Telescope
Telescope
A telescope is an optical instrument that makes 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.
History[edit | edit source]
The first known practical telescopes were refracting telescopes invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They were used for both terrestrial applications and astronomy.
Types of Telescopes[edit | edit source]
There are three main types of optical telescope:
- Refractors (Dioptrics) which use lenses
- Reflectors (Catoptrics) which use mirrors
- Combined lens-mirror systems (Catadioptrics) such as the Schmidt-Cassegrain and the Maksutov telescope which use both mirrors and lenses.
Function[edit | edit source]
The telescope's function is to gather light and bring that light to a point where it can be magnified and examined.
See also[edit | edit source]
- List of telescope types
- History of the telescope
- Astronomical observatory
- Radio telescope
- Space telescope
References[edit | edit source]
External links[edit | edit source]
Telescope Resources | ||
---|---|---|
|
|
Translate to: East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski
Navigation: Wellness - Encyclopedia - Health topics - Disease Index - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro) available.
Advertise on WikiMD
WikiMD is not a substitute for professional medical advice. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD