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2. Prism (optics) - Wikipedia

   en.wikipedia.org/wiki/Prism_(optics)

   An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

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

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

   With sites like Amazon, Walmart, eBay and Temu flooded with counterfeit products more than ever before, it's confusing for consumers to know where to buy safe and tested eclipse glasses.

4. 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.

5. Looking to buy solar eclipse glasses last-minute? Here are 4 ...

   www.aol.com/looking-buy-solar-eclipse-glasses...

   While the majority of free glasses may be gone, there are still stores selling protective eyewear. Here's a breakdown: Where to buy solar eclipse glasses

6. Upside down goggles - Wikipedia

   en.wikipedia.org/wiki/Upside_down_goggles

   Objects viewed through such a device appear upside down and mirrored. They are constructed using sets of optical right-angle prisms, concave mirrors, or a mirror plus right-angle prisms with unequal cathethus.

7. Where to buy total solar eclipse glasses to protect your eyes ...

   www.aol.com/where-buy-total-solar-eclipse...

   Special safety glasses to protect against permanent eye damage from watching the total solar eclipse will be selling out fast as April 8 approaches, and experts suggest people buy now if they...