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Flame propogation in gas engines photographed. Washington, D.C., Aug. 26. A study of the mechanism of the flame propogation in the cylinder of a internal combustion engine is being made at the U.S. Bureau of Standards for the National Advisory Committee for Aeronautics. A secial bomb made of steel, shown in the foreground, and designed to withstand pressures up to 500 lbs. to the square inch is used to show the progress of the flame and the rise in pressure which may be recorded photographically during the gas explosions under carefully controlled conditions. The camera, where the recordings are made, is in front of Dr. Ernest F. Flock of the Bureau of Standards, carries its film on a drum which may be revolved up to 4,000 revolutions per minute, this camera also records a neon light flashing at a thousandth of a second. The independent effects of pressure, temperature and charge composition upon flame speed and explosion ratio may be made with this equipment, 8/26/37

Flame propogation in gas engines photographed. Washington, D.C., Aug. ...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Government experts discover "perpetual" electrical current. Washington, D.C., March 10. Dr. F.B. Silsbee (left) and Dr. F.G. Brickwedge, of the Bureau of Standards, have just concluded experiments which have proved that an electric current, cut off from its original source, will flow eternally round and round a coiled tin wire circuit when the wire is subjected to 450-degree-below-zero temperature. The tests were made in a new effort to understand what electricity really is, 3/10/38

Government experts discover "perpetual" electrical current. Washington...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. The rapid tempo of expansion necessary to meet the ever-mounting needs of the national defense production program. In the left foreground a newly completed electric melting furnace is already in operation as a construction crew puts the finishing touches on the furnaces beyond it. In the background additional plant structure is still being built. Electric melting furnaces provide faster melting of the steel bath and more precise control of temperature which is necessary in the processing of high quality alloy steels

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Converting scrap iron and steel into high quality alloy steel. A workman adds alloying materials to the bath of molten steel in one of the thirty-five ton electric arc furnaces. These furnaces give faster heating and more accurate temperature control than do open hearth furnaces

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water from a thirty-five ton electric furnace. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water ...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

Checking temperature of milk being pasteurized. Antigo, Wisconsin

Checking temperature of milk being pasteurized. Antigo, Wisconsin

Picryl description: Public domain image of a factory worker, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions. show less

Closing the cover of the mold. Entirely automatic, the "watch-case" mold is closed by pushing a button, which starts several operations. First the airbag is filled with live steam which circulates during the entire process; next an automatic timer sets itself for the proper length of time and temperature; next pressure is exerted to squeeze the tire into the mold pattern. Firestone (General) Tires, Akron, Ohio

Closing the cover of the mold. Entirely automatic, the "watch-case" mo...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

Production. Veneer for aircraft and other war essentials. Veneer for combat planes. In the "half-round method," a half log, after being heated in water to the proper temperature, is bolted on a stay log and revolved against a stationary knife. The sheets, as they fall from the knife, are stacked in proper sequence just as they were in the log. Louisville, Kentucky

Production. Veneer for aircraft and other war essentials. Veneer for c...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Bantam, Connecticut. Defense homes. The heating unit is in the kitchen of Fred Heath's four-room apartment in the new federally-financed homes for eighty families just a few minutes from the Warren McArthur factory in Bantam. The well-insulated coal fire puts steam in the radiators and provides the heat for cooking. The tenants are well-pleased although on several nights when the temperature dropped to ten degrees below zero they were forced to replenish the fuel every two or three hours. That cigarette Fred Heath holds is not tailor-made, by the way--he likes to roll his own

Bantam, Connecticut. Defense homes. The heating unit is in the kitchen...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.

Bureau of Mines, low temperature laboratories

Bureau of Mines, low temperature laboratories

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Corn, dried up and lying in the field. The temperature was over one hundred degrees. Between Dallas and Waco, Texas

Corn, dried up and lying in the field. The temperature was over one hu...

