Is Time Real?
Written by Steve Nerlich
Time is an illusion caused by the passage of history (Douglas Adams 1952-2001).
The way that we deal with time is central to a major current schism in physics. Under classicNewtonian physics and also quantum mechanics – time is absolute, a universal metronome allowing you determine whether events occur simultaneously or in sequence. Under Einstein's physics, time is not absolute – simultaneity and sequence depend on who's looking. For Einstein, the speed of light (in a vacuum) is constant and time changes in whatever way is required to keep the speed of light constant from all frames of reference.
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