John Michell
John Michell
1724?-1793
British geologist and astronomer who theorized about the origin of earthquakes, estimated the velocity of seismic waves in Earth's crust, and proposed various methods for determining earthquake epicenters (1760). His most significant achievement was his 1767 argument that double stars are binary systems because the number of doubles observed is too great to have resulted from random distribution alone. Michell is also remembered for making the first realistic estimate of stellar distances (1784).
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Estimation , How many fish are in this lake? What proportion of the voting population favors candidate A? How much paint is needed for this particular room? What… Double , Double
The etheric counterpart of the physical body which, when out of coincidence, may temporarily move about in space in comparative freedom and ap… John Michell , MICHELL, JOHN
astronomy.
Michell earned a permanent place in the history of stellar astronomy for two signal accomplishments: he was the first to mak… Double Star , double star Two stars that appear close together in the sky. There are two types of double star: binary stars and optical doubles (two stars that are… William Frederick Herschel , Herschel, William
Herschel, William
(b. Hannover, Germany, 15 November 1738; d. Observatory House, Slough, Buckinghamshire, England, 25 August 1822)… George Washington Hough , astronomy, meteorology.
Hough’s main contributions to astronomy were his discovery of 627 double stars and his floating island theory for the great r…
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John Michell