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2. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   A pen seen through a magnifying glass Jim Hutton as detective Ellery Queen, posing with a magnifying glass. A magnifying glass 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. Beyond its primary function of magnification, this simple yet ingenious tool serves a ...

3. Stanhope lens - Wikipedia

   en.wikipedia.org/wiki/Stanhope_lens

   Stanhope lens with case, early 1800s. A Stanhope lens is a simple, one-piece microscope invented by Charles, the third Earl of Stanhope.It is a cylinder of glass with each end curved outwards, one being more convex than the other.

4. Micrographia - Wikipedia

   en.wikipedia.org/wiki/Micrographia

   Micrographia: or Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses. With Observations and Inquiries Thereupon is a historically significant book by Robert Hooke about his observations through various lenses. It was the first book to include illustrations of insects and plants as seen through microscopes.

5. Microscopy - Wikipedia

   en.wikipedia.org/wiki/Microscopy

   Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...

6. 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 ...

7. Hidden Uses for Common Household Products Most People Don't ...

   www.aol.com/finance/hidden-uses-common-household...

   1. Tennis Ball. Tennis balls are so useful that you may want to buy some to keep around the house even if you don’t play. For example, half a tennis ball can help screw open tight caps.

8. The 20 Black Friday deals AOL shoppers are buying the most

   www.aol.com/lifestyle/most-popular-black-friday...

   Here are the most popular Black Friday deals our AOL readers have been shopping today, including AirPods, smart plugs, Kate Spade bags, and Old Navy coats.

9. File:Magnifying glass 01.svg - Wikipedia

   en.wikipedia.org/wiki/File:Magnifying_glass_01.svg

   The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking ...