Which 17th century French philosopher, mathematician, scientist, and writer showed, by using geometric construction and the law of refraction, that the angular radius of a rainbow is 42 degrees?
which 17th century french philosopher, mathematician, scientist, and writer showed, by using geometric construction and the law of refraction, that the angular radius of a rainbow is 42 degrees
FreebaseQA-train-12676.P0
mathematician
mathematician
m.04s2z
people.profession.people_with_this_profession
m.06csk
rene descartes