obtain information about the special goggles used to watch the solar eclipse
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Solar viewer (also known as solar viewing glasses or solar eclipse glasses) are special eyewear designed for direct viewing of the Sun. Standard sunglasses are unable to filter out eye damaging radiation. ... The recommended optical density of this eyewear is 5.
Special goggles to watch the solar eclipse are typically made of glass, plastic or some kind of poly-carbonate material, while solar filters are made of one of two materials: polyester film coated in aluminum, or something called "black polymer
These special goggles are made of black polymer, which is a flexible resin that is infused with carbon particles. Because of the strength of black polymer, solar eclipse glasses block all ultraviolet rays and nearly all visible light.