Public domain photograph - historical image of Texas, United States, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Painting with metal colours

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Spanish-American woman testing temperature of earthen oven by determining length of time required to scorch wool, Taos County, New Mexico

Spanish-American woman testing temperature of earthen oven by determin...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Fence on Cruzen Ranch. Valley County, Idaho. AAA (Agricultural Adjustment Administration) has painted out this fence as being an outstanding type for ranch use. It keeps out predators (wolves, etc.), the wire is stapled loosely to allow for expansion and contraction caused by temperature changes

Fence on Cruzen Ranch. Valley County, Idaho. AAA (Agricultural Adjustm...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

Production. Mercury. Rotary kiln in a mercury extraction plant at New Idria, California, in which ore is introduced to a temperature of 1,200 degrees Fahrenheit. This heat drives off the sulphur and vaporizes the mercury which is later condensed. Triple- distilled mercury is produced at the plant by the New Idria Quicksilver Mining Company from cinnabar, an ore containing sulfur and mercury, mined at a number of workings near the plant

Production. Mercury. Rotary kiln in a mercury extraction plant at New ...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Arkansas-Texas state line to Gurdon, Arkansas. War emergency pipeline from Longview, Texas to Norris City, Illinois. Pot firer and helpers. They prepare the hot asphalt paint and keep it at the right temperature

Arkansas-Texas state line to Gurdon, Arkansas. War emergency pipeline ...

Picryl description: Public domain image of an 18th-19th century military conflict, armed forces, infantry, militia, free to use, no copyright restrictions.

Production. Plywood for aircraft and boats. Making plywood panels for combat planes and boats. A huge hydraulic press operating at high temperature and a pressure of 250 pounds per square inch attaches glue-surfaced veneer sheets to lumber-core panels to make high-grade plywood for Army and Navy uses. Louisville, Kentucky

Production. Plywood for aircraft and boats. Making plywood panels for ...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Fatherless migratory family camped behind gas station. The mother is trying to support three boys by picking pears. Just arrived from Minnesota, she used to work in a restaurant there. Oldest boy, age ten, helped carry ladder from tree to tree Photograph made at end of day (temperature 106 degrees) when she returned from orchard. Yakima Valley, Washington

Fatherless migratory family camped behind gas station. The mother is t...

Public domain photograph - United States during 1930s Great Depression, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. A heated ingot of steel is removed from the soaking pit. In this pit ingots are thoroughly heated to the extremely high temperature required for conversion into slabs, billets or sheet bars for further conversion

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Production. Plywood for aircraft and boats. Making plywood panels for combat planes and boats. A huge hydraulic press operating at high temperature and a pressure of 250 pounds per square inch attaches glue-surfaced veneer sheets to lumber-core panels to make high-grade plywood for Army and Navy uses. Louisville, Kentucky

Production. Plywood for aircraft and boats. Making plywood panels for ...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Hanna furnaces of the Great Lakes Steel Corporation. Detroit, Michigan. Coke oven pusher. A long square pusher is inserted through the entire section of the coke oven, thus pushing the coke out to the other side into the freight car. This coke oven is a modern by-product oven. All the gases and vapors liberated from the coal in the cooking processes are recovered. The coal is heated from fifteen to twenty hours in a temperature of about 1700 degrees F. The gases and vapors released by the coal are condensed for the recovery of such by-products as tar, benzol, and gas. At the end of the coking period, the incandescent coke mass is pushed into the quenching car

Hanna furnaces of the Great Lakes Steel Corporation. Detroit, Michigan...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Melbourne, Australia. United States Army hospital. Patient receiving treatment in new fever machine which keeps temperature at 107 degrees (108 degrees is fatal). Note ice in basin and fan to cool head

Melbourne, Australia. United States Army hospital. Patient receiving t...

Picryl description: Public domain photograph of costume accessory, free to use, no copyright restrictions image.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. High frequency radio receiver recording signals from small radio transmitter attached to radiosonde balloon aloft. The signals reveal temperature, humidity and pressure at various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Michael Murphy showing gauges, micrometers and other standardized and temperature controlled measuring devices used as part of quality control at Watson machine.

Michael Murphy showing gauges, micrometers and other standardized and ...

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 5, 1994.

Outdoor pool at Hot Springs State Park, a state-owned, public-recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 degrees Fahrenheit. Park employees see to it that the temperature in areas available to the public is quite a bit lower, but still a few notches above tepid

Outdoor pool at Hot Springs State Park, a state-owned, public-recreati...

Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograph... More

Indoor thermal pool at Hot Springs State Park, a state-owned, public-recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 degrees Fahrenheit. Park employees see to it that the temperature in areas available to the public is quite a bit lower, but still a few notches above tepid

Indoor thermal pool at Hot Springs State Park, a state-owned, public-r...

Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograph... More

Electric Institute of Washington. Room temperature reduced 10 degrees display III

Electric Institute of Washington. Room temperature reduced 10 degrees ...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Show window of finished work

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Cardinal "don't" for housekeepers: don't put hot food into the refrigerator. Allow cooked foods to cool to room temperature before placing in the refrigerator

Cardinal "don't" for housekeepers: don't put hot food into the refrige...

Public domain photograph of kitchen, free to use, no copyright restrictions image - Picryl description

Turlock, California. Checking temperature of drying tunnel in dehydrating plant

Turlock, California. Checking temperature of drying tunnel in dehydrat...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

General Chemical Co., Morristown, New Jersey. Low temperature distillation

General Chemical Co., Morristown, New Jersey. Low temperature distilla...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Michael Murphy showing gauges, micrometers and other standardized and temperature controlled measuring devices used as part of quality control at Watson machine.

Michael Murphy showing gauges, micrometers and other standardized and ...

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 5, 1994.

Entrance to the Star Plunge Hot Mineral Pool at Hot Springs State Park, a state-owned, public-recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 degrees Fahrenheit. Outdoor pool at Hot Springs State Park, a state-owned, public-recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 degrees Fahrenheit. Park employees see to it that the temperature in areas available to the public is quite a bit lower, but still a few notches above tepid

Entrance to the Star Plunge Hot Mineral Pool at Hot Springs State Park...

Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograph... More

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Thirty-five ton electric arc melting furnace in operation. These furnaces convert scrap iron and steel into high quality steel alloys. This type of furnace gives much faster heating and permits the accurate temperature control so necessary in the processing of the high quality steels. The alloying elements are being added to the bath of molten steel

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water from a thirty-five ton electric furnace. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive. The furnace is tiled for the pourings. The flying sparks indicate the fluidity of the steel

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Thermostat recording temperature in the pasteurizing unit at the Burlington cooperative milk bottling plant. Burlington, Vermont

Thermostat recording temperature in the pasteurizing unit at the Burli...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Workmen checking the temperature of magnesium alloy and "salting" the mixture (i.e., adding chemical necessary to the particular alloy combination at hand) before pouring it into the moulds. Ford River Rouge Foundry

Workmen checking the temperature of magnesium alloy and "salting" the ...

Public domain photograph of the United States military and military-industrial complex before World War Two, 1930s, free to use, no copyright restrictions image - Picryl description

Aluminum casting. To make certain that aluminum is being treated in exact accordance with specifications, this worker sets instruments to the correct temperature on heat treating controls of unit. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. To make certain that aluminum is being treated in ex...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Trampas, New Mexico. The temperature in Trampas drops way below zero in winter, and all social life takes place around the fire. An evening scene in the home of Juan Lopez, the majordomo (mayor)

Trampas, New Mexico. The temperature in Trampas drops way below zero i...

Picryl description: Public domain image of a residential home interior, living room, fireplace, 19th-20th century architecture, free to use, no copyright restrictions.

San Bernardino, California. Cars being precooled at the ice plant. Air at a temperature of twenty degrees Fahrenheit is blown through the cars for twenty minutes in one direction, then in the other. Shippers specify the number of hours precooling required for their product

San Bernardino, California. Cars being precooled at the ice plant. Air...

Public domain photograph of California industry, no copyright restrictions image - Picryl description

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientists of the National Bureau of Standards today conducted a test of the new radiometeorograph, a device attached to parachute and balloon and sent into the skies to radio back signals giving the pressure, temperature and humidity of the upper air. Preparing the balloon for the ascension are Dr. L.V. Astin, (left) of the Bureau's Electrical Division, and Dr. L.F. Curtiss, head of the Radium Division. The balloon carries the instrument as high as 50,000 or 60,000 feet. 9 to 11 miles high. Today's test was conducted for the U.S. Weather Bureau. 9/13/37

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientis...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Potato storage barn on a field near Caribou, Maine. The earth is built up around the sides to provide a more even temperature throughout the year

Potato storage barn on a field near Caribou, Maine. The earth is built...

