This Hubble site website provides two movies about galaxy collisions. The first movie called "Cosmic Collision" details the collision of the Milky Way and the Andromeda galaxy. The second movie, "Striking Encounters",...
This web site contains four animated tutorials that demonstrate different astronomy concepts. These include: Lunar Phases shows how the motion of the moon relative to the Earth and Sun change the appearance of the moon;...
Nick Reeder from Sinclair Community College created this interactive tool to compute with phasors when you're analyzing AC circuits. The phasor calculator allows you to add, subtract, multiply, or divide phasors. Use E...
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