Doppler: Sound and Time Dilation
"The real question of government versus private enterprise is argued on too philosophical and abstract a basis. Theoretically, planning may be good. But nobody has ever figured out the cause of government stupidity and until they do ( and find the cure ) all ideal plans will fall into quicksand" - Richard Feynman ( 1918 - 1988 )
- Case 1: The ear is speeding away from the sound source faster than the speed of sound.
Result: the ear will never hear any sound since no vibration of sound will reach into the ear.
- Case 2: The ear is speeding away from the sound source exactly at the speed of sound.
Result: the ear will hear the last note of the last tone emanating from the sound source, but nothing more.
- Case 3: The ear is speeding away from the sound source at slightly less than the speed of sound.
Result: the ear will hear a series of notes but these will be entering into the ear at a slow rate.
- Case 4: The ear is not speeding away from the sound source.
Result: the ear will hear all sound notes emanating from the sound source depending also upon any sound - energy dissipation owing to distance separation.
- Case 1: The human eye is speeding away from the face of the clock faster than the speed of light coming off the clock.
Result: the human eye will never see the face of the clock or its hand movements.
- Case 2: The human eye is speeding away from the face of the clock exactly at the speed of light.
Result: the human eye will see the last photon of light coming off the face of the clock, but nothing more with the result that clock - time stops !!
- Case 3: The human eye is speeding away from the face of the clock at slightly less than the speed of light.
Result: the human eye will see a series of light photons coming off the face of the clock but these will be entering into the human eye at a slow rate.
Hence, clock - time ( and its hand movements! ) move relatively slowly. Furthermore, with different observers of photon light flying off from the face of the clock,
each of these will observe different clock - times! Yes. These differing sorts of "time" are called relativistic times.
- Case 4: The human eye is in the immediate proximate vicinity of and is stationary relative to the face of the clock and the movements of its hands.
Result: the human eye will see all photons of light coming off the face of the clock depending, of course, upon any entropic light - energy dissipation owing to great distance separation.
Clock - time and its hand movements are now proceeding at the maximum possible rate!! This is called proper time.
- Summary: Result: The further away is the clock, the slower it will move. And all the stars in the night sky are really clocks sending out different time signals ( frequencies ) depending on distances away.
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