Public domain photograph of life in the United States in the 1930s, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Thirty-five ton electric arc melting furnace in operation. These furnaces convert scrap iron and steel into high quality steel alloys. This type of furnace gives much faster heating and permits the accurate temperature control so necessary in the processing of the high quality steels. The alloying elements are being added to the bath of molten steel

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of building construction site, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. "Pot boilers" of a Southern tin smelter in which the pure metal is kept at a temperature of about 750 degrees Fahrenheit until it is poured into molds. The plant, which processes South American ore is the finest and the most modern in the world

Production. Tin smelting. "Pot boilers" of a Southern tin smelter in w...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Conversion. Beverage containers to aviation oxygen cylinders. Once the two-half cylinders are joined together into a complete shatterproof high altitude flying oxygen cylinder on the production line of a huge rubber factory now producing metal essential for the Army, all traces of inside weld scale must be removed to prevent contamination of oxygen. In this process, a special chemical solution is drawn through the cylinder at controlled temperature and all foreign matter is removed. Firestone, Akron, Ohio

Conversion. Beverage containers to aviation oxygen cylinders. Once the...

Picryl description: Public domain image of people, meeting, eating, drinking, food, beverage, 1930s, free to use, no copyright restrictions.

Washington, D.C. Engineer checking on the temperature in a vegetable storage room at District grocery store warehouse

Washington, D.C. Engineer checking on the temperature in a vegetable s...

Picryl description: Public domain photograph of chicken, poultry, agriculture, farm animals, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. This high frequency radio transmitter is small, but very effective. It is attached to a large balloon and transmitts signals which reveal temperature, humidity and pressure

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Gauges, micrometers and other standardized and temperature controlled measuring devices used as part of quality control at Watson machine.

Gauges, micrometers and other standardized and temperature controlled ...

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 5, 1994.

[Page of text with illustration of a "thermoscope" or thermometer without scale]

[Page of text with illustration of a "thermoscope" or thermometer with...

Illus. in: Sphlaera mvndi, .... Mvtinæ : Ex typographia Andreæ, & Hieronymi Cassiani, 1653. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. ... More

Hams. Placing the ham in the incubator, Mr. Carroll sets the heat at the required temperature for the aging

Hams. Placing the ham in the incubator, Mr. Carroll sets the heat at t...

Picryl description: Public domain photograph of chicken, poultry, agriculture, farm animals, free to use, no copyright restrictions.

Air conditioned hen house is latest. Washington, D.C., Aug. 9. Biddy increases the production of eggs in an air-conditioned hen house, U.S. Department of Agriculture experts have discovered after extensive experiments. The first temperature controlled maternity ward for hens has just been put into operation at the governmental experimental farm here. The hens have voiced their approval by laying more frequently; also a more uniform egg. R.B. Nestler poultry expert, is pictured as he removes the eggs from the automatic chute in the new room. Note the air conditioning apparatus on the ceiling, 8/9/38

Air conditioned hen house is latest. Washington, D.C., Aug. 9. Biddy i...

Public domain photograph of Washington DC, 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Exhibit of finished work

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Young migrant worker brings his hops to weigh scales. From five a.m. until noon, when photograph was made, he had picked eighty pounds, which equals eighty cents. Temperature 105 degrees. Oregon, Polk County, near Independence

Young migrant worker brings his hops to weigh scales. From five a.m. u...

Picryl description: Public domain image of a farm, farmer, agriculture, early 20th century, free to use, no copyright restrictions.

Molten metal from blast furnaces arrives at the open hearth foundry where it is placed in a 600 ton mixing furnace, which maintains a temperature of 2100 degrees fahrenheit. The mixing furnace acts as a sort of thermos bottle, or ore storage tank. A worker is shown here preparing an open hearth furnace for charging

Molten metal from blast furnaces arrives at the open hearth foundry wh...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Daily temperature readings are seen on Venetian Causeway between Miami and Miami Beach, Florida

Daily temperature readings are seen on Venetian Causeway between Miami...

