Search Results
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East German postage stamp commemorating science and socialism
- Undated
Stamp from the "Builders of Socialism" series, depicting aspects of chemistry and related sciences.
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Test Tube Rack
- Undated
Rectangular wooden apparatus for holding fifteen test tubes upright. Heavy tape has been attached to all four sides.
- Subject MacDiarmid, Alan G., 1927-2007, Test tubes
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Robert Lineberger with unidentified man
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Lineberger is the man on the right. The instrument they are examining is unidentified.
- Photographer Frey Photos
- Subject Scientific apparatus and instruments, Beckman Instruments, Inc.
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Beckman Instruments stock being traded on the New York Stock Exchange
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Unidentified men trading stock on the floor of the New York Stock Exchange.
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Beckman Model 7160 Eput Meter
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EPUT (Events Per Unit Time) meters measure changes in voltage during a specified amount of time, and so can be used to count or measure any event that can be represented as a voltage change or pulse. This includes, but…
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Unidentified person using a Spinco Physiological Gas Analyzer
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It is unclear from this photograph whether this is a Model 150 or 160.
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Beckman Model J pH Meter
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Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…
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Arnold O. Beckman and an unidentified man with Beckman Instruments products
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Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career manufacturing scientific and medical instruments with National Technical Laboratories,…
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Portrait of Arnold O. Beckman (1900-2004)
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Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career manufacturing scientific and medical instruments with National Technical Laboratories,…
- Subject Scientists--Portraits, Beckman, Arnold O.
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Portrait of Arnold O. Beckman (1900-2004)
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Dr. Arnold O. Beckman (1900-2004) is pictured here with his pH meter, which he invented in 1934 and which became the first commercially successful electric pH meter. Thus began a long career manufacturing scientific and…
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Disc Molecular Models
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Rectangular grey cardboard box with white writing and colored disks on sides; box contains a cardboard separator that divides the inside into four compartments and an instruction booklet; the compartments contain a…
- Manufacturer W. A. Benjamin, Inc
- Subject Molecules--Models
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Harshaw Crystal Model Kit
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Blue cardboard box containing three compartments; two compartments hold a number of black and white stone marbles; third compartment holds four brass rods, numerous glass spacers, and sheets of thin paper; box also…
- Manufacturer Harshaw Scientific, Division of the Harshaw Chemical Company
- Subject Molecules--Models
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2 items
Wilbur I. Kaye
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Wilbur Kaye was hired by Beckman Instruments in 1956 as the Director of Research, Scientific Instruments Division. While there, he modified the Beckman DU Spectrophotometer design, producing the DK Spectrophotometer…
- Photographer Frey Photos
- Subject Scientists--Portraits, Chemists
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Beckman Model N pH Meter
- Undated
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…
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Handheld Bakelite No. 7 Microphone
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Black Bakelite handle with a large button on its side; product information engraved in white on front of handle; circular grated area has a raised enclosure; four copper wires coated in brown synthetic fiber emanate…
- Subject Plastics, Bakelite, Plastics industry and trade
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Bakelite Molecular Orbital Model
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Black Bakelite cylindrical base with four steel arms giving it support; red Bakelite circles are attached to the end of each arm; the model itself is attached with a steel arm that protrudes upward from the base; model…
- Subject Molecules--Models, Molecular orbitals, Bakelite
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Bakelite Molecular Orbital Model
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Black Bakelite cylindrical base with four steel arms giving it support; red Bakelite circles are attached to the end of each arm; the model itself is attached with a steel arm that protrudes upward from the base; model…
- Subject Molecules--Models, Molecular orbitals, Bakelite
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Bakelite Molecular Orbital Model
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Black Bakelite cylindrical base with four steel arms giving it support; red Bakelite circles are attached to the end of each arm; the model itself is attached with a steel arm that protrudes upward from the base; model…
- Subject Molecules--Models, Molecular orbitals, Bakelite
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Collection of 13 Aramith Bakelite Billiard Balls (Incomplete Set)
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Collection of 13 Aramith Bakelite billiard balls. Some billiard numbers are missing or duplicated.
Green cardboard box with removable top; interior of box bottom has a white plastic insert with round indentations for…
- Manufacturer Saluc S.A.
- Subject Billiards, Bakelite, Plastics industry and trade