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In straight lines (well, "geodesic" might be a better term), and at the speed of light in the medium they're in.

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Riley Wolf

Lvl 13
3y ago

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How does light travel through a carvex lens?

IF you meant a convex lens - light entering the lens is bent because it's passing from one medium to another - to converge at the focal point.


Why do light rays travel in straight lines?

Light rays travel in straight lines due to the principle of the shortest path, known as Fermat's principle. Light travels along the path that minimizes the time it takes to travel from one point to another. This results in light rays following straight lines in a uniform medium.


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What is The bending of light waves as they travel from one surface to another?

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How is time travel possible with a speed more than velocity of light?

It probably ISN'T possible, since nobody has managed to travel faster than the speed of light. However, if you travel faster than the speed of light, that is equivalent to travel to the past. That is, if from one point of view you get (for example) from here to the star Toliman in a single year (light takes about 4 years), then from another point of view you'll have traveled back in time. This would let you travel back in time first from one point of view, then back in time from another point of view; as a result, you could come back to Earth (for example), in the past. For more details, check the Wikipedia article or other sources on "Simultaneity", specifically the sections on the the Special Theory of Relativity. The Wikipedia article would be "Relativity of Simultaneity".


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The speed of light can be measured using a microwave by sending a microwave signal from one point to another and measuring the time it takes for the signal to travel. By knowing the distance between the two points and the time it takes for the signal to travel, the speed of light can be calculated using the formula speed distance/time.


What time is a email from England to Singapore?

An email can travel from one point on the globe to another in a matter of seconds.


What is the length of time data takes to travel from one point on the segment to another point?

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