Public domain photograph - historical image of Florida, United States, free to use, no copyright restrictions image - Picryl description

Worker charging heat treating oven for low temperature precipitation treatment of aluminum pistons to be used in U.S. Army jeeps. Aluminum Industries

Worker charging heat treating oven for low temperature precipitation t...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Michael Murphy showing gauges, micrometers and other standardized and temperature controlled measuring devices used as part of quality control at Watson machine.

Michael Murphy showing gauges, micrometers and other standardized and ...

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 5, 1994.

[Italian thermoscope and Dutch thermometer]

[Italian thermoscope and Dutch thermometer]

Illus. in: Mathematical recreations, .... [London] : Printed for W. Leake, 1653. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. : Library o... More

[Illustration demonstrating that the efficiency of a power cycle depends on the temperature in an engine]

[Illustration demonstrating that the efficiency of a power cycle depen...

Illus. in: Reflections on the motive power of heat and on machines fitted to develop that power. New York : J. Wiley & sons, 1890. Published in: The tradition of technology : Landmarks of Western technology ..... More

Electric Institute of Washington. Room temperature reduced 10 degrees display II

Electric Institute of Washington. Room temperature reduced 10 degrees ...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

#4--Miss Ann Turner, getting the proper temperature for milk

#4--Miss Ann Turner, getting the proper temperature for milk

A woman is opening a refrigerator with milk in it. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Sweeping hot coals from outdoor earthen oven after it has been heated to proper temperature to bake bread, Taos County, New Mexico

Sweeping hot coals from outdoor earthen oven after it has been heated ...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. Cheese factory. Int[erior]. Cheese mixture submitted to high steam temperature (closed apparatus)

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Potato storage barn on a field near Caribou, Maine. The earth is built up around the sides to provide a more even temperature throughout the year

Potato storage barn on a field near Caribou, Maine. The earth is built...

Public domain photograph of life in the United States in the 1930s, free to use, no copyright restrictions image - Picryl description

Rubber reclamation. Reclaiming rubber from scrap tires. An attendant at a large Midwest xylos process plant checks temperature on a continuous belt dryer which removes every trace of water. Recovery of rubber from old casings is based on dissolving and washing away all tire fibers and processing the resultant rubber material. Firestone

Rubber reclamation. Reclaiming rubber from scrap tires. An attendant a...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Great Falls, Montana. Anaconda Wire and Cable Company. Wire bars are placed on a conveyor which pushes them gradually into the heating furnace where they are brought up to correct temperature for rolling into rods

Great Falls, Montana. Anaconda Wire and Cable Company. Wire bars are p...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Science and research. Studies of non-coking coals. Research workers at the Golden, Colorado field station of the U.S. Bureau of Mines at a fifty-pound coke oven, which is used to determine if an unknown coal has coking properties. Coal is tested at various temperature levels to determine its adaptability to coking. Left to right: Ralph Maugham, labor foreman; William Landers, assistant chemical engineer; V.F. Parry, supervising engineer. Mr. Landers is shown using an instrument which measures temperature by the color of the heated mass. The bureau is carrying on a project to determine the suitability of western coal for coke operations with the view to supplying war needs of the expanding iron and steel industry of the Western states

Science and research. Studies of non-coking coals. Research workers at...

Picryl description: Public domain image of people, meeting, eating, drinking, food, beverage, 1930s, free to use, no copyright restrictions.

Aluminum casting. One of the many operations essential to production of aluminum articles for the Army and Air Forces: lowering basket into quench tank from high temperature heat treating solution furnace. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. One of the many operations essential to production o...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Conversion. Copper and brass processing. A mechanical feeder is here shown running billets of brass into an electric furnace, where they will be heated at a high temperature. Then the heated billets will be pushed with tremendous force through the die of an extrusion machine to form rods, tubes, angles or other shapes. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. A mechanical feeder is here s...

