a converging lens used to produce heat or ignite substances by focusing the sun's rays.
- Also called sunglass.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use burning glass in a sentence
I took the precaution, however, to put the burning-glass into my pocket lest we should want fire.The Coral Island | R.M. Ballantyne
They lack the burning glass of a purpose, to focalize upon one spot the separate rays of their ability.How to Succeed | Orison Swett Marden
He was like a great burning glass, concentrating the rays of the sun upon a single spot; he burned a hole wherever he went.How to Succeed | Orison Swett Marden
To show the action of a burning glass send a beam of light into a darkened room, and place in its path a double convex lens.Physics | Willis Eugene Tower
That burning glass is what did it, said one more reflective man.The Girls of Central High | Gertrude W. Morrison
British Dictionary definitions for burning glass
a convex lens for concentrating the sun's rays into a small area to produce heat or fire
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