magnifying glass(redirected from Optical device - hand lens)
Also found in: Dictionary, Thesaurus.
magnifying glass:see microscopemicroscope,
optical instrument used to increase the apparent size of an object. Simple Microscopes
A magnifying glass, an ordinary double convex lens having a short focal length, is a simple microscope. The reading lens and hand lens are instruments of this type.
..... Click the link for more information. .
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
magnifying glass[′mag·nə‚fī·iŋ ‚glas]
Any device that uses a simple lens which enlarges the object being viewed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
traditional detective equipment; from its use by Sherlock Holmes. [Br. Lit.: Payton, 473]
Allusions—Cultural, Literary, Biblical, and Historical: A Thematic Dictionary. Copyright 2008 The Gale Group, Inc. All rights reserved.
magnifying glass, magnifier
a convex lens used to produce an enlarged image of an object
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005