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Einstein stated in his theory of relativity that if a person could travel at least 80 percent near the speed of light, that time for that person will pass more slowly relative to time for an earthbound person. So logically, anytime I am in my car moving, time is moving slowly compare to my housebound girlfriend? So in essence will you say I am younger in terms of age relative to my girl friend's age? Will Einstein clock paradox problem apply even though I am not moving 80 percent near the speed of light. What make the speed of light so special?

2006-12-18 10:44:00 · 4 answers · asked by Anonymous in Science & Mathematics Physics

4 answers

Rest assured, nothing pertaining to time dilation and Einstein's theory of relativity can be logically or intuitively applied to everyday experiences.

The effects are so minute - Lorentz Factor T1=T/(1/sq rt V2/C2) - at speeds that are not a significant percentage of light that the real effects are literally non-existent.

For instance, if you are traveling 600 MPH on a flight to a business meeting and your girl friend stays at home, you are moving 0.166 miles per second (600/60/60). That's .00000089 the speed of light. Your watch will be slower than your girl friend's by 0.9e-12:1.
That's at 600 MPH(!) and your watch is running
0.000000000009 seconds slower than you girl friend's! (There are only about 31,536,000 seconds in a year - if your flight lasted a WHOLE year, your watch would be 0.00028 seconds slower than your girl friends!) - Imagine how insignificant this phenomenon is at 55 MPH in your vehicle. Like I said, at realistic speeds, it's nonexistent to anyone but a mathematician.

Added to complete the answer: The speed of light is "special" because it is the exact same for any observer - regardless of their motion.

2006-12-18 12:55:57 · answer #1 · answered by LeAnne 7 · 0 0

The universe consists of (matter} and energy.

Space having no mass is the vacuum.

Energy (light) travels with a constant speed in vacuum.

Consider two matters one is moving relative to the other.

“A” will say “B” is moving and he is at rest.

“A” will say “B” is moving and he is at rest.

But both will measure the speed of light as one and the same.

That is the basic nature of the energy’s speed.

After all, both are using the distance and time to measure the speed of light.

“A” who is at rest, should say that the speed of light measured by B must be high when B is moving toward a light beam and must be measured less when B is moving away from the light. But contrary to the expectations of A, B will say that he has measured the speed of light as the same as that measured by A.

Since A and B are relative motion,

“B” who is at rest, should say that the speed of light measured by A must be high when A is moving toward a light beam and must be measured less when A is moving away from the light. But contrary to the expectations of B, A will say that he has measured the speed of light as the same as that measured by A.

This is possible only if the measuring instruments, (meter scale and clock) had changed their dimensions. The meter scale should shrink in its length and the time must go slow. Simply, length and time are not absolute but they are relative.

Just like the statements ‘with respect to A, B is moving’ and ‘with respect to B, A is moving’,
the time has slowed in a moving frame with respect to the one who is at rest.

2006-12-18 20:58:38 · answer #2 · answered by Pearlsawme 7 · 0 0

TG is correct, not only has this been measured with extremely accurate atomic clocks, but it has also been shown that radioactive particles travelling at close to the speed of light decay more slowly than those at rest.

I have no doubt that the effect is real at normal speeds, just too small to measure.

2006-12-18 22:53:09 · answer #3 · answered by ZeedoT 3 · 0 0

yes, you are younger

This has been proven at much slower speeds (than 80% c) using airplanes and atomic clocks.

So while I travel from LA to DC for work, my younger wife catches up to me a bit while at home.

2006-12-18 18:47:32 · answer #4 · answered by TG 2 · 0 0

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