Picryl description: Public domain photograph of lumber, lumberjack workers, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. High frequency radio receiver recording signals from small radio transmitter attached to radios on a balloon aloft. The signals reveal temperature, humidity and pressure at various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Washington, D.C. The U.S. Weather Bureau station at the National Airport. Surface temperature readings being recorded by an observer at a Weather Bureau instrument shelter

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Michael Murphy showing gauges, micrometers and other standardized and temperature controlled measuring devices used as part of quality control at Watson machine.

Michael Murphy showing gauges, micrometers and other standardized and ...

Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description

An account of Virginia : its scituation, temperature, productions, inhabitants and their manner of planting and ordering tobacco &c. /

An account of Virginia : its scituation, temperature, productions, inh...

"Two hundred & fifty copies ... The type used is contemporary with the tract, being that cast under the direction of Dr. John Fell, who was bishop of Oxford in 1675, and presented by him to the University"--Ver... More

[Examples of Florentine thermometers and a hygrometer]

[Examples of Florentine thermometers and a hygrometer]

Illus. in: Saggi di naturali esperienze / fatte nell'Accademia .... In Firenze : Per Giuseppe Cocchini all'Insegna della Stella, 1666 [i.e. 1667]. Published in: The tradition of technology : Landmarks of Weste... More

Government scientist cools water to -6ʺ without freezing it. Washington, D.C., Aug. 9. The belief that water freezes at 32 degrees fahrenheit has been blasted by Dr. N. Ernest Dorsey, scientist of the National Bureau of Standards. Neither does all water freeze at the same temperature. These discoveries have been made by Dr. Dorsey after experimenting with 37 specimens of water taken from lakes, canals, and other sources. He has cooled water until it was minus 6 degrees fahrenheit that is, 38 degrees colder that the so called freezing point of 32 degrees. Yet it remained liquid, 8/9/38

Government scientist cools water to -6ʺ without freezing it. Washingto...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Scotch machine, Washington, D.C., September 8. This machine, exhibited at the World Power Conference which is being held here, is devised so as to use every inch of matter contained in coal. The coal is put in the retort and heated to a temperature of 1832 degrees. From the smoke and gas, Tar, Ammonium Sulphite, sulphur, light oils and gas are derived and from the tar, medicines, aromatic oils, perfumes, dyes, and acids are derived. From the light oils, motor fuel is obtained. In short: this machine wastes nothing at all

Scotch machine, Washington, D.C., September 8. This machine, exhibited...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Spanish-American woman testing temperature of earthen oven by determining length of time required to scorch wool, Taos County, New Mexico

Spanish-American woman testing temperature of earthen oven by determin...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Flash-cooking process used in preparing grapefruit juice for canning. Temperature is carried to 180 degrees, and is attained in a few seconds, thus retaining much of the original flavor. Weslaco, Texas

Flash-cooking process used in preparing grapefruit juice for canning. ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. A heated ingot of steel is removed from the soaking pit. In this pit ingots are thoroughly heated to the extremely high temperature required for conversion into slabs, billets or sheet bars for further conversion

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Production. Veneer for aircraft and other war essentials. Veneer for combat planes. In the "half-round method," a half log, after being heated in water to the proper temperature, is bolted on a stay log and revolved against a stationary knife. The sheets, as they fall from the knife, are stacked in proper sequence just as they were in the log. Louisville, Kentucky

Production. Veneer for aircraft and other war essentials. Veneer for c...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Washington, D.C. District grocery store warehouse on 4th Street S.W. Bananas are brought into the warehouse unripe, are put into a special room, and kept at a certain temperature to rippen. Steam, seen in the background, is turned on periodically to keep the air moist. This man is cutting into them with a knife, testing the ripeness of the bananas

Washington, D.C. District grocery store warehouse on 4th Street S.W. B...

Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. This high frequency radio transmitter is small, but very effective. It is attached to a large balloon and transmitts signals which reveal temperature, humidity and pressure as it ascends to various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

A young prisoner at San Quentin has his temperature and pulse recorded before giving blood to the Red Cross blood bank

A young prisoner at San Quentin has his temperature and pulse recorded...

Public domain photograph of pharmacy, convenience store, free to use, no copyright restrictions image - Picryl description

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood...

Significance: Building No. 130 was designed and used as a ultra-high temperature testing facility for the complex but it was also used for a number of other functions over the course of its existence. It was b... More

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood...

Significance: Building No. 130 was designed and used as a ultra-high temperature testing facility for the complex but it was also used for a number of other functions over the course of its existence. It was b... More

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood...

Significance: Building No. 130 was designed and used as a ultra-high temperature testing facility for the complex but it was also used for a number of other functions over the course of its existence. It was b... More

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

NASA Industrial Plant, Ultra-High Temperature Facility, 12214 Lakewood...

Significance: Building No. 130 was designed and used as a ultra-high temperature testing facility for the complex but it was also used for a number of other functions over the course of its existence. It was b... More

[Man on ship comparing temperature of the surface of the sea and the air in various parts of the world] / E. Gulland ; Pearson, sc.

[Man on ship comparing temperature of the surface of the sea and the a...

Illus. in: Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-1876 ..., narrative, vol. 1, second part. Longmans & Co. ..., 1885, diagram 22, p. 1003. Reference copy also... More

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Rishon le Zion. The brewery. Low temperature aluminum containers

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Painting with metal colours

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Tracks for scout cars and other Army vehicles go through a curing process in an Ohio tire plant. The hydraulic press in which this important operation is performed assures uniform cure under automatically regulated temperature. Goodrich, Akron, Ohio

Tracks for scout cars and other Army vehicles go through a curing proc...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Ingots of "strong alloy" aluminum go through a rolling mill at a temperature of 800 degrees Fahrenheit

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Ingots of "str...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Eleven Mile Corner, Arizona. Cairns General Hospital. FSA (Farm Security Administration) farm workers' community. Nurse taking temperature of a patient

Eleven Mile Corner, Arizona. Cairns General Hospital. FSA (Farm Securi...

Picryl description: Public domain image of a woman, nurse, caring, hospital, free to use, no copyright restrictions.

Aluminum casting. A new development in the production of war materials involves use of magnesium. Here a young worker in a large Midwest foundry takes temperature readings of molten magnesium alloy through the protective crust. At the same time he is sprinkling flux to prevent burning at the hole in the crust after removal of the thermocouple. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. A new development in the production of war materials...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Washington, D.C. Engineer Graham is a full-time employee at the District grocery store, on call at all hours of the day and night. He is responsible for air conditioning and keeping the storerooms and cold room at the right temperature

Washington, D.C. Engineer Graham is a full-time employee at the Distri...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

San Bernardino, California. Cars being precooled at the ice plant. Air at a temperature of twenty degrees Fahrenheit is blown through the cars for twenty minutes in one direction, then in the other. Shippers specify the number of hours precooling required for their product

San Bernardino, California. Cars being precooled at the ice plant. Air...

Picryl description: Public domain photograph of a road works, construction, excavation, free to use, no copyright restrictions.

Thermal pool at Hot Springs State Park, a state-owned, public-recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 degrees Fahrenheit. Park employees see to it that the temperature in areas available to the public is quite a bit lower, but still a few notches above tepid

Thermal pool at Hot Springs State Park, a state-owned, public-recreati...

Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograph... More

Atlantic Ocean. Meridional temperature section. Falkland Islands to the parallel of 35.40'.S. / engraved by Malby & Sons.

Atlantic Ocean. Meridional temperature section. Falkland Islands to th...

Vertical scale of fathoms and horizontal scale of degrees of latitude. Illus. in: Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-1876 ..., narrative, vol. 1, second pa... More

Weighing box of turkeys to be loaded into freight car at cold storage plant. Brownwood, Texas. Sheepskin coat is necessary because of low temperature in cold storage plant

Weighing box of turkeys to be loaded into freight car at cold storage ...

Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description

Migratory boy, aged eleven, and his grandmother work side by side picking hops. Started work at five a.m. Photograph made at noon. Temperature 105 degrees. Oregon, Polk County, near Independence. See general caption number 45

Migratory boy, aged eleven, and his grandmother work side by side pick...

Picryl description: Public domain image of a farmer, 1930s, 20th-century dust bowl era, free to use, no copyright restrictions.

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