Search Results
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Calcite
- Undated
Calcite is one of the most widely used minerals. It is primarily composed of the chemical compound calcium carbonate. Calcite is also often used in demonstrations of double refraction, in which light is split into two…
- Subject Precious stones, Minerals, Calcite
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Fluorite
- Undated
Fluorite (also called fluorspar) is the crystal form of the inorganic compound calcium fluoride. The term "fluorescence," a type of luminescence by a substance that has absorbed light or radiation, is derived from this…
- Subject Precious stones, Minerals, Fluorspar
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Barite
- Undated
Barium (atomic symbol Ba) is an alkaline Earth metal. Barite (also spelled baryte) is a mineral composed of barium sulfate. It is used in paints, inks, paper, and rubber. It is also used in radiology for diagnostic…
- Subject Precious stones, Minerals, Barite
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Tourmaline
- Undated
Boron (atomic symbol B), a naturally occuring Earth element, was first isolated by Sir Humphry Davy and Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808. Tourmaline is a boron silicate. Opaque and black in…
- Subject Precious stones, Minerals, Tourmaline
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Amazonite
- Undated
Amazonite is a potassium-based blue-green variety of microcline feldspar. Its color may be an indication of the presence of iron or lead. Amazonite has been used as a decorative gemstone in statues and jewelry.
- Subject Amazonite, Precious stones, Minerals
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Celestine
- Undated
Celestine is a mineral with a light blue color. It is a source of the element strontium (atomic symbol Sr). Strontium compounds are commonly used in fireworks, fluorescent lights, and dyes and paints.
- Subject Celestite, Precious stones, Minerals
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Professor Dorothy Hodgkin
- 1978
Study for a never-finished portrait of Dorothy Crowfoot Hodgkin OM FRS (1910-1994), by English artist Graham Sutherland. Hodgkin was an English biochemist who won the Nobel Prize in Chemistry in 1964 for her work in…
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37 items
Instructions, Beckman/SDS Hybrid Fortran II
- Circa 1964
IBM developed the Fortran programming language in the 1950s; it remains in use as of 2017, with a major revision slated for a 2018 release. A commercial solid-state computer system, including a Beckman 2200 analog…
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19 items
Beckman Digital pH Meter
- Beckman Instructions 81804
- 1969-Jun
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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26 items
Second Quarterly Status Report: Contract NASr-76, Phase II, Spaceborne Gas Chromatograph
- 1962-Mar-01
Beckman Instruments' Space Engineering Group contracted with NASA to design a gas chromatograph to analyze the atmosphere within a spacecraft's cabin. The prototype device weighed under 12 pounds and used under 10 watts…
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51 items
Instruction Manual, Zeromatic pH Meter
- 514-B
- 1957-Jul
Intentionally blank pages (28, 40, and 42) have been omitted from the digital work.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…
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Dow Chemical Company sign at South Power Station
- 1950-Sep-12
Close-up view of a newly-installed reproduction of the Dow Chemical Company's diamond emblem on the roof of the South Power Station at the Company's headquarters in Midland, Michigan. An unidentified Power Division…
- Creator Of Work Dow Chemical Company
- Subject Branding (Marketing), Emblems, Industries, Electric signs, Dow Chemical Company, Employees
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Crystal puller
- Circa 1964 – 1968
Used to create silicon ingots for use in the semiconductor industry, this crystal puller consists of two main parts, the furnace and the puller: the furnace is cylindrical and located at the bottom of the instrument, it…
- Creator Of Work Lorenzini, Robert E.
- Manufacturer Elmat
- Subject Silicon, Semiconductors
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Mildred Wells using Hart moisture meter at Hercules Hopewell plant
- 1961-Nov
General view of employee Mildred Wells using a Hart moisture meter to measure the moisture in a sample of carboxymethyl cellulose (CMC) at the Hercules Powder Company plant in Hopewell, Virginia. Also known as cellulose…
- Creator Of Work Hercules Incorporated
- Photographer United Press International
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Women employees, Wells, Mildred
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Mildred Wells using Brookfield Viscometer at Hercules Hopewell plant
- 1961-Nov
General view of employee Mildred Wells using a Brookfield Viscometer to measure the viscosity of a carboxymethyl cellulose (CMC) solution at the Hercules Powder Company plant in Hopewell, Virginia. Also known as…
- Creator Of Work Hercules Incorporated
- Photographer United Press International
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Viscosimeter, Corporations, Cellulose, Women employees, Viscosity, Hercules Incorporated, Wells, Mildred
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2 items
Mildred Wells testing samples at Hercules Hopewell plant
- 1961-Nov
Two views of employee Mildred Wells testing samples of carboxymethyl cellulose (CMC) for residual fibers at the Hercules Powder Company plant in Hopewell, Virginia. As visible in the photograph, the samples were placed…
- Creator Of Work Hercules Incorporated
- Photographer United Press International
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Women employees, Wells, Mildred
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Production of cellulose gum at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of the production of carboxymethyl cellulose (CMC) at the Hercules Powder Company plant in Hopewell, Virginia. Also known as cellulose gum or tylose powder, CMC is a cellulose derivative commonly used as a…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Hercules Incorporated, Corporations, Cellulose, Machinery
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Employee loading packaged chemical cotton at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of an unidentified employee loading packages of so-called "chemical cotton" into a boxcar at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified cellulose obtained…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Cotton, Hercules Incorporated, Corporations, African Americans, Cellulose, Machinery
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Control panel at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of a control panel used to manage the continuous bleaching operation, part of the production of so-called "chemical cotton," at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Hercules Incorporated, Corporations, Cellulose, Machinery
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2 items
Employee operating autoclave control panel at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
Two views of an unidentified employee operating the control panel on an autoclave used to process ethyl cellulose manufactured at the Hercules Powder Company plant in Hopewell, Virginia. Ethyl cellulose manufactured by…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Ethylcellulose, Hercules Incorporated, Corporations, Cellulose, Machinery, Autoclaves
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Employee operating loose pulp dryer at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of an unidentified employee operating a loose pulp dryer at the Hercules Powder Company plant in Hopewell, Virginia. The loose pulp dryer was likely used to process cellulosic fibrous materials, such as…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Hercules Incorporated, Corporations, African Americans, Cellulose, Machinery
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Employee washing chemical cotton at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of an unidentified employee washing so-called "chemical cotton" as part of the continuous bleaching process at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Cotton, Hercules Incorporated, Corporations, Cellulose, Machinery
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Employees at work in Sheeting Department at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of two unidentified employees using a machine to cut stock of so-called "chemical cotton" into sheets at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Cotton, Hercules Incorporated, Corporations, Cellulose, Machinery
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Continuous digester at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of the charging end of a continuous digester used at the Hercules Powder Company plant in Hopewell, Virginia. The continuous digester system was likely used to process cellulosic fibrous materials, such as…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Hercules Incorporated, Corporations, Cellulose, Machinery
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Continuous bleaching equipment at Hercules Hopewell plant
- 1957-Mar-12 – 1957-Mar-15
General view of continuous bleaching equipment used in the production of so-called "chemical cotton" at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified cellulose obtained…
- Creator Of Work Hercules Incorporated
- Subject Employees, Chemical industry, Hercules Incorporated, Corporations, Cellulose, Machinery
