- Brush, Charles Francis, 1849-1929 -- Correspondence (x)
- Ether (Space) (x)
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Show more6 typed letters between Charles F., Sr., and C. Cornell discussing Cornell's theory of and blueprints for a water and air engine likely to be a perpetual motion scheme.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 4
Folder 5
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Show more7 Typed and handwritten letters between W. W. Keen and Charles F., Sr., written in 1924 and 1928, in the first correspondence Keen requests money from Brush, which Brush feels he cannot afford at the time, Keen later writes to congratulate Brush on receiving the Franklin Institute Medal in 1928, and again discussing Brush's theory of gravity, about which Keen recommends reading Millikan's articles and Brush agrees. Final letter from Keen regarding establishment of Brush Foundation, particularly his familiarity with Dr. T. Wingate Todd. 2 typed letters between Sarah Starr and Brush, written in 1928, in which Starr describes the creation of a Keen Fund to which Brush promises 1000 dollars.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 4
Folder 16
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Show more5 Typed and handwritten letters between Dayton C. Miller and Charles F., Sr., regarding attempting to disprove experiments that support Einstein’s theory of relativity in 1926, Miller's and Brush's experiments in the ether and gravitation in 1928, and Brush's 80th birthday in 1929.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 5
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Show more16 typed and handwritten letters between John Millis and Charles F., Sr., discussing Einstein's Theory of Relativity, Brush's gravitation experiments, Millis's thoughts on gravity and magnetism, astronomy, and one about the Brush Foundation. Final letter from Millis wishes Brush happy 80th birthday. Includes paper Millis wrote for Scientific American's Einstein contest in 1921, and a letter from Millis to Scientific American regarding the papers they published as a result of the contest. Letters from 1921, 1922, 1925, 1928, 1929.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 7
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Show more3 Typed and handwritten letters between Sidney Stevens and Charles F., Sr., regarding theories each held concerning the ether as a medium for light and gravitation. Includes letter from Stevens to Leigh Page describing Brush's paper on gravitation which Stevens felt would satisfy Page's mathematical issues with ether.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 18
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