Search Results
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Repair shop at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of the repair shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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Control board for catalyst testing system
- Circa 1928
General view of the control board for the catalyst testing system at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.)…
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Apparatus used for reaction of active nitrogen
- Circa 1928
General view of apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory for the reaction of active nitrogen with carbon monoxide, carbon dioxide, and oxygen and hydrogen gas.
The Fixed…
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Use of silica gel in arc process
- Circa 1928
General view of the apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to introduce silica gel into an arc process. In the early 20th century, the arc process, in which electric…
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Reaction bombs for testing of catalysts
- Circa 1928
General view of reaction bombs used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to test catalysts at 100 atmospheres of pressure. Numbers are visible on the exterior of the various…
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Crackers, deoxidizers, and scrubbers at catalyst testing plant
- Circa 1928
General view of crackers, deoxidizers, and scrubbers at the Fixed Nitrogen Research Laboratory's catalyst testing plant. Numbers are visible on the exterior of the various containers.
The Fixed Nitrogen Research…
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High-pressure purification apparatus at catalyst testing plant
- Circa 1928
General view of high-pressure purification apparatus used at the Fixed Nitrogen Research Laboratory's catalyst testing plant.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in…
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Gas storage facility at catalyst testing plant
- Circa 1928
General view of the exterior of the gas storage facility at the Fixed Nitrogen Research Laboratory's catalyst testing plant. Two unidentified workers are visible on the right-hand side of the photograph. A sign reading…
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Apparatus for water-gas catalysts
- Circa 1928
Apparatus for the production of catalysts used to initiate water-gas shift reactions at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The water-gas shift reaction…
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Stirring machine designed at Arlington Experimental Farm
- Circa 1928
View of a stirring machine designed at the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in April 1900, Arlington Farm served as the main field laboratory for the Bureau of Soils,…
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Samples of commercial fertilizer and concentrated fertilizer mixtures
- Circa 1928
Four stoppered jars containing samples of commercial fertilizer and concentrated fertilizer mixtures produced at the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in April 1900,…
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Apparatus for testing of catalysts
- Circa 1928
General view of apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to test catalysts at 30 atmospheres of pressure.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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Shaking machine designed at Arlington Experimental Farm
- Circa 1928
View of a shaking machine designed at the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in April 1900, Arlington Farm served as the main field laboratory for the Bureau of Soils,…
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Apparatus for the study of adsorption of gases on catalysts
- Circa 1928
General view of an apparatus used to study the adsorption of gases on catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Adsorption refers to a surface…
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L. Pinck using liquid air condenser for low-temperature distillations
- 1928-Aug-21
General view of Mr. L. Pinck demonstrating use of a liquid air condenser employed for low-temperature distillations at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
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Dr. D.C. Bardwell studying the mechanism of nitrogen fixation by alpha rays
- 1926-Apr
General view of Dr. D.C. Bardwell inspecting the apparatus used for the fixation of nitrogen by alpha rays at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The…
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E.H. Johnston studying ozone production at the Fixed Nitrogen Research Laboratory
- 1926-Apr
General view of Mr. E.H. Johnston demonstrating an apparatus used for the production of ozone at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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R.J. Connor photographing the spectrum of active nitrogen
- 1926-Apr
General view of R.J. Connor photographing the spectrum of active nitrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. In chemistry, "spectrum" commonly refers…
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J.F. Shultz investigating the effect of phosphine upon ammonia catalysts
- 1926-Apr
General view of J.F. Shultz demonstrating an apparatus used to analyze the effect of phosphine upon ammonia catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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Dr. E. C. White with apparatus for the automatic analysis and indication of the carbon monoxide content of a gas stream
- 1926-Apr
General view of Dr. E. C. White demonstrating use of an apparatus for the automatic analysis and indication of the carbon monoxide content of a gas stream at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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Dr. M.F. Fogler with apparatus for dissociation of nitric acid
- 1926-Apr
General view of Dr. M.F. Fogler demonstrating an apparatus used for the dissociation of nitric acid at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed…
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Dr. Sebastian Karrer measuring the thermal conductivity of active nitrogen
- 1926-Apr
General view of Dr. Sebastian Karrer using an apparatus to measure the thermal conductivity of active nitrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The…
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High-temperature vacuum furnace
- Circa 1926
High-temperature vacuum furnace used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in 1919 under…
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Electric arc furnace for making ferro-aluminum alloys
- Circa 1926
Electric arc furnace used to make ferro-aluminum alloys at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American…
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Exhibit concerning the fixation of atmospheric nitrogen
- Circa 1926
Exhibition display concerning the fixation of atmospheric nitrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The display includes several diagrams depicting…