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About torch light traveling

  1. Jul 6, 2015 #1
    Why we do not see a touch light from a distance of 1 km.
  2. jcsd
  3. Jul 6, 2015 #2

    Vanadium 50

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    Touch light? Trouch light? I don't understand what you are talking about.

    If you mean "torch light", as in "flashlight", the answer is "we do".
  4. Jul 6, 2015 #3
    yes sir, torch light as "flashlight" . how far it could travel ?.

    With regards
  5. Jul 6, 2015 #4


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    The light travels until it is absorbed by something. At great distances the light has either spread out so much or enough has been absorbed that the intensity is too low to detect it with your eyes.
  6. Jul 7, 2015 #5
    Thank you.
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