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330 m/s
Green Tremblay
Wiki User
∙ 10y agoThe speed of light. Remember that the reference value of the speed of light only applies in a vacuum. When light passes through any substance, the speed of light decreases. Electricity travels down a wire at near the speed of light.
The Speed of electricity refers to the relatively slow movement of free electrons or ions through a conductor in the presence of an electric field, also known as drift velocity. It is often confused with the propagation speed of an electromagnetic wave. It is the electromagnetic wave that can carry information (data), not the movement of electrons.
Free electrons in a conductor vibrate randomly, but without the presence of an electric field there is no net velocity. When a DC voltage is applied the electrons will increase in speed proportional to the strength of the electric field. These speeds are on the order of millimeters per second. AC voltages cause no net movement; the electrons "wiggle" back and forth in response to the alternating electric field.
In contrast, electromagnetic wave propagation is much faster, and depends on the dielectric constant of the material. In a vacuum the wave travels at the speed of light and almost that fast in air. Propagation speed is affected by insulation, such that in an unshielded copper conductor it is about 96% of the speed of light, while in a typical coaxial cable it is about 66% of the speed of light
Wiki User
∙ 13y agoLight is just something within the Electro-magnetic spectrum. Many other things move at the speed of light etc. Gamma Rays and Microwaves. Only a section of it is visible being light. These all fall under Electro-magnetic radiation. Therefore light in a type of electro-magnetic radiation.
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What happens when light passes into a material where the speed of light is lower?
It moves at a slower speed!
What happens to an object when it moves at the speed of light?
when the particle moves with the speed of light,the mass of the particle increases to infinity.... this is as per Einstein's theory of relativity....n its true.... some people say the mass decreases to zero when the particle travels with the speed of light....they are "INSANE"
What moves faster light or speed waves?
matter waves as waves travel faster.. however you must know that we assume this condition to balance the Kinetic energy and energy of a photon according to plank's quantum theory and have no experimental proof about it :)
What percentage of the speed of light in vacuum is the speed of light in water?
When light with wavelength of 589 nanometers moves through water at the temperature of 20° C, its speed is 75% of the speed of light in vacuum.
Is it true or false that a gamma ray is a very high-speed particle with no charge?
True. A gamma ray is a high-energy photon, and thus moves at the speed of light. And, like all photons, it has no charge.
What is the average speed of energy?
There is no single answer. Electromagnetic energy moves at the speed of light, about 300,000 km/sec. Acoustic energy moves at the speed of sound in whatever medium you are using. Kinetic energy moves with the speed of the moving body. Thermal energy moves through a conducting body at various speeds, depending on how well the material conducts heat. So energy as a general term does not have a specific speed.
What is the difference between speed and light?
Speed is how fast something moves. Light is a form of energy carried by massless photons, these photons move at the speed of light, which is the fastest speed that anything in the universe can travel.
What does the phrase the speed of light mee?
It means the speed at which light moves. While it may seem that light advances instantaneously, in fact it does not - it moves at a speed of 300,000 kilometers per second. That's the speed in a vacuum; in other substances, it moves slower. For example, in glass or water it moves at about 2/3 of the speed it has in a vacuum.
What type of energy wave moves the fastest?
Some kinds of waves move at the speed of light - notably light itself, and other electromagnetic waves.
How do you travel as fast as the speed of light?
you do not; it would take way too much energy to do this because your mass is so great. Small subatomic particles can be accelerated to close to he speed of light and they require a lot of energy from a particle accelerator. Nothing can reach the speed of light as it would take an infinite amount of energy
What happens when light passes into a material where the speed of light is lower?
It moves at a slower speed!
Light from a star travels from earth in a straight line at a constant speed of 300000 kilometers per second What is the acceleration of the light?
The speed of light is a constant, so the acceleration is zero. However, light IS affected by gravity, and gravity causes an acceleration. How does this balance? The light moves at the same speed - the speed of light, abbreviated "c" - but loses or gains energy as the light moves toward or away from the gravity source. In gaining energy (without speeding up!) the frequency of the light is increased and the wavelength of the light (or any electromagnetic energy) is decreased, In losing energy, the wavelength is increased and the wavelength decreased. This could be a trick question, of course. Light from a star wouldn't be travelling from earth, unless we are talking about reflected light, which would not be particularly intense, but it is not out of the question.
An object moves in light speed will shred its mass?
An object that normally doesn't move at light speed (so, this doesn't include photons for example) CANNOT move at the speed of light. As it approaches the speed of light, its mass will get higher and higher (and tend towards infinity); as will the energy required to continue speeding it up.
What happens to the speed of light as it moves from water into air?
The speed increases.
Is the time relative Then if life is a form of energy and if it is moving with a speed greater than that of light then does the world that you live now is actually in past?
Life is NOT a form of energy, and NOTHING known moves with a speed greater than that of light.So your answer is no!
Does a photon move at the speed of light?
Yes, a photon moves at the speed of light, because photons have no mass.
What happens to an object when it moves at the speed of light?
when the particle moves with the speed of light,the mass of the particle increases to infinity.... this is as per Einstein's theory of relativity....n its true.... some people say the mass decreases to zero when the particle travels with the speed of light....they are "INSANE"
