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Show moreThree reprints of A Kinetic Theory of Gravitation. Read by Brush before the American Association for the Advancement of Science, December 1910. Brush explains his theory that the properties of gravity are linked to the ether, citing past theories, as well as experiments he has conducted
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 25
Folder 11
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Show moreThree reprints of Changes in the Density of the Ether and Optical Effects of Changes in Ether Density, read by Brush on June 30, 1908 before the American Association for the Advancement of Science, discussing experiments conducted by Brush exploring the susceptibility of the ether to a change in density or pressure. Digital copy includes scan of first book
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 25
Folder 9
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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 moreTwo typed and one handwritten manuscript related to the paper by Charles F. Brush, Sr., entitled Discussion of "A Kinetic Theory of Gravitation," which further explains the theory he expounds in his paper, A Kinetic Theory of Gravitation, that gravitation is due to intrinsic energy of the ether. Originally read on April 24, 1914. Includes publication of paper from the Proceedings of the American Philosophical Society, January to May, 1914, a typed copy of the article abstract and handwritten copy of article abstract, both with no date
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 25
Folder 13
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Show moreTwo reprints of the article by Charles F. Brush, Sr. entitled, Discussion of a Kinetic Theory of Gravitation, II, and Some New Experiments in Gravitation, from the Proceedings of the American Philosophical Society, Volume 60, Number 2, dated 1921. Originally read April 22, 1921. Brush conducts experiments and reports his findings promoting his theory that energy in all its forms comes in some way from the ether and is energy of the ether
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 6
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Show moreTwo reprints of the second paper of the article by Charles F. Brush, Sr. entitled, Discussion of a Kinetic Theory of Gravitation II and Some New Experiments in Gravitation, from the Proceedings of the American Philosophical Society, Volume 61, Number 3, dated 1922. Brush expands upon his findings of the previous paper on the kinetic theory of gravitation, and experiments further to prove the mass to weight ratio relationship differs in different substances
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 7
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Show moreTwo reprints of the third version of the article by Charles F. Brush, Sr. entitled, Discussion of a Kinetic Theory of Gravitation II, and Some New Experiments in Gravitation, from the Proceedings of the American Philosophical Society, Volume 62, Number 3, dated 1923. Originally read April 20, 1923. Brush continues his experiments with weights, using different metals and comparing their velocity when falling
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 8
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Show moreTwo reprints, three typescripts, and one handwritten manuscript for the article by Charles F. Brush, Sr. entitled, Discussion of the Kinetic Theory of Gravitation III, from the Proceedings of the American Philosophical Society, Volume 65, Number 3, dated 1926. Originally read April 23, 1926. Brush presents some experimental evidence supporting the theory of continual generation of heat in some igneous rocks and minerals, and the relation of this to the internal heat of the earth and presumably the sun. Tests conducted on machinery at the Sandusky Cement Company
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 11
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Show moreOne reprint, one typescript abstract, two handwritten manuscripts for the article by Charles F. Brush, Sr. entitled, Discussion of the Kinetic Theory of Gravitation IV: Correlation of Continual Generation of Heat in Some Substances and Impairment of their Gravitational Acceleration. Reprint from the Proceedings of the American Philosophical Society, Volume 67, Number 2, dated 1928. Handwritten manuscripts dated April, 1928. No date on typescript abstract. Brush presents a summary and further evidence from his experiments in gravitation
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 15
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Show moreFive reprints, one typescript, one handwritten manuscript, and one handwritten manuscript for the article by Charles F. Brush, Sr. entitled, Gravitation. Reprints, dated 1929, from the Proceedings of the American Philosophical Society, Volume 68, Number 1. Typescript dated April, 1929. Handwritten manuscript undated, containing partial text for article. Handwritten manuscript for speech, dated April, 1929, of section entitled, Experimental Evidence of the Ether Waves of Gravitation, probably for the speech, originally read April 19, 1929, before the Philosophical Society. Brush presents evidence for his theory of gravitation from a number of experiments he has performed
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 27
Folder 1
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Show moreTwo typed bibliographies, no date, of scientific papers written by Charles F. Brush, Sr. between 1875-1928. Includes citations for papers on the kinetic theory of gravitation and other scientific experiments conducted by Brush related to gases and the ether
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 25
Folder 1
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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 more8 articles from 1922, 1926, and 1927 regarding Brush biographical information, American Philosophical Society members, Avon plant, and 50 year anniversary of sale of first Brush dynamo. 37 articles from 1928 regarding Brush awards, Brush Foundation, death of Myron T. Herrick, Brush study of gravitation. 47 articles from 1929 regarding Brush 80th birthday, Brush Foundation, birth control debate, Brush gravitation and ether studies, and death of Brush
Charles F. Brush, Sr., Papers
Series 6: Newspaper Clippings (1879-1964)
Box 23
Folder 2
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Show moreOne reprint of, one typescript, and one handwritten manuscript for the article by Charles F. Brush, Sr. entitled, Persistent Generation of Heat in Some Rocks and Minerals, and its Probable Significance, Second Paper, from the Proceedings of the American Philosophical Society, Volume 66, dated 1927. Originally read April 29, 1927, typescript dated April, 1927. Brush continues his experiments with heat generation in various rock samples, in support of his kinetic theory of gravitation. Tests conducted with machinery at the Sandusky Cement Company
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 12
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Show more13 reprints of and typescript and handwritten manuscript for the article by Charles F. Brush, Sr. entitled, Some Experimental Evidence Supporting the Kinetic Theory of Gravitation, from the Journal of the Franklin Institute, Volume 206, Number 2, dated August, 1928. Brush summarizes some of his past achievements, including the secondary battery, then goes on to briefly explain the Kinetic Theory of Gravitation, using evidence from his previous experiments in gravitation and persistent generation of heat in some rocks and minerals
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 14
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Show moreTwo reprints, one typescript, and one handwritten manuscript for the article by Charles F. Brush, Sr. entitled, Some New Experiments in Gravitation, Fifth Paper, Change in Weight of Metals under Strain, from the Proceedings of the American Philosophical Society. Volume 64, Number 1, dated 1925. Typescript dated April 1925, manuscript no date. Brush continues gravity experiments, focusing on the variations in mass to weight ratios of same substances when there is a change in physical condition
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 10
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Show moreTwo reprints of the article by Charles F. Brush, Sr. entitled, Some New Experiments in Gravitation, fourth paper, from the Proceedings of the American Philosophical Society, Volume 63, Number 1, dated 1924. Originally read April 26, 1924. Brush continues with experiments regarding the falling velocities of different metals in relation to his kinetic theory of gravitation
Charles F. Brush, Sr., Papers
Series 7: Articles by Charles F. Brush (1879-1929)
Box 26
Folder 9
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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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