2006-09-16 07:50:27 · 5 answers · asked by Abhinav Kumar 1 in Science & Mathematics ➔ Physics
The visual image travels at the speed of light all the way from the source to your eye. The audio signal travels at the speed of sound (much slower than the speed of light) from the source to the microphone (usually very close) and from your television speakers to your ears. It travels at the speed of light for the rest of its trip. Unless the TV stations compensate for this by delaying the video signal, it is true that the audio will reach your ear about a hundredth of a second later than the visual. But then, if you were seeing it live, the same would be true. That's not enough delay to be noticeable. But if you're in the back of the balcony at a concert, you can easily notice the delay between seeing and hearing the cymbals crash.
2006-09-16 18:40:54 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋
It is true that Light and Sound sources travel at vastly different speeds, this isn't how Television is created. Television works by first taking the recorded image and sound, and changing it into data. This is then sent through various sources (cables, satellites, transmission towers etc.), before it reaches your Television. The signal is then decoded again and recreated on your Television set.
2006-09-16 07:56:52 · answer #2 · answered by Maxx Power 3 · 1⤊ 0⤋
The sounds and images are reduced to digital signals and transmitted electrically, so there iis no difference in speed.
2006-09-16 07:54:45 · answer #3 · answered by eferrell01 7 · 2⤊ 0⤋
u r right although speed of both is different but our distance from the tv is not large hence for us they seem to be same,if u sit miles away from tv then u will realize the difference!
2006-09-16 20:51:54 · answer #4 · answered by bhaumik r 1 · 0⤊ 0⤋
agree with Maxx Power
2006-09-16 08:05:04 · answer #5 · answered by doctor asho 5 · 0⤊ 0⤋