Chiune Sugihara, a Japanese diplomat who defied government orders and saved the lives of thousands of Jews.
How Fighter Jets Lock On: The primary technology that a military aircraft uses to lock and track an enemy aircraft is its onboard radar. Aircraft radars typically have two modes: search and track.
The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.
Saw a nice video editing method that bends time and space in slow motion.