Telescope | Wikipedia audio article
Channel: wikipedia tts
Date: 25/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Telescope


00:00:58 1 Etymology
00:01:33 2 History
00:03:46 3 Types
00:06:32 3.1 Optical telescopes
00:07:55 3.2 Radio telescopes
00:09:20 3.3 X-ray telescopes
00:10:07 3.4 Gamma-ray telescopes
00:11:24 3.5 High-energy particle telescopes
00:12:22 3.6 Other types of telescopes
00:12:58 4 Types of mount
00:13:33 5 Atmospheric electromagnetic opacity
00:14:12 6 Telescopic image from different telescope types
00:14:34 7 By spectrum
00:14:51 8 Lists of telescopes



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SUMMARY
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Telescopes are optical instruments that make distant objects appear magnified by using an arrangement of lenses or curved mirrors and lenses, or various devices used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. The first known practical telescopes were refracting telescopes invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They found use in both terrestrial applications and astronomy.
The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope. In the 20th century, many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. The word telescope now refers to a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors.