Search Results
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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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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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Decomposition chamber for the thermal decomposition of ammonia
- 1928-Aug-21
Close-up view of a decomposition chamber used to facilitate the thermal decomposition of ammonia on tungsten, molybdenum, nickel, and iron catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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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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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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E.J. Fox operating rotary tunnel for absorption of nitric oxides
- 1928-Aug-21
General view of E.J. Fox demonstrating use of a rotary tunnel to facilitate the absorption of nitric oxides by ground phosphate rock at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in…
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E.J. Fox with towers used for absorption of nitric oxides
- 1928-Aug-21
General view of E.J. Fox demonstrating use of towers to facilitate the absorption of nitric oxides by phosphate rock at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.…
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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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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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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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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…
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Thermostat and apparatus for measuring vapor pressures
- 1928-Aug-21
General view of the thermostat and apparatusused 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. Urea is a…
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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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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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Thermostat, apparatus, and analytical train
- 1928-Aug-21
General view of the thermostat, apparatus, and analytical train 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…
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2 items
Letter from Max Bredig to Herman Mark, September 1928
- 1928-Sep-24
Max Bredig (1902-1977) informs Herman Mark (1895-1992) that he is unable to travel to Ludwigshafen because he feels insufficiently prepared for his scientific tasks.
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Letter from Fritz Haber, October 1, 1929
- 1928-Oct-01
Fritz Haber (1868-1934) provides a letter recommendation for Max Bredig (1902-1977).
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Letter from Louis F. Fieser to W. D. Collins
- 1928-Oct-05
Concerns the uniformity of scientific apparatus, specifically that of Pyrex round bottom, short ring neck flasks.
- Addressee Collins, W. D. (William Dennis), 1875-
- Author Fieser, Louis F. (Louis Frederick), 1899-1977
- Subject Scientific apparatus and instruments, Geological Survey (U.S.), Pyrex, Collins, W. D. (William Dennis), 1875-, Corning Glass Works, Fieser, Louis F. (Louis Frederick), 1899-1977, Fisher Scientific Company, American Chemical Society
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4 items
Letter from Georg Bredig to Kasimir Fajans, October 1928
- 1928-Oct-21
Georg Bredig (1868-1944) thanks his colleague, Kasimir Fajans, a professor of chemistry at the University of Munich, for his birthday letter commemorating Bredig's 60th birthday and for being hospitable towards his son,…
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Postcard from Paul Niggli to Georg Bredig
- 1928-Nov-24
Thank you from Paul Niggli (1888-1953) to Georg Bredig (1868-1944). Niggli was a Swiss mineralogist who looked at earth science in relation to chemistry and physics. He was a leader in the field of X-ray…
- Author Niggli, Paul, 1888-1953
- Addressee Bredig, Georg, 1868-1944
- Subject Niggli, Paul, 1888-1953, Bredig, Georg, 1868-1944
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2 items
Postcard from Adolf Windaus to Georg Bredig, November 1928
- 1928-Nov-27
Postcard recto advertises the care of war orphans. Verso includes a thank you note from Adolf Windaus (1876-1959) to Georg Bredig (1868-1944). Windaus received the Nobel Prize for Chemistry in 1928 for his research on…
- Author Windaus, Adolf, 1876-1959
- Addressee Bredig, Georg, 1868-1944
- Subject Windaus, Adolf, 1876-1959, Bredig, Georg, 1868-1944, Nobel Prize winners
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6 items
Neuzeitliche Kesselanlagen für jeden Druck und Verwndungszweck
- Modern Boiler Systems for Every Pressure and Purpose
- 1928-Dec
- Creator Of Work Arthur Rodberg A.-G.
- Subject Steam-boilers
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2 items
Postcard from Paul Walden to Georg Bredig, December 1928
- 1928-Dec-28
Postcard from Paul Walden (1863-1957) to Georg Bredig. The postcard features an illustration of a crocus surfacing from the snowy ground. From the earth below, people emerge playing trumpets.
Walden was a chemist who…
- Author Walden, Paul, 1863-1957
- Addressee Bredig, Georg, 1868-1944
- Subject Walden, Paul, 1863-1957, Bredig, Georg, 1868-1944, Chemists, New Year