• marcos@lemmy.world
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    3 months ago

    A laser strong enough to be used as a weapon will probably not leave a lot of medium on its path.

    But the front-most part will still travel at less than c. It will just speed-up after a while.

    • sinkingship@mander.xyz
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      3 months ago

      I’m curious. What happens to the medium? Does it simply get pushed aside? Or pushed along? Or will it eat up some energy and react to something else?

      • Tlaloc_Temporal@lemmy.ca
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        3 months ago

        Much like lightning, a powerful enough laser will ionize the air. That ionized air is hot and rises, just like the ionized gasses from combustion.

        A powerful laser will look like a beam of fire.