1. Earth Prime
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    21 Apr '07 04:45
    The speed of dark
  2. Joined
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    21 Apr '07 10:48
    We've already had that. none right yet!
  3. Joined
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    21 Apr '07 11:20
    Electric signals can be transmitted at least four times faster than the speed of light using only basic equipment that would be found in virtually any college science department.

    And that's a fact people!
  4. Joined
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    21 Apr '07 11:27
    Originally posted by Lieutenant Fatman
    Electric signals can be transmitted at least four times faster than the speed of light using only basic equipment that would be found in virtually any college science department.

    And that's a fact people!
    No, how is it possible?
  5. Standard memberDeepThought
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    21 Apr '07 12:52
    Originally posted by FabianFnas
    No, how is it possible?
    In a wave the phase velocity can be arbitarily large, the group velocity is limited by the speed of light. I assume that is what he's talking about. If not then he's just wrong.
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    21 Apr '07 13:36
    Originally posted by DeepThought
    In a wave the phase velocity can be arbitarily large, the group velocity is limited by the speed of light. I assume that is what he's talking about. If not then he's just wrong.
    Alright, because if he was right then there is a way to transmit informatin faster than light, and this is not possible due to Einstein.
  7. Joined
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    22 Apr '07 10:42
    Scientists have been able to prove for years that an electric signal can travel up to four billion kilometres per hour while at it's peak.

    But while the peak moves faster than light speed, the total energy of the pulse does not, thus meaning Einstein's relativity is preserved, so do not expect crazy-fast starships or time machines anytime soon.
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    22 Apr '07 11:05
    Again: There is no limit in speed for transmitting information?
  9. Subscribersonhouse
    Fast and Curious
    slatington, pa, usa
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    22 Apr '07 13:57
    Originally posted by FabianFnas
    Alright, because if he was right then there is a way to transmit informatin faster than light, and this is not possible due to Einstein.
    Crucify him then. It's all Einstein's fault. Till he made up his rediculous rule, things were going faster than light all the time. Then 1905 hits and the fit hit the shan.
  10. Standard memberDeepThought
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    22 Apr '07 18:481 edit
    Originally posted by FabianFnas
    Again: There is no limit in speed for transmitting information?
    It's the group velocity that counts for information and energy transfer. If you get a sufficiently strong laser and point it at the moon and move it from the north pole to the south then it's possible to get the image moving faster than light. You can find loads of these things. The EPR paradox is probably the most famous example.
  11. Joined
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    22 Apr '07 19:50
    Remember it's a joke!
  12. Joined
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    22 Apr '07 20:00
    Originally posted by DeepThought
    It's the group velocity that counts for information and energy transfer. If you get a sufficiently strong laser and point it at the moon and move it from the north pole to the south then it's possible to get the image moving faster than light. You can find loads of these things. The EPR paradox is probably the most famous example.
    Okay, then there's still no method of transmitting information faster than light. Einstein is still right.
  13. Standard memberwittywonka
    Chocolate Expert
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    22 Apr '07 22:48
    gravity
  14. Subscribercoquette
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    23 Apr '07 00:38
    a phenomenon can travel faster than the speed of light, and i don't just mean a concept. For instance, two great arcs through space interesect like scissors closing . .. the ionic photons produced and radiated, will, from a great distance away "look" like something that is traveling faster than the speed of light . . and, thus, indeed, something IS traveling faster than the speed of light . . the visual effect
  15. Subscribersonhouse
    Fast and Curious
    slatington, pa, usa
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    23 Apr '07 05:25
    Originally posted by coquette
    a phenomenon can travel faster than the speed of light, and i don't just mean a concept. For instance, two great arcs through space interesect like scissors closing . .. the ionic photons produced and radiated, will, from a great distance away "look" like something that is traveling faster than the speed of light . . and, thus, indeed, something IS traveling faster than the speed of light . . the visual effect
    But you still can't use it to send information faster than C. Not even gravity can go faster than C. Big Al proved that.
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