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Would refraction still occur if light did not change speed when passing from medium to another?
No, refraction occurs because light changes speed when passing from one medium to another. The change in speed causes the light wave to bend, resulting in refraction. If light did not change speed, refraction would not occur.
How fast are you moving on earth standing still?
At what are called relativistic speeds (some 90% the speed of light and more), time slows down appreciably. At the speed of light, time stops. But as anything with any mass is accelerated near the speed of light, it gains mass (because the energy being put into it to move it is converted into that mass). Just so you know what 'Big Al' Einstein said.
Do you have to add the speed of an object to the speed of light?
No, because according to Einstein, there is nothing that can travel faster than the speed of light. For example, if there is a headlight on the front of a train that is travelling 60 km/h, the light coming from the front of the train is still only going at the speed of light despite the speed of the train.
The speed of light is faster in a liquid true or false?
True, the speed of light is faster in a transparent medium like water or glass compared to its speed in a vacuum. This difference in speed is due to the different refractive indexes of the medium, which affects the speed at which light travels through it.
What are the two regions of shadow?
The umbra is the central, darkest part of a shadow where no direct light reaches, while the penumbra is the outer region where some light is still visible around the edges of the shadow.
Why does the speed of light vary?
The speed of light varies because the absolute speed of light "C" is measured in a vacuum. When light travels through air, it goes slightly slower. When light travels through denser mediums still, such as glass, the speed decreases further still.
When light from a star fades is it still traveling at light speed?
Yes.
Does time stand still at the speed of light?
At the speed of light, time appears to stand still from the perspective of an observer. This is a concept known as time dilation in the theory of relativity.
Why is the light that reaches earth 2.5 million year old?
Not all light that reaches the Earth is 2.5 million years old. Light produced from a star that is 2.5 million light years away reaches Earth in 2.5 million years. Light from the sun, for example, is only 8 minutes old. Light that is reflected from the surface of the moon takes about 1.28 seconds to reach Earth.
Is it possible to attain light speed?
Only if you are a photon. In that case, you always move at the speed of light. If you're not a photon, and have any mass while you're sitting still, and are not moving at the speed of light right now, then you can never attain light speed.
What was Albert Einstein's amazing idea about the speed of light?
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).
Does darkness have a speed?
no, it is the speed of light just at a lower level of intensity. Light travels and never ends even when it hits a planet light still exist just at a lower intensity.
Is there any way to travel by light speed?
With current technology, it is not possible to even come anywhere close to the speed of light. For example, traveling at 1/10 the speed of light is still science fiction. On the other hand, for anything that does NOT travel at the speed of light, it is impossible to actually attain the speed of light. In theory you might get close. There are some particles, such as photons and the hypothetical gravitons, which ONLY travel at the speed of light.
Would refraction still occur if light did not change speed when passing from medium to another?
No, refraction occurs because light changes speed when passing from one medium to another. The change in speed causes the light wave to bend, resulting in refraction. If light did not change speed, refraction would not occur.
How does light change speed from glass to air?
In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.
What is a called when you still see light after looking at a bright light?
photoreceptor bleaching
If a plane is traveling at the speed of light and you walk to the bathroom on that plane are you faster than the speed of light?
The answer is NO. The speed of light is constant in our space-time from all reference frames. This means that going faster than the speed of light is not possible. Within a moving reference "plane", you would still see light travel across the interior, travelling at the standard rate of 300,000 km/sec. For an observer outside the plane, the speed would still appear as that constant due to time dilation.(see related link)
