magnifying glass

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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.
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magnifying glass

[′mag·nə‚fī·iŋ ‚glas]
(optics)
Any device that uses a simple lens which enlarges the object being viewed.

magnifying glass

traditional detective equipment; from its use by Sherlock Holmes. [Br. Lit.: Payton, 473]

magnifying glass

, magnifier
a convex lens used to produce an enlarged image of an object
References in periodicals archive ?
Essentially, the Anchor Sight uses a magnifying lens with a red circle on it and cross-hairs similar to a riflescope to ensure that your form is spot-on no matter the difficulty of the shot.
Information would be transmitted from a thin-film transistor to the windshield through a magnifying lens that guarantees the image is of the proper size and sharpness.
Neil Radford, an enterprise fellow at the University of Warwick, has worked with colleagues at Warwick University's Manufacturing Group to create a moving magnifying lens which is used to help partially-sighted people use ATMs.
Three LED lights emit a soft blue light that focuses under the optical-grade 3X magnifying lens for those printouts of 8-or 10-point columns of figures or text.
Drops widen the pupils of your eyes, and the eye care professional uses a magnifying lens to examine your retina and optic nerve for problems.
35") three-diopter optical quality glass magnifying lens, which tilts independently of the light source for optimum positioning.
has a magnifying lens and lighting to show exactly where a weld puddle is applied during micro-repairs.
Using a piece of ice as a magnifying lens, Kos focuses sunlight on a pile of tinder until it ignites, and then he douses the flames with the melting ice.
Dermoscopy combines good lighting and a modest magnifying lens in a handheld device to allow doctors to better view and evaluate features such as mole color and shape.
Lastly, screen magnification techniques can include a magnifying lens placed in front of the system monitor; software programs; or a combination of hardware and software solutions that magnify the screen output.
A user touches a counting probe to each colony, viewed through a magnifying lens, and a digital counter automatically tracks of the number of colonies.
You don't need a magnifying lens to see just how futile terrorism is; all it takes is a few copies of old newspapers.