RADAR

(See also Aviation; Electronics; Navigation; Ships; Sonar; Sound)

automobile detectors for police radar: g85 12/8 31

effect on human body: g84 4/22 16

examples in nature: g59 4/22 15; g52 4/8 12

navigation: g62 11/22 30

signals bounced from heavenly bodies: g60 3/22 29-30; w58 502; g46 7/17 29