retrodirective reflector

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retrodirective — /re troh di rek tiv, duy /, adj. Optics. (of a mirror, reflector, etc.) having three reflecting surfaces so oriented that a ray of light is reflected in a direction parallel but opposite to its original direction. [RETRO + DIRECTIVE] * * * … Universalium
retrodirective — /re troh di rek tiv, duy /, adj. Optics. (of a mirror, reflector, etc.) having three reflecting surfaces so oriented that a ray of light is reflected in a direction parallel but opposite to its original direction. [RETRO + DIRECTIVE] … Useful english dictionary
Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… … Wikipedia
Retroreflector — Infobox Laboratory equipment name = Retroreflector caption = A gold corner cube retroreflector acronym = other names = uses = Distance measurement by optical delay line inventor = manufacturer = model = related = A retroreflector (sometimes… … Wikipedia

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