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2. Celestron - Wikipedia

   en.wikipedia.org/wiki/Celestron

   Celestron was the first large scale commercial manufacturer of the Schmidt-Cassegrain telescope, introducing its "C8" 8" diameter 2032 mm focal length, ƒ10 telescope in 1970. [7] The primary innovation Celestron/Tom Johnson devised was a method to produce Schmidt corrector plates using a vacuum to pull the glass blanks into a pre-shaped curve ...

3. Binoculars - Wikipedia

   en.wikipedia.org/wiki/Binoculars

   8×42 roof prism binoculars with rainguard and opened tethered lens caps. Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.

4. Nature Reviews Physics - Wikipedia

   en.wikipedia.org/wiki/Nature_Reviews_Physics

   Nature Reviews Physics is a monthly peer-reviewed scientific journal published by Nature Portfolio. It was established in 2019 as an online-only journal. It was established in 2019 as an online-only journal.

5. Our Mathematical Universe - Wikipedia

   en.wikipedia.org/wiki/Our_Mathematical_Universe

   Professor Max Tegmark, author of Our Mathematical Universe. Our Mathematical Universe: My Quest for the Ultimate Nature of Reality is a 2014 non-fiction book by the Swedish-American cosmologist Max Tegmark.

6. 5.8×42mm - Wikipedia

   en.wikipedia.org/wiki/5.8×42mm

   The Chinese armaments industry and the Chinese military were informed about the developments and experience that the US armed forces had during the Vietnam War with the M16 rifle and its 5.56×45mm M193 ammunition – not least because of the arms aid for Vietnam, as a result of which there was a high probability that captured US small arms and ammunition reached China.