When was the telescope invented ?


Hello, Science enthusiasts, today I am going to explain you about a wonderful instrument with which you can observe the planets, moon what not present in the space. This instrument in called as the Telescope.

The legend goes that, playing one day in their father’s spectacle shop, two Dutch children realized that if they looked through both a concave lens close to their eye and a concave lens held at arm’s length, the local church tower was greatly magnified. Their father, Hans Lippershey (circa 1570-1619), then mounted the two lenses in a tube and tried to sell the device to the Dutch Army.

Whether the credit for this invention should go to Lippershey or to, for example, Zacharius Janssen or Jacob Metius, or even the Englishman Leonard Digges, has become a matter of considerable debate. At the very least, Lippershey is generally credited with popularizing the device and creating and disseminating designs for the first practical telescope. Soon similar instruments, known as “Dutch Trunks,” were appearing all over Europe.

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How and when this telescope was invented:
When was the telescope invented ?

The Italian astronomer and physicist Galileo Galilei heard about the new device when he was in Venice in May 1609. Returning to his university in nearby Padua. He made a telescope that magnified by about twenty times and had a field of view of about one-tenth of a degree.

Using this, he discovered that the sun had spots. Jupiter was accompanied by four satellites, Venus had phases, and the moon was mountainous. These results he published in March 1610 in his work, Siderius Nuncius (The Sidereal Messenger).

Telescopic astronomy never looked back. By 1611, the German astronomer Johannes Kepler was using a telescope consisting of two convex lenses. This is an instrument that gave greater magnification but an inverted image. In 1668 the English genius Sir Isaac Newton invented the reflecting telescope. Which uses a curved mirror rather than a large lens to collect and focus light. Thus eliminating the problem of severe chromatic aberration.

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