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2. Coddington magnifier - Wikipedia

   en.wikipedia.org/wiki/Coddington_magnifier

   A Coddington magnifier is a magnifying glass consisting of a single very thick lens with a central deep groove diaphragm at the equator, thus limiting the rays to those close to the axis, which minimizes spherical aberration. This allows for greater magnification than a conventional magnifying glass, typically 10× up to 20×. Most single lens ...

3. GrandPad review: A grand tablet for grandparents, but too ...

   www.aol.com/lifestyle/grandpad-review-grand...

   Articles offers curated general-interest stories (but no upsetting daily news, thankfully) from various sources, and the Toolbox app provides a magnifying glass, a flashlight and a calculator.

4. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   Magnifying glass on an arm lamp. The magnification of a magnifying glass depends upon where it is placed between the user's eye and the object being viewed, and the total distance between them. The magnifying power is equivalent to angular magnification (this should not be confused with optical power, which is a different

5. Magnification - Wikipedia

   en.wikipedia.org/wiki/Magnification

   The postage stamp appears larger with the use of a magnifying glass. Stepwise magnification by 6% per frame into a 39-megapixel image. In the final frame, at about 170x, an image of a bystander is seen reflected in the man's cornea. Magnification is the process of enlarging the apparent size, not physical size, of something.

6. Enlarger - Wikipedia

   en.wikipedia.org/wiki/Enlarger

   Enlarger lenses, like the dialyte construction, are generally symmetrical in design or nearly so, optimised for sharp focus at 2x to 10x magnification. [1] The light passes through a film holder, which holds the exposed and developed photographic negative or transparency. Prints made with an enlarger are called enlargements.

7. 30 Color Photos Photographers Took 100 Years Ago That Still ...

   www.aol.com/44-old-color-photos-showing...

   "If you look at your computer or phone camera screen with a strong magnifier, they both rely on exactly the same technology," Osterman explains. #7 East Face, Mont-Saint-Michel, Normandy, France ...