Research topic: James Bradley

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James Bradley

The Columbia Encyclopedia, Sixth Edition
James Bradley 1693-1762, English astronomer. His discovery of the aberration of light, announced in 1728, provided an important line of evidence for the motion of the earth around the sun. In 1742 Bradley became the third Astronomer Royal. Under his direction the observatory at Greenwich was supplied with new instruments; with some of these he cataloged the positions of more than 3,000 stars. His second important discovery, the nutation, or "nodding," of the earth's axis, was only made known in 1748, after it had stood the test of careful observations over a period of nearly 19 years. ... Read more
James Bradley
James Bradley The English astronomer James Bradley (1693-1762), one of the most determined and meticulous astronomers...aberration of light and the nutation of the earth's axis. James Bradley, who was the nephew of the astronomer James Pound, was born... Read more
Bradley, James
Bradley, James (1693–1762)Englishastronomer. In collaboration with Samuel Molyneux (1689–1728) he attempted to detect stellar parallax...the Earth orbits the Sun. From the amount of aberration he calculated the speed of light to within 2% of the true value. In 1742 Bradley became the third ... Read more

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