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2. Prism (optics) - Wikipedia

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

   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. Upside down goggles - Wikipedia

   en.wikipedia.org/wiki/Upside_down_goggles

   Upside down goggles. Upside down goggles, also known as "invertoscopes" by Russian researchers, [1] are optical instruments that invert the image received by the retinas upside down. They are used to study human visual perception, particularly psychological process of building a visual image in the brain. Objects viewed through such a device ...

4. 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.

5. 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.

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

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

   March 7, 2024 at 12:38 PM. 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...

7. Where to get solar eclipse glasses, and how to make your own ...

   www.aol.com/where-solar-eclipse-glasses-own...

   You'll need the proper glasses, or risk damaging your eyes. Here's where you can buy solar eclipse glasses online and in stores in Bucks County, and how to build your own solar eclipse projector.