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2. Bell & Howell - Wikipedia

   en.wikipedia.org/wiki/Bell_&_Howell

   In 2010 consumer electronics manufacturer Elite Brands licensed the Bell + Howell brand name to use on optical and imaging products including digital cameras and camcorders, binoculars, telescopes, lenses, and various camera accessories. [16]

3. Field of view - Wikipedia

   en.wikipedia.org/wiki/Field_of_view

   Angular field of view is typically specified in degrees, while linear field of view is a ratio of lengths. For example, binoculars with a 5.8 degree (angular) field of view might be advertised as having a (linear) field of view of 102 mm per meter. As long as the FOV is less than about 10 degrees or so, the following approximation formulas ...

4. Where to buy solar eclipse glasses and how to know if they're ...

   www.aol.com/lifestyle/solar-eclipse-glasses-2024...

   Before 2017, it had been more than three decades since the last total solar eclipse was visible from the U.S. in 1979. But just because this once-in-a-lifetime event is happening twice within a ...

5. Swarovski - Wikipedia

   en.wikipedia.org/wiki/Swarovski

   Swarovski (/ s w ɒ ˈ r ɒ f s k i /, German: [svaˈrɔfski] ⓘ) is an Austrian producer of glass based in Wattens in the Tyrol.It was founded in 1895 by Daniel Swarovski.. The company is split into three major industry areas: the Swarovski Crystal Business, which primarily produces crystal glass, jewelry, rhinestone, watches and accessories; Swarovski Optik, which produces optical ...

6. 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 ...

7. Minox - Wikipedia

   en.wikipedia.org/wiki/Minox

   Minox (pronounced / ˈ m iː n ɒ k s / MEE-noks) is a manufacturer of cameras, known especially for its subminiature camera.. The first product to carry the Minox name was a subminiature camera, conceived in 1922, and finally produced in 1936, by Baltic German Walter Zapp. [1]