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Pseudomancer clearly knows whereof he speaks. I have taken (and passed) a degree course in special relativity. We cannot observe any signal moving faster than light!Īddendum for no_comply: It may suprise you to learn this, but some of us are physicists. It is true that "something" appears to move faster than the speed of light but that "something" does not carry information and it has been observed before and the fact that it happens is a direct result of Einstein's theory! In fact, the whole speed of light issue is a bit of a red herring. No comply: ( I'm leaving my response to n_c's WU in place, but bear in mind it refers only to certain bits of his article, and dates from the same time as the original debate.) From the article you reference:ĭespite the claims, there is no reason to believe that either Einstein's theory of special relativity or causality has been violated, a point that is discussed in the original paper. It's probably time Pseudomancer stepped in to clear this one up. However, there is very little experimental evidence about the propagation of gravity. It's a continuing question in physics to decide what would happen to the Solar System if the Sun were deleted. Whilst the existence of gravity as curved space-time is widely accepted, it's generally thought that perturbations in this travel at c.
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Mr.nick: I'm intrigued by the source you cite. I apologise - but it is an interesting point. TallRoo informs me that the original WU was a joke. The point is that while certain phenomena appear to be faster-than-light, information cannot exceed c. Even if the rod were perfectly inelastic, the signal would still only travel at c. I once believed this too, but consider: if I pull on the rod, how does the rod know it has been pulled? By the interaction of its component particles, interactions which are propagated at light speed. This is how real-time intergalactic communication might become realistically achievable.įunnily enough, this is all wrong. Large groups of rods, all moving together, could efficiently transmit several symbols at once. More adventurous is the prospect of pushing and pulling combined with degrees of rotation, which together give a large number of possible meanings for one movement.
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A single rod might deliver messages in Morse code. Once we want to transmit more than single bit messages, little thought is required to work out how this can be easily achieved. To overcome it, I foresee information corridors, into which craft may not fly. Any elastic material will absorb the pull, especially over very long distances. A thin one, or even a strand of strong enough material would do, so long as it was not at all elastic. Well, I think this idea could make me very rich, so I want to address these two problems now, to help overcome the doubts that the press will undoubtedly have:
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Finding enough material to construct a rod 4.3 light years long.I know, however, that there are a few problems with this idea. This idea overcomes all problems of communicating over long distances. Nothing is moving very fast at all, but a message is being delivered to Bob far faster then if it were made of light. What if we had a solid rod, 4.3 light years long? We pull our end, Bob feels the tug immediately, and feeds the fish. Clearly we need a faster way of sending Bob a signal. Now, Bob is about 4.3 light years away, so if we point a big laser at him and send a quick flash of light, the transmission time will be 4.3 years.īy then, all the fish will be dead. feed my goldfish, which are staying with him while my cockroach-infested house is being sprayed. Lets keep it simple and assume the message is a basic signal, something like a single flash of light. Lets say we want to send a message to Bob, a friend who lives near Alpha Centauri. However, I believe I have discovered a way of transmitting information over great distances instantaneously. (See Pseudomancer's phenomenal Theory of Relativity writeup for all the graphic details.) That's what light speed is, and there's no getting around it. Now, as all good citizens of the world know, nothing (even light) can be accelerated to a speed faster than the speed of light.