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Speed of light questions
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Speed of light questions - 07-17-2005, 01:48 AM

A friend of mine recently told me that most people misunderstand Einstein's Relativity. He said:
  • Matter cannot reach the speed of light or surpass it.
  • Light can only travel the speed of light, not faster or slower.
  • Tachyons can only travel faster than the speed of light.
Is this right?
  
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07-17-2005, 02:37 PM

matter in the form of energy waves can travel at light speed. Relative to the aether (vacuum), the speed of light is a constant.
  
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07-17-2005, 05:51 PM

What about tachyons? Did Einstein actually refer to them or was this found out after?
  
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07-18-2005, 04:52 PM

for tachyon, please see the following website. My guess is that Einstein probably was aware of this concept since Sommerfeld was his comtemporary.

http://en.wikipedia.org/wiki/Tachyon
  
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07-19-2005, 02:49 PM

Thanks for your help.
  
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Arrow Dont mistake - 08-24-2005, 07:50 AM

Dont confuse with the Quantum Electro dynamics model of Feyman in which he says the probability of light to travel above the speed of light(c). it is a different concept.


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GOD
  
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