Electricity.
Sound, whether in air, water or a solid such as steel, is a compression wave that moves atoms back and forth. It is slow. In air, the speed of sound is 343 meters per second (1,126 ft/s), or 1,236 kilometers per hour (768 mph). It takes 3 seconds to travel one kilometer or 5 seconds to travel one mile. It is 4 times faster than that in water and almost 15 times faster in iron.
Electricity involves the motion of electrons, very small and light with a significant long range Coulomb force between them. Electricity can be pictured as moving electrons which push against their neighboring electrons that in turn push against more distant neighboring electrons and this all continues for distances much much greater than the region occupied by a single electron. In some ways, this propagation by pushing against the neighbors is basically similar for both electricity and sound. But, for electricity the masses of the moving electrons are much much smaller than the masses of atoms and forces on electrons are longer ranged and strong.
Electrical disturbances on a conductor travel at almost the speed of light, but depends on the geometry of the conductor. For normal wires and normal electrical current such as used by people in everyday life, the speed can be over 95% of the speed of light. The speed of light is 300,000 kilometers per second. For other arrangements of conductors (waveguides) it can be much slower and a speed of 200,000 kilometers per second would not be surprising.
One is not far off if one says that the speed of light is 1 million times faster than the speed of sound.
light is obviously faster than the speed of sound
The speed of light is faster than the highest speed of a car.
According to the Theory of Relativity, nothing can go faster than the speed of light. And since light is information, it cannot go faster than the speed of light.
NO.... the speed of light is always faster. =)
The speed of light is about 880 thousand timesfaster than the speed of sound.
speed of light
The speed of light.
Light.
The speed of knowledge/information travels faster than the speed of light.
The speed of light is faster than the highest speed of a car.
No. The Concorde flew faster than the speed of sound. Nothing can move faster than the speed of light.
Travelling faster than the speed of light is not possible, therefore no galaxies have travelled or are travelling faster than the speed of light.
According to the Theory of Relativity, nothing can go faster than the speed of light. And since light is information, it cannot go faster than the speed of light.
Light is faster because speed does not move. Speed is a measure of the rate of movement but, in itself, it does not move - at all!
NO.... the speed of light is always faster. =)
Nothing travels faster then the speed of light (according to our understanding of physics)
No, not quite. We know that for sure, because nothingmoves faster than the speed of light.
The speed of light is about 880 thousand timesfaster than the speed of sound.