Search Results
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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…
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Rotary filter for extracting cyanamide from calcium cyanamide
- Circa 1926
Rotary filter used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to extract cyanamide from calcium cyanamide.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American…
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Apparatus for studying the separation of ammonia from carbon dioxide
- Circa 1926
Apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to study the separation of ammonia from carbon dioxide.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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Apparatus for oxidation of ammonia
- 1927-Jul-26
General view of an apparatus used to oxidize ammonia 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.) was…
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Experimental apparatus for production of hydrogen
- 1927-Jul-26
General view of an experimental apparatus to test the production of hydrogen from methane and steam at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed…
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Ammonia-carbon dioxide pump and Urea autoclave
- 1927-Jul-26
General view of the ammonia-carbon dioxide pump and Urea autoclave used 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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W.E. Kuentzel removing carbon monoxide from water gas
- 1926-Apr
General view of W.E. Kuentzel demonstrating use of an apparatus for the removal of carbon monoxide from water gas by means of preferential combustion at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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V.L. Gaddy with constant-temperature bath at Fixed Nitrogen Research Laboratory
- Circa 1927
General view of V.L. Gaddy demonstrating an apparatus used to create a constant-temperature bath to determine the equilibrium of Urea, a water-soluble powder form of carbonic acid frequently used as a fertilizer and…
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Portrait of Herbert Freundlich (1880-1941)
- 1920s – circa
Portrait of Herbert Freundlich (1880-1941). A student of Wilhelm Ostwald, Freundlich received his doctorate from the University of Leipzig in 1903 following his dissertation on the precipitation (coagulation) of colloid…
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Portrait of Marston Taylor Bogert (1868-1954)
- 1920s
Portrait of Marston Taylor Bogert (1868-1954), American Chemical Society President (1907-1908) known for his work on the synthesis of heterocyclic compounds, dyes, pharmaceuticals, and perfumes.
Marston Taylor Bogert…
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Portrait of Lammot du Pont II (1880-1952)
- Circa 1926
Portrait of Lammot du Pont II (1880-1952), former President of the E.I. du Pont de Nemours & Company (1926-1940) and Chairman of the Board of Directors.
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Portrait of Leo Hendrik Baekeland (1863-1944)
- After 1920 – 1944
Portrait of Leo Hendrik Baekeland (1863-1944), inventor of Bakelite, the first fully synthetic plastic.
- Manufacturer Underwood & Underwood
- Subject Portrait photography, Inventors, Bakelite, Baekeland, L. H. (Leo Hendrik), 1863-1944, Plastics
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Professor Wohler
- After 1840 – before 1940
A half-length portrait of Friedrich Wöhler (1800–1882), a German chemist.
- Artist Cook, Conrad
- After L'Allemand, Conrad, 1809-1880
- Subject Wöhler, Friedrich, 1800-1882
