metallized reflector

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BoPET — metallized boPET film, 32 layers of 15 µm thickness each BoPET (Biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, chemical and… … Wikipedia
Luneburg lens — Cross section of the standard Luneburg lens, with blue shading proportional to the refractive index A Luneburg lens (originally Lüneburg lens, often incorrectly spelt Luneberg lens … Wikipedia
Echo satellite — The Echo satellites were NASA s first passive communications satellite experiment. Each spacecraft was designed as a metallized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off of it… … Wikipedia

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