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The speed of light is constant.

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14y ago

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What is the theory of relitivity?

The theory of relativity, proposed by Albert Einstein in the early 20th century, consists of two main parts: special relativity and general relativity. Special relativity deals with the relationship between space and time, showing that they are intertwined in a four-dimensional spacetime continuum. General relativity extends this to include the effects of gravity, explaining how massive objects curve spacetime and create the force of gravity. This theory has revolutionized our understanding of the universe and has been confirmed through numerous experimental observations.


What did albert einstein say about light?

Albert Einstein proposed that the speed of light is constant in a vacuum and that light can behave as both a particle and a wave, known as wave-particle duality. He also introduced the theory of relativity, which revolutionized our understanding of time, space, and gravity.


What can you say about the speed of the different colors light in air?

I could say that shorter wavelengths move faster, but that would be wrong. The truth is that all wavelengths/colors travel at the same speed.


How by moving at the speed of light you can travel in future?

The laws of physics say you can't travel at the speed of light. It's impossible. You can get arbitrarily close, but accelerating an object with a rest mass to the speed of light in a vacuum would take an infinite amount of energy.I'm going to recommend a couple of books to you that may answer what you were trying to ask. Obviously most modern physics texts are going to discuss relativity to some extent, but the Feynman Lectures on Physics is a good investment if you're interested in physics generally. Alternatively, for a more readable explanation that's not as rigorous, the Mr. Tompkins books by George Gamow attempt to explain what the world would be like if certain physical constants were different... in particular, in one he shows what it would be like if the speed of light in a vacuum was around 60 miles an hour. Finally, you might try Geometry, Relativity, and the Fourth Dimension by Rudy Rucker if you can find it at your local library.


If you can travel at velocity of light then what happens to time?

If I pass you at the speed of light, then: -- I see my wristwatch moving normally; but you look at it as I pass you, and you say that my watch is not moving at all. -- You see your wristwatch moving normally; but I look at it as I pass you, and I say that your watch is not moving at all. You probably want to know what happens to "real time". I'm really delighted to be able to say that there's no such thing. Just like everything else, it's all relative, and depends on the relative motion of the observers.

Related Questions

What is the speed of light per planet?

The speed of light is the same for every observer everywhere. That is a fundamental tenet of the theory of special relativity (and everything based on it, such as the general theory of relativity and quantum field theory). To date no violation of the consistency of the speed of light has been measured. By the way, this does not say the speed of light is the maximum speed, just that the speed of light is constant, so the possible discovery of faster-than-light neutrinos does not invalidate this.


What does the theory of special relativity say about the equivalence of different frames of reference?

It says that the speed of light in a vacuum measured in any inertial frame of reference is equivalent to the speed of light in a vacuum measured in any other inertial frame of reference.


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"


Is anything has more speed than speed of light?

no, according to Einstein with his theory on relativity. The speed of light is what a lot of scientist say is the speed limit of the cosmos. In particle accelerators they can accelerate small pieces of matter close to the light speed but can never reach it. If you were to travel until you hit light speed it would require all the energy in the whole universe or you could say it would take an infinite amount of energy to reach light speed. The only way around this is the Einstein-Rose bridge otherwise called a wormhole. This is a possibility according to Einsteins equations.


Why do people say faster than the speed of light?

Light travels at approximately 186,000 miles per SECOND. That is fast. So the expression "faster than the speed of light" is used to describe someone or something that is really fast (but it's not actually faster than speed of light)


Is it possible for a human to move quicker than the speed of light therefor aging more quickly?

No, a human being cannot travel faster than the speed of light. In fact, according to the Special Theories of Relativity state that it would take an infinite amount of energy to accelerate to light speed, meaning that it is impossible for ANY particle to accelerate to light speed. As for the aging idea, this is just a bit of science fiction. However, the Special laws say nothing about particles constantly moving at light speed, which is where special particle called "tachyons" come into play. Finally, some hypothetical "transversal wormholes" may exists, where two points in space are directly connected, despite great distances, allowing theoretical motion much more quickly than light would take to travel the same distance normally, giving the effect of faster than light travel without ever actual exceeding the speed of light. Again, this is purely theoretical. Further more, the "speed of light" to which you refer is the speed of light in a vacuum. Having a particle actually move faster than light is possible when the light in question is traveling through a medium which slows it down, and not contradict the special laws.


Did Albert Einstein say it was possible to go to the speed of light?

No, Albert Einstein suggested the idea of travelling at the speed of light and what would occur to physical properties, which lead him to special and general relativity. However, he never said it was possible to do so. Quite the opposite actually, he discovered that as an object travels faster and faster through space, it requires more and more energy to go even faster, to the point that if an object were to travel onward to the speed of light, it would require all of the energy in the universe to push it to that speed. It's also known as relativistic mass.


What is the relationship between the velocity of propagation in a t.t.l and the speed of light?

I don't know what a t.t.l is but I do know that the propagation of the speed of light compared to velocity is explained in Einstien's Special Theory of Relativity. It basically states that as an object approaches the speed of light, distance becomes greater, and time slows down (compared to an object at rest). Unfortunately, there is no way to truly tell if you are at rest. Sure you can say that you are at rest if you are standing still but realize that the Earth is moving through the galaxy at some 30,000 mph at this very moment. The reason for the change in time and space is that the speed of light is constant, no matter how emitted or recorded. This means that light will travel at the speed C even if you are moving at C/2 to begin with. someone approaching you at the same speed will witness the light pass them at the speed C. Someone else standin still (compared to the other two) will also witness the light pass by at the speed C. Get the point? If you need more information just read Einstiens relativity book on the special and general theory; it's tough reading, but it explains everything.


What propels light to the speed of light?

Nothing propels it at all. It actually always goes that fast, even from its creation. To explain it to you mathematically would require the use of 4-D tensor products, so I won't bother with that here. Suffice it to say, that is one of the postulates of Einstein's general relativity. Light always travels at the same speed in any reference frame.


Based on the theory of relativity what must always be conserved?

It depends on which theory of relativity you mean. The special theory of relativity has only one assumption, namely that the speed of light is constant (in vacuum!) and has the same value for each non-accelerating observer. Thus you can say the speed of light must always be conserved. In the general theory of relativity (the one with the curved spacetime and the geometric picture of gravity), one further assumption is made; that the inertial mass (resistance to acceleration) of every object is equal to its gravitational mass (source of gravity). This is called the Equivalence Principle and is sometimes explained as the requirement that all things fall at the same rate (if there is no air resistance) regardlass of mass. In this theory the equivalance of the two types of mass is always to be conserved. Also note that although these are the main assumptions it is usually also assumed that energy and momentum are conserved and that there is no violation of causality.


What is the speed of light and the speed of magnetism?

so Im just going to straight up say use google but also I'm going to say the speed of sound is faster than the speed of light and magnetism is was slower.


What does it mean to say that the speed of light is a constant?

Saying that the speed of light is a constant means that light travels at the same speed, approximately 299,792 kilometers per second (or about 186,282 miles per second), in a vacuum, regardless of the observer's motion or the source of the light. This constancy is a fundamental principle of Einstein's theory of relativity, influencing our understanding of space, time, and the structure of the universe. It implies that the laws of physics are the same for all observers, leading to phenomena like time dilation and length contraction.