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  2. Magnifying glass - Wikipedia

    en.wikipedia.org/wiki/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. A magnifying glass can be used to focus light, such as to concentrate the Sun's radiation to create a hot spot at the focus for fire starting.

  3. The 20 best gifts for parents of all ages - AOL

    www.aol.com/lifestyle/best-gifts-parents...

    10X Magnifying Glass with Light and Stand. $30 at Amazon. See 15 more. ... The best knee braces of 2025, hand-selected by a physical therapist; AOL.

  4. 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.

  5. Loupe - Wikipedia

    en.wikipedia.org/wiki/Loupe

    A photographic loupe for examining film and prints. A loupe (/ ˈ l uː p / LOOP) is a simple, small magnification device used to see small details more closely. [1] They generally have higher magnification than a magnifying glass, and are designed to be held or worn close to the eye.

  6. History of optics - Wikipedia

    en.wikipedia.org/wiki/History_of_optics

    It has been proposed that glass eye covers in hieroglyphs from the Old Kingdom of Egypt (c. 2686–2181 BCE) were functional simple glass meniscus lenses. [40] The so-called Nimrud lens, a rock crystal artifact dated to the 7th century BCE, might have been used as a magnifying glass, although it could have simply been a decoration. [41] [42 ...

  7. 50 Inventions From The Past That Were Amazingly Innovative - AOL

    www.aol.com/98-historical-inventions-were-ahead...

    The device is a wooden box with a complex system of gears and a hand crank. Analysis on the device showed that it dates back to the 1st or 2nd centuries BCE. ... it functions as a 3× magnifying ...

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