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Add record depth reached by Navy divers. E.B. Crosby, Boatswain's Mate, 1st Class, U.S.N., rebreathing into a special apparatus which measures the amount of helium gas absorbed by body after a dive into the tank at Washington Navy Yard,. 8/9/38

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Add record depth reached by Navy divers. E.B. Crosby, Boatswain's Mate, 1st Class, U.S.N., rebreathing into a special apparatus which measures the amount of helium gas absorbed by body after a dive into the tank at Washington Navy Yard,. 8938

San Francisco Fire Department, Pumping Station No. 2, Van Ness Avenue at Bay, San Francisco, San Francisco County, CA

Dipping the front parcels of surgical dressings in parafine to make them proof against dampness and gas. The "front parcel" is a specialty of the American Red Cross workroom Rue St. Didier Paris. It contains the first dressing that the wounded soldier gets when he comes from the battleground to the field dressing station

[Man with scientific instruments]

Man with scientific instruments

Government discovers method to preserve film. Scratch resistance, film, particulary the emulsion side, may become damaged through scratching. D. Levinsky of the Bureau is using an instrument which tests the resitance of a film by measuring the width of a scratch produced by a diamond point under a given load. Another method is to put a piece of film in a bottle of sand, revolve the bottle a certain number of times, then measure the haxiness developed. Many commercial treatments designed to increase the hardness of the emulsion have been investigated, 7838

Add record depth reached by Navy divers. E.B. Crosby, Boatswain's Mate, 1st Class, U.S.N., rebreathing into a special apparatus which measures the amount of helium gas absorbed by body after a dive into the tank at Washington Navy Yard,. 8/9/38

description

Summary

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

date_range

Date

1938

person

Contributors

Harris & Ewing, photographer

place

Location

Washington, District of Columbia, United States, 38.90719, -77.03687

Google Map of 38.9071923, -77.03687070000001

create

Source

Library of Congress

link

Link

http://www.loc.gov/

copyright

Copyright info

No known restrictions on publication.