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The theory explains the behavior of objects in space and time, and it can be used to predict everything from the existence of black holes, to light bending due to gravity, to the behavior of the planet Mercury in its orbit. Second, the speed of light is the same no matter who measures it or how fast the person measuring it is going. [Twisted Physics: 7 Mind-Blowing Findings]The implications of Einstein's most famous theory are profound.
White light is a mix of all the colors of the rainbow, but in gold's case, when light gets absorbed and re-emitted the wavelengths are usually longer.
That means the mix of light waves we see tends to have less blue and violet in it.
Meanwhile, from the electrons' perspective, the protons in both wires look like they are moving.
Because of the relativistic length contraction, they appear to be more closely spaced, so there's more positive charge per length of wire than negative charge.
Any object in a big gravity field is accelerating, so it will also experience time dilation.
Meanwhile, the astronaut's spaceship will experience length contraction, which means that if you took a picture of the spacecraft as it flew by, it would look as though it were "squished" in the direction of motion.This is because even though satellites aren't moving at anything close to the speed of light, they are still going pretty fast.The satellites are also sending signals to ground stations on Earth.Meanwhile, the protons in the first wire are creating a net positive charge, and opposite charges attract.In order for your car's GPS navigation to function as accurately as it does, satellites have to take relativistic effects into account.If you take a loop of wire and move it through a magnetic field, you generate an electric current.The charged particles in the wire are affected by the changing magnetic field, which forces some of them to move and creates the current.Thomas Moore, a professor of physics at Pomona College in Claremont, California, uses the principle of relativity to demonstrate why Faraday's Law, which states that a changing magnetic field creates an electric current, is true."Since this is the core principle behind transformers and electric generators, anyone who uses electricity is experiencing the effects of relativity," Moore said. When a direct current (DC) of electric charge flows through a wire, electrons are drifting through the material.Ordinarily the wire would seem electrically neutral, with no net positive or negative charge.To the astronaut on board, however, all would seem normal.In addition, the mass of the spaceship would appear to increase from the point of view of people on Earth.