Posts Tagged ‘time’

Arduino Alarm Clock.

Saturday, June 12th, 2010

Lets build an alarm clock.
It has to be better than a regular alarm clocks in several ways.    The first thing is that the alarm should only sound on work days.  It should not go off on weekdays nor on days on an exception list, these are holidays, no work.
It should slowly begin making chirping noises  [...]

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Time travel to the past is impossible

Friday, June 5th, 2009

There is no way to travel back in time.  The particles that existed in the past are the same particles that exist today.  Just their location and charge and orientation and momentum have changed by interacting with other particles.
So there is no then to go back to.  Then is now, just jumbled up more.

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