Schenectady NY - Living organism and volatile specimens are studied in detail by means of an enlarged photograph taken by a laboratory Photomicrographic device. Living and volatile matter cannot be viewed through an electron microscope because of the heat generated during operation and because specimens are viewed in a vacuum. Mrs. Helen Allen, GE Research laboratory microscopist, prepares to make a photomicrograph of liquid resin, used in plastic. Most exposure in this type of photography are held for 10 to 15 seconds.
General Electric Company1905-05-04