In that case, the ray of light would not be bent when going from one substance to another. It would be the same as if the substance remained in the same substance, for example, air. Refraction depends on the index of refraction, which is directly related to the speed of light in a substance - and not on any other physical characteristic of the substance.
How absorption and scattering can affect a beam of light is if the beam of light is farther away from an object, the light would be dimmer. But, if the beam of light was closer to the object, then the light would appear brighter.
You can't travel at the speed of light. Accelerating a finite mass to lightspeed requires an infinite amount of energy.If you were traveling at nearly the speed of light, relativity says the beam of light from the torch would appear to you to be traveling just as fast as it would if you were standing still.Uh, it's a bit academic, but in reality there's nothing that says a mass can't travel faster than light. While it's true that a mass can't be accelerated to the speed of light from any lesser velocity, it doesn't rule out masses that might always have had a velocity greater than the speed of light.
Sorry we do not know what it is you are asking.
Because it slows down when entering water.
A light beam or beam of light is a narrow cone of light energy radiating from a small source. In optics, a ray is an idealized narrow beam of light.
The speed of light in air is approx 299,700,000 metres per second. This is not very different from its maximum speed which is its speed in vacuum: 299,792,458 metres per second. The fact that the beam emerges from water is irrelevant.
Why is the speed of the electron beam greater than the speed of light in cathode ray oscilloscope.
That, no matter who measured the speed of a beam of light, the result would be the same. In other words, someone travelling at 99% the speed of light would measure the same speed as someone standing still (all realtive to the light source).
the speed of light never changes but when the light beam goes from air to water, it refracts. this is when the light beam alters direction because it hits an object of greater or less density (in this case it is higher).
at the speed of light
The same as the speed of light
How absorption and scattering can affect a beam of light is if the beam of light is farther away from an object, the light would be dimmer. But, if the beam of light was closer to the object, then the light would appear brighter.
How absorption and scattering can affect a beam of light is if the beam of light is farther away from an object, the light would be dimmer. But, if the beam of light was closer to the object, then the light would appear brighter.
A plane CAN'T travel at the speed of light.If a hypothetical super-spacecraft goes very close to the speed of light, and a beam of light is emitted from the spacecraft in the "forward" direction, the speed of the beam of light from the spacecraft would be measured to be the so-called "speed of light", i.e., 300 million meters per second. Note that the speed of this beam of light, as measured from Earth, would ALSO be 300 million meters per second. This seems weird, or even impossible, but it has been confirmed by the famous Michelson-Morley experiment, and explained by the Special Theory of Relativity.
Water will bend a beam of light. Try this put a stright pincil in a glass of water. The pencil is still stright but looks bent. The water is bending the beam of light.
How absorption and scattering can affect a beam of light is if the beam of light is farther away from an object, the light would be dimmer. But, if the beam of light was closer to the object, then the light would appear brighter.
If a beam of light strikes a perfect black body, it will be absorbed and, therefore, you will have been able to "stop light in air" as was asked. If your question is about stopping the beam and holding it in place in some way, you cannot. The speed of light is a constant, and will be found to be the same in any inertial frame. If you could measure the speed of a beam of light and were moving "along side" the beam to measure its speed, you'd find it a constant no matter how fast you were moving. Stopping a beam of light in air is not something that can be done as asked.