Amazon.com: Omegon AC 90/1000 EQ-2 Refractor Telescope with 90mm Aperture and 1000mm Focal Length : Electronics
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File:Zoorashia ours polaire.jpg - Wikimedia Commons
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SOLVED:An old refracting telescope placed in a museum as an exhibit is 55 cm long and has magnification of 45 . What are the focal lengths of its objective and eyepiece lenses?
Nikon D850 sample photo 308545973
File:Ellipse dont O est un des foyers - repérage polaire.png - Wikimedia Commons
File:Branche d'hyperbole ne contournant pas O l'un des foyers - repérage polaire.png - Wikimedia Commons
File:(Albi) Mademoiselle Polaire 1895 - Toulouse-Lautrec - MTL.186.jpg - Wikimedia Commons
What focal length should the reading spectacles have for a person for whom the least distance of distinct vision is 50 cm ?
Amazon.com: Omegon AC 90/1000 EQ-2 Refractor Telescope with 90mm Aperture and 1000mm Focal Length : Electronics
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Focal Systems
:max_bytes(150000):strip_icc():focal(999x0:1001x2)/anna-the-polarbear-2000-e2257ae5cfcb4ac4862358e0f03eef06.jpg "Polar Bear Killed During Mating Attempt at Detroit Zoo")
Polar Bear Killed During Mating Attempt at Detroit Zoo
