Search Results
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Apparatus used to analyze the decomposition of ammonia
- 1927-Jul-26
General view of the construction and calibration of an apparatus used to analyze the decomposition of ammonia on hot surfaces at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in…
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Gas purification rack
- 1930-Jan-08
General view of the gas purification rack, a component of an apparatus used to study the catalytic decomposition of ozone at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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Apparatus for studying the catalytic decomposition of ozone
- 1930-Jan-08
General view of an apparatus used to study the catalytic decomposition of ozone at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research…
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Bone and Wheeler gas analysis apparatus
- 1930-Jan-08
General view of the Bone and Wheeler gas analysis apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. A Bone and Wheeler apparatus, which reads gas…
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Apparatus for investigating the Phase Rule of an iron-nitrogen system
- 1930-Jan-08
General view of an apparatus used to investigate the Phase Rule in an iron-nitrogen system at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. First proposed by Josiah…
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Dr. D.C. Bardwell using an apparatus for experimenting with radon
- 1926-Apr
General view of Dr. D.C. Bardwell using an apparatus to experiment with the chemical effects of radon at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed…
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2 items
Dr. C.H. Kunsman with positive ion emitting device
- 1926-Apr
Two views of device used to study positive ions, presumably in the activation of nitrogen gas and hydrogen, at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The…
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Apparatus for determining the solubility of gases in water
- 1930-Jan-08
General view of an apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to determine the solubility of gases in water at various temperatures and pressures up to 1,000 atmospheres.
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Apparatus for the analysis of micro quantities of gases
- 1930-Jan-08
General view of an apparatus used to analyze micro quantities of gases at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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Apparatus for the study of equilibrium
- 1930-Jan-08
General view of an apparatus for the study of equilibrium in the iron-water-iron oxide-hydrogen system at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed…
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Organic combustion furnace and train
- 1930-Jan-08
General view of the organic combustion furnace and train utilized 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 for measuring vapor pressures
- 1928-Aug-21
General view of an apparatus used to measure vapor pressures in the study of Urea synthesis at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. In the production of…
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Dr. Leatherman measuring traces of inert gas and air in nitrogen
- 1928-Aug-21
General view of Dr. Leatherman using an apparatus to measure traces of inert gas and air in nitrogen at the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory.
The Fixed Nitrogen Research Laboratory…
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Dr. Leatherman determining amount of inert gas in nitrogen
- 1928-Aug-21
General view of Dr. Leatherman using an apparatus to determine the amount of inert gas present in nitrogen made from the fractionation of liquid air at the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory. …
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Compressor used in carbon dioxide refrigeration system
- 1928-Aug-21
General view of compressor used in the carbon dioxide refrigeration system at the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory. The individual present in the photograph is identified as Mr. Tremearne.
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Apparatus used to analyze hydrogen
- Circa 1928
General view of an apparatus used to analyze hydrogen at the Fixed Nitrogen Research Laboratory's Synthetic Ammonia Division.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in…
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Hydraulic pressure pump and other laboratory apparatus
- 1928-Aug-21
General view of assorted apparatus used in the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory, including a hydraulic pressure pump, piston-type gauges, high-pressure booth, and valve manifold. The…
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Thermostat and equipment used to measure volume of gas
- 1928-Aug-21
General view of the thermostat and other equipment used to measure gas volumes in order to make compressibility determinations at the High-Pressure Laboratory, part of the U.S. Department of Agriculture's Fixed…
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Apparatus to study the compressibility of gases
- Circa 1928
General view of the thermostat and assorted apparatus used to study the compressibility of gases at high pressures at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. …
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Thermostat and equipment for determining compressibility
- 1928-Aug-21
General view of a thermostat and equipment used to determine the compressibility of gas at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. In chemistry,…
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Barometers and potentiometer at the Fixed Nitrogen Research Laboratory
- 1928-Aug-21
Mr. Hetherington demonstrating the barometers and potentiometer used for temperature control at the High-Pressure Laboratory, part of the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facilities…
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Measurement of gas volumes at Fixed Nitrogen Research Laboratory
- 1928-Aug-21
General view of the apparatus used to measure gas volumes in order to make compressibility determinations at the High-Pressure Laboratory, part of the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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Apparatus for studying the thermal decomposition of ammonia
- 1928-Aug-21
General view of an apparatus used to study the thermal decomposition of ammonia of the surface of tungsten, molybdenum, nickel, and iron catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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Compression and high-pressure storage cylinders
- 1928-Aug-21
General view of two compression and high-pressure storage cylinders used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Part of a hand-operated booster connected…
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Test tube for study of the activity of potassium ions and electrons
- 1928-Aug-21
General view of a test tube used to study the activity of potassium ions and electrons in the activation of nitrogen gas and hydrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in…
