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refractor

refractor

2 7.0
A telescope that uses lenses to bend light to make an image
  • noun
  • /rɪˈfræktər/
  • Specialized
translation icon : refractor
  • With my new 4-inch refractor, I can clearly see the rings of Saturn from my backyard.
  • a 36-inch refractor
  • inch refractor
  • refractor at the Observatory

Examples

  • The Observatory itself had a 6-inch refractor and a transit instrument.

    Academic text (2005)
  • I set up my 4-inch refractor on my back deck outside my house in San Rafael, California.

    Academic text (2002)
  • I want a two-inch refractor for tomorrow.

  • We chose a refractor as our primary instrument for classroom and public observing.

    Academic text (2003)
  • William Hale bought his son an excellent 12-inch refractor to carry the new instrument.

    Academic text (1992)
  • At that time, the flagship of Lick Observatory was the great 36-inch refractor on Mount Hamilton.

    Academic text (2004)
  • From 1949 to 1966, the observatory dedicated a 25-centimeter refractor to observing those minor planets most in need of attention.

    Academic text (1996)
  • Barnard obtained time on the 36-inch refractor in 1892 by going over the director's head to the university trustees.

    Academic text (1992)
  • Prior to 1892, he was assigned to the Observatory's 12-inch Clark refractor and other smaller telescopes.

    Academic text (2004)
  • As the Observatory director, Holden was in charge of assigning observing time on the 36-inch refractor.

    Academic text (2004)

Synonyms

telescope
vsrefractor
440 3.3

A tool with lenses or mirrors that makes far things look closer

uses only lenses to bend light rather than mirrors or general magnification
optical telescope
vsrefractor
  • Specialized
2 3.8

A machine with lenses or mirrors that gathers and focuses visible light to see distant stars and planets

focuses light specifically by bending it through lenses to form an image
refracting telescope
vsrefractor
  • Specialized
1 6.7

A telescope that uses a large lens to bend light to make images you view through an eyepiece

is the shorter single word name for the same instrument

How Powerful

reflector
  • Specialized
3 7.0
optical telescope
  • Specialized
2 3.8
refractor
  • Specialized
2 7.0
spyglass
5 7.6

Surface Forms

refractor singular
refractors plural

Morphology

refractor = refract (transparent) = refract + or

Formed by adding the agent/instrument suffix '-or' to the verb 'refract', yielding 'one that refracts'; the relation is clear to learners familiar with 'refract'.

Etymology

Refractor comes from the Latin parts re- 'back' and frangere 'to break', the same root you see in fracture. So a refractor telescope 'bends' or 'breaks' the path of light to bring a clear image into focus.