Telescope

The 100 inch (2.54 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, USA.

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.[1] 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.

Etymology

The word telescope (from the Ancient Greek τῆλε, tele "far" and σκοπεῖν, skopein "to look or see"; τηλεσκόπος, teleskopos "far-seeing") was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei.[2][3] In the Starry Messenger, Galileo had used the term perspicillum.

Other Languages
Afrikaans: Teleskoop
Alemannisch: Teleskop
አማርኛ: ቴሌስኮፕ
العربية: تلسكوب
armãneashti: Telescopu
asturianu: Telescopiu
azərbaycanca: Teleskop
Bân-lâm-gú: Tiàu-kiàⁿ
башҡортса: Телескоп
беларуская: Тэлескоп
беларуская (тарашкевіца)‎: Тэлескоп
भोजपुरी: दूरबीन
български: Телескоп
bosanski: Teleskop
català: Telescopi
Чӑвашла: Телескоп
čeština: Dalekohled
chiShona: Dongorahweva
corsu: Telescopiu
Cymraeg: Telesgop
dansk: Kikkert
Deutsch: Teleskop
eesti: Teleskoop
Ελληνικά: Τηλεσκόπιο
español: Telescopio
Esperanto: Teleskopo
euskara: Teleskopio
فارسی: تلسکوپ
français: Télescope
Frysk: Teleskoop
Gaeilge: Teileascóp
galego: Telescopio
贛語: 望遠鏡
한국어: 망원경
հայերեն: Աստղադիտակ
हिन्दी: दूरदर्शी
hrvatski: Teleskop
Bahasa Indonesia: Teleskop
interlingua: Telescopio
íslenska: Sjónauki
italiano: Telescopio
עברית: טלסקופ
ಕನ್ನಡ: ದೂರದರ್ಶಕ
ქართული: ტელესკოპი
कॉशुर / کٲشُر: دُربیٖن
қазақша: Телескоп
Kiswahili: Darubini
Kreyòl ayisyen: Teleskòp refraktè
Кыргызча: Телескоп
Latina: Telescopium
latviešu: Teleskops
Lëtzebuergesch: Teleskop
lietuvių: Teleskopas
Limburgs: Telescoop
lumbaart: Telescopi
magyar: Távcső
македонски: Телескоп
मराठी: दुर्बीण
მარგალური: ტელესკოპი
Bahasa Melayu: Teleskop
Mìng-dĕ̤ng-ngṳ̄: Chiĕng-lī-giáng
Mirandés: Telscópio
Nederlands: Telescoop (optica)
नेपाली: टेलिस्कोप
नेपाल भाषा: लुसाः
日本語: 望遠鏡
Napulitano: Ucchiarone
norsk: Teleskop
norsk nynorsk: Teleskop
oʻzbekcha/ўзбекча: Teleskop
ਪੰਜਾਬੀ: ਟੈਲੀਸਕੋਪ
پنجابی: ٹیلیسکوپ
Patois: Teliskuop
polski: Teleskop
português: Telescópio
Qaraqalpaqsha: Teleskop
română: Telescop
русский: Телескоп
Scots: Telescope
Sesotho sa Leboa: Thelesekôpo
shqip: Teleskopi
sicilianu: Telescopiu
Simple English: Telescope
slovenčina: Ďalekohľad
slovenščina: Daljnogled
کوردی: تەلیسکۆپ
српски / srpski: Телескоп
srpskohrvatski / српскохрватски: Teleskop
suomi: Kaukoputki
svenska: Teleskop
Tagalog: Teleskopyo
татарча/tatarça: Телескоп
తెలుగు: టెలిస్కోపు
тоҷикӣ: Телескоп
Türkçe: Teleskop
українська: Телескоп
اردو: دوربین
Tiếng Việt: Kính viễn vọng
Winaray: Teleskopyó
吴语: 望远镜
ייִדיש: טעלעסקאפ
粵語: 望遠鏡
Zazaki: Teleskop
中文: 望远镜