Posted by: rid May 7, 2010
physics expert please answer this
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light is said to have a dual nature (particle and wave).

1. why does it behave like a particle when we dont observe it but like a wave when we observe it (Copenhagen interpretation of quantum mechanics)?

2. if photon is known to be fundamental particle of light..how come it has zero mass?

3. einsteins says nothing can move faster than light (c).but why does tachyons go faster?
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