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Contents:


  1. Does light experience time?
  2. Related Stories
  3. Special Theory of Relativity
  4. Recommended for you
  5. Does light experience time?

If we want to travel to some distant point in space, and we travel faster and faster, approaching the speed of light our clocks slow down relative to an observer back on Earth. And yet, we reach our destination more quickly than we would expect. Sure, our mass goes up and there are enormous amounts of energy required, but for this example, we'll just ignore all that.

If you could travel at a constant acceleration of 1 g, you could cross billions of light years in a single human generation. Of course, your friends back home would have experienced billions of years in your absence, but much like the mass increase and energy required, we won't worry about them. The closer you get to light speed , the less time you experience and the shorter a distance you experience. You may recall that these numbers begin to approach zero.

Does light experience time?

According to relativity, mass can never move through the Universe at light speed. Mass will increase to infinity, and the amount of energy required to move it any faster will also be infinite. But for light itself, which is already moving at light speed… You guessed it, the photons reach zero distance and zero time. Photons can take hundreds of thousands of years to travel from the core of the Sun until they reach the surface and fly off into space. And yet, that final journey, that could take it billions of light years across space, was no different from jumping from atom to atom.

How long does it take sunlight to reach the Earth? Here's a question… how long does it take sunlight to reach Earth?

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This sounds like a strange question, but think about it. Sunlight travels at the speed of light. Photons emitted from the surface of the Sun need to travel Since black holes are the most powerful gravitational spots in the entire Universe, can they distort light so much that it actually goes into orbit?

And what would it look like if you could survive and follow light in this Quantum particles can be divided into two types: When cooled down to near-absolute zero temperatures, bosons can condense together into a collective state of matter called a Bose-Einstein condensate where The recent news of neutrinos moving faster than light might have got everyone thinking about warp drive and all that, but really there is no need to imagine something that can move faster than , kilometres a second. A pair of researchers, one with the Langevin Institute, the other a company called Greenerwave, both in France, has developed a way to use ordinary Wi-Fi signals to perform analog, wave-based computations.

Complexity in nature often results from self-assembly, and is considered particularly robust. Compact clusters of elemental particles can be shown to be of practical relevance, and are found in atomic nuclei, nanoparticles The history of our climate is written in ice. Reading it is a matter of deciphering the complex signals pulled from tens of thousands of years of accumulated isotopes frozen miles below the surface of Antarctica. The development of spintronics depends on materials that guarantee control over the flow of magnetically polarized currents. However, it is hard to talk about control when the details of heat transport through the interfaces Magnetic field lines tangled like spaghetti in a bowl might be behind the most powerful particle accelerators in the universe.

That's the result of a new computational study by researchers from the Department of Energy's The gravitational waves created by black holes or neutron stars in the depths of space have been found to reach Earth.

Special Theory of Relativity

Their effects, however, are so small that they can only be observed using kilometer-long measurement facilities. Please sign in to add a comment. Registration is free, and takes less than a minute. April 15, Here's a question… how long does it take sunlight to reach Earth?

Hypnose - Time - Light [HQ Free]

Using Wi-Fi signals to perform analog, wave-based computations December 14, A pair of researchers, one with the Langevin Institute, the other a company called Greenerwave, both in France, has developed a way to use ordinary Wi-Fi signals to perform analog, wave-based computations.

Adjust slider to filter visible comments by rank. I hate to be the first to comment, since its gonna be pretty negative. Science for the masses - I'm all for it - as long as its well done. The video is longer than the text for some odd reason , and contains more groaners. MODERN Physics no longer considers the increase in energy as an object increases its speed kinetic energy to be an increase in mass. Mass is rest mass or for systems of objects, intrinsic mass , this is a change in terminology rather than the Physics.

The benefit of this approach is that mass is speed invariant, a property of an object regardless of its