MuddyGrub opened this issue on May 21, 2003 ยท 43 posts
Swade posted Wed, 21 May 2003 at 8:19 PM
Man.... That is a very good question. The mathematical computation is a quantum computation; thus, is impossible on the home computer. One would need a quantum computer to figure the math required I think. "Contemporary physics states that no object should be able to travel faster than the speed of light which is: c = 299'792'458 m/s (metres per second)." Does the speed of light change in air or water?... Yes. Light is slowed down in transparent media such as air, water and glass. The ratio by which it is slowed is called the refractive index of the medium and is always greater than one*. This was discovered by Jean Foucault in 1850. When people talk about "the speed of light" in a general context they usually mean "the speed of light in a vacuum". This quantity is also referred to as c. General Relativity... Einstein went on to discover a more general theory of relativity which explained gravity in terms of curved space-time and he talked about the speed of light changing in this new theory. In the 1920 book "Relativity: the special and general theory" he wrote: . . . according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity . . . cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position. Since Einstein talks of velocity (a vector quantity) rather than speed it is not clear that he meant the speed will change but the reference to special relativity suggests he did mean so. This interpretation is perfectly valid but a more modern interpretation is that the speed of light is constant in general relativity. The problem here comes from the fact that speed is a coordinate-dependent quantity, and is therefore somewhat ambiguous. To determine speed (distance/time) you must first choose some standards of distance and time, and different choices can give different answers. This is already true in special relativity: if you measure the speed of light in an accelerating reference frame, the answer will, in general, differ from c. The Star Trek question brings to mind, along side the Star Trek Enterprise propulsion theories, the theory of Teleportation also known as particle entanglement which is at present day a realization. Electroglyph's post also touches on this subject. Particle entanglement, multi-particle entanglement, or quantum entanglement which is no longer fiction, Realized with photons only at present; but non-the-less a realization. This theory is known as particle entanglement or quantum entanglement. "A team of scientists at the Australian National University in Canberra, have managed to teleport a stream of electronic data from one laser beam to another a few feet away! The Australian team used a process called quantum entanglement. They created two entangled laser beams of light. One beam was encoded with radio data and sent over an optical fiber link, while the other laser beam was sent in another direction across the lab. At the far end of the optical fiber, the laser beam was destroyed, while the other beam was monitored to read the values of its entangled photons. Just as the data was destroyed, it showed up in the other beam! It had been teleported from one beam to the other. Eureka! It worked! In 1998, a team in California teleported a single photon (or particle of light) using subatomic physics. They generated two photons at the same point (the process of entanglement or spin) and sent them in different directions. But the Australian team is the first to achieve a 100% success rate, howbeit, they only teleported a stream of data. ~Swade~
There are 10 kinds of people: Those who know binary, and those who don't.
A whiner is about as useful as a one-legged man at an arse kicking contest.