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Date 1945 to 1949 Remove constraint Date: <span class='from'>1945</span> to <span class='to'>1949</span>

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    • 1949 (Original design)
    • circa 1957 (Date attributed to slide)

    Top and perspective views of a graphic representation of the periodic table of chemical elements in the style of a helix wound on one cylinder with interrupted short and medium periods. This type of table was originated…

    • circa 1957 (Date attributed to slide)
    • 1948 (Original design)

    Graphic representation of the periodic table of chemical elements designed as a left-side electronic configuration series table "stretched" in a vertical direction. This table was originated by David T. Gibson in 1948…

    • circa 1957 (Date attributed to slide)
    • 1949 (Original design)

    Graphic representation of the periodic table of chemical elements designed as a series table with sixteen groups. This table was originated by G.M. Murashov in 1949 and and classified by Mazurs as Type IC3-2a in his…

    • 1937 – 1945 (Original design)
    • circa 1957 (Date attributed to slide)

    Graphic representation of the periodic table of chemical elements constructed as a triangle. This type of table was originated by Henry A. Wagner and Harold Simmons Booth in 1945 after an incomplete drawing by Emil V.…

    • 1946 – 1955

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1948 – 1954

    Advertising brochure for Ac'cent, a pure mono sodium glutamate (MSG) food additive product manufactured by the Amino Products Division of the International Minerals & Chemical Corporation.

    • 1910 – 1950

    Small, shallow, rectangular tin box containing medicine pills. Label on front of tin has yellow background with the company name in red. Name of medicine is printed in yellow on brown background on front of tin. Tin…

    • 1950
    • 1940
    • 1934 – 1935
    • 1946
    • Undated
    • 1949

    A Pasadena garage was the first home of the National Postal Meter Company, founded by Arnold Beckman in 1934. The company soon became National Technical Laboratories, with a focus on pH meters. In 1935, the company…

    • 1900 – 1950

    This 20th-century color lithograph reproduction of an early-19th-century engraving shows a pink and white striped balloon rising above a pastoral landscape. In the balloon basket are two small figures. The campus of…

    • 1940s

    General view of two unidentified employees working on the nose of a Douglas A-20 attack bomber aircraft prior to the installation Plexiglas windshield panels. This photograph was likely taken at the Rohm and Haas…

    • 1940s

    General view of an unidentified male employee polishing a curved panel of Plexiglas designed for use on the nose of an aircraft attack bomber. Several finished panels are visible in the background. Per notations…

    • 1940s

    General view of two unidentified employees making adjustments to a Douglas A-20 attack bomber in production at the Rohm and Haas Company plant located in Bristol, Pennsylvania. Several attack bombers, awaiting…

    • 1940s

    General view of an unidentified employee fitting a Plexiglas windshield panel onto the nose enclosure of a Douglas A-20 attack bomber. This photograph was likely taken at the Rohm and Haas Company plant located in…

    • 1940s

    General view of an unidentified employee using a band saw to trim a curved Plexiglas panel designed for use as an aircraft windshield. This photograph was likely taken at the Rohm and Haas Company plant located in…

    • 1940s

    General view of an unidentified female employee polishing a curved panel of Plexiglas designed for use as an aircraft windshield. This photograph was likely taken at the Rohm and Haas Company plant located in Bristol,…

    • 1940s

    General view of an unidentified employee using a router to smooth the edge of a curved Plexiglas panel designed for use as an aircraft windshield. Per notations accompanying the photograph, the edges of the panels are…

    • 1940s

    General view of several unidentified employees installing Plexiglass panels on the nose of a Douglas A-20 attack bomber. Per notations accompanying the photograph, the two halves that form the nose of the bomber are…

    • 1949-Dec

    Newsletter issued by the Vanadium Corporation of America with articles entitled "Uranium in the Colorado Plateau Area," "Bus Springs: Wellsprings of Good Will," "The Vanadium Minerals — Part II — Mineral Sources of…

    • 1940 – 1949

    Wooden box painted red with white speckled paint design; case opens on a hinge to reveal nine (9) test tubes on left containing: sodium iodide solution, bleaching powder, sodium salicylate, cobalt chloride, ferric…

    • 1940s

    This glass dumbbell was key to the functioning of the Pauling Oxygen Meter, although production was tricky and originally required a human glass blower to shape the hollow ends of the tiny dumbbell with puffs of breath.…

    • 1940s

    An unidentified man with a tattoo on his forearm has removed the case of a Model B DU Spectrophotometer in order to demonstrate its functions to three other (also unidentified) men.

    The first Beckman Instruments DU…

    • 1940s

    Developed from a Linus Pauling design during WWII, the technology behind Beckman Instruments’ oxygen analyzers ended up doing such diverse jobs as monitoring astronauts’ respiration, maintaining packaged food safety,…

    • 1940s

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1940s

    This advertisement for the Model G pH meter highlights the different electrodes that could be used with it. The Model G was Beckman Instruments's first commercial pH meter.

    Arnold Beckman invented his first pH meter in…

    • Bulletin 206
    • circa 1949

    The Pocket Dosimeter was designed to be a portable radiation monitoring system, carried by people to protect themselves against gamma and x-ray exposure.