What type of highly directional microphone, commonly used on television and film sets, in stadiums, and for field recording of wildlife, was invented by Fritz Sennheiser in the 1950s?
Shotgun Sennheiser was given the Scientific and Engineering Award by the Academy of Motion Picture Arts and Sciences in 1987 for the development of the MKH 816 shotgun microphone.
Which French scientist invented the first satisfactory revolving light for use in lighthouses, and has a type of theatre light named after him?
