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What is "magnifying glass"

Longman Dictionary of Contemporary English
magnifying glass
noun
EXAMPLES FROM CORPUS
▪ And Rathbone would be on the case, with his bloodhound and magnifying glass.
▪ By squinting or using a big magnifying glass.
▪ Fujisaki did give the jurors the magnifying glass they requested.
▪ One should pass the magnifying glass over to science; the eyes are sufficient to appreciate the beauties of the landscape.
▪ Use of a magnifying glass may be helpful in examining and repairing wounds.
▪ When the New Testament is put under the detective's magnifying glass, several whodunnits emerge.
The Collaborative International Dictionary
magnifying glass

magnifying glass \magnifying glass\ n. A single convex lens which magnifies the apparent dimensions of objects seen through it, and is used to produce an enlarged image.

Syn: hand glass.

Wiktionary
magnifying glass

n. An instrument made of convex glass, used to magnify.

WordNet
magnifying glass

n. light microscope consisting of a single convex lens that is used to produce an enlarged image; "the magnifying glass was invented by Roger Bacon in 1250" [syn: hand glass, simple microscope]

Wikipedia
Magnifying glass

A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image).

A sheet magnifier consists of many very narrow concentric ring-shaped lenses, such that the combination acts as a single lens but is much thinner. This arrangement is known as a Fresnel lens.

A magnifying glass can also be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting.

The magnifying glass is an icon of detective fiction, particularly that of Sherlock Holmes.

Usage examples of "magnifying glass".

If you click on the small jail icon in the upper right-hand corner, you can view a recent photograph of him with Governor Crimm, who is the gentleman on the left holding a magnifying glass.

He raised the huge magnifying glass once more and the eye two inches wide reappeared behind the lens.

And going back, Strongbow with his magnifying glass for seeing through the ages and old Menelik with his underground musicales and Crazy Cohen with his back-to-back dreams in sevens, the three of them feasting away the last century in an oasis called the Panorama.

It's so much like the magnifying glass you use to start fires with when you're ten.

Doc borrowed the magnifying glass Johnny wore in his left spectacle lens, and inspected the door for finger prints.

Doc borrowed the magnifying glass Johnny wore in his left spectacle, lens, and inspected the door for finger prints.

Settling again in the reading chair, he trained the magnifying glass on the second of the men, the jester.