Since the ~30 years from my birth sound waves (from my first movements and cries) have travelled 325,346,400km - or about 1000 light seconds.
Light from me (my light cone) has travelled 30 light years.
Now I believe that from my frame of reference, the light has not experienced the passing of time - is that right? - but the sound has (as time slows down as one approaches light speed.
Anyway, just as light reaching us from stars light years away tells us about what has happened in the past, if we could reverse the light from my birth, in it's direction (say by a hypothetical but improbable mirror), in 30 years time we would see the event over again - and be looking back 30 years into the past.
But with the sound, if we could encode it's information into light wavicles, we would be looking only 1000 seconds into the past - or so it would seem.
It this apparent oddity explained by the faster rate at which time passed for the sound (ie. less time dilation)
2007-09-10
02:23:10
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3 answers
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asked by
bulletproofmoth
2