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.
[ 1715-25 ]
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.
[ 1715-25 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012