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Galilean telescope

noun

  1. a refracting telescope that forms an erect image, consisting of an objective of relatively long focal length that causes light rays to converge and an eyepiece of short focal length that causes them to diverge.


Galilean telescope

/ ˌɡælɪˈleɪən /

noun

  1. a type of telescope with a convex objective lens and a concave eyepiece; it produces an erect image and is suitable for terrestrial use
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of Galilean telescope1

First recorded in 1715–25
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Example Sentences

But this is not the only objection to the Galilean Telescope.

In the Galilean Telescope a small concave eye-glass, ab (fig. 2), is placed between the object-glass and the image.

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