William Herschel

Sir William Herschel is a British astronomer and composer born in Germany and is widely known as the founder of astronomical observation astronomy. He discovered Uranus and its two satellites and developed the theory of evolution of star evolution. Herschel was approved in 1816 and was the first astronomer to suggest that the nebula is composed of stars.

Born in Hanover, Brunswick-Lüneburg on 15th November 1738, William Herschel's father was a German musical musician. After France invaded Hanover in 1757, his father sent him to evacuate to the UK, and Herschel became a music teacher and composer.

After studying "Harmonics" and "Complete Optical Systems" by Robert Smith, William Herschel became interested in how to build a telescope and distant celestial bodies. He made his own telescope and eyepiece, and its progress is sufficient to achieve a magnification of 6,450 times. Herschel conducted a preliminary survey of the sky with two preliminary telescopes and in the third night sky survey in 1781 he discovered an unusual object, in fact Uranus and its two satellites. Titania and Oberon.

This discovery won him the famous Copley medal of 1781 and the Royal Society of London scholarship.

Herschel later studied the nature of the nebula, discovered that all nebulae consisted of stars, denying the long-standing view that the nebula is composed of shining liquids. He also discovered the two Saturn, Mimas and Enceladus, and created the term "asteroid." Herschel insisted that the solar system is crossing the universe and found the direction of exercise. He also suggested that the Milky Way is disc shaped

William Herschel was appointed as a foreign member of the Royal Swedish Academy of Sciences in 1813 and was jazzed in 1816 after three years. He died on Slau Berkshire on August 25, 1822. This is Herschel. He was 83.

This beautifully organized book introduces the fundamental elements of the pioneering work of William and Caroline Herschel in the second half of the 18th century. Michael Hoskin showed that William Herschel was the first observer to observe a cosmologist and was one of the first observers to attack the stellar universe outside the solar system. They appear as astronomical objects, and Herschel does not ignore the ray. . Hoskins pointed out that Herschel measured, cataloged and explained it as an achievement of "Nebula", their structure evolves over time, until the correct conclusion that Newton's gravity is the driving force of change did. Man

The most important observational astronomer in this period was William Herschel. Herschel was born in Hanover, Germany in 1738, but he moved to the UK as a young man to avoid the mainland war. He settled in Bath and lived as a musician and music teacher while he was using all his leisure time for amateur astronomy he cultivated at a very high level. By making his own telescope, he soon got better equipment than anyone else. When he shot a double star's sky in 1781, he found a small object and first shot a comet or a nebula. Herschel was convinced that he discovered the new comet It would not be an unusual event, but as soon as other astronomers proved that it was orbiting the sun in a nearly circular orbit it was a planet It was called. In order to receive royal patronage, Herschel proposes to name Georgium Sidos to a new object, after George George III, the star of Georgia.