Light some interesting questions and an observation

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The discussion revolves around fundamental questions about light, including its behavior when not traveling, its speed, and its interaction with particles. Key points include that light always travels at the speed of light (C) and cannot be destroyed, only absorbed, transferring energy to particles. The conversation also touches on the relationship between speed, mass, and time, questioning whether increased mass affects photon interactions. Participants emphasize the importance of established theories like Maxwell's equations and quantum electrodynamics (QED) in understanding light, while also acknowledging the ongoing complexities and confusions surrounding these concepts. Overall, the dialogue highlights the need for deeper exploration and education in the field of light and electromagnetism.
  • #61
For animations/simulations of electromagnetic fields you can try http://www.vectorfields.com/".
 
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  • #62
trogan said:
7. Where does it end up ?
Tony

It seems to me that, unless absorbed by a particle, light will end up at the edge of the universe. Could it then be converted to space thus causing the expansion of the universe ? (and incidentally indicating that space is base state energy). Thus the breakdown of matter would be fueling the expansion of the universe. Which would be increasing over time if the number of stars in the universe is increasing.

Actaully, it seems better to say that the light is converted into an expansion force that is applied to the edge of the universe and this is the way the universe expands.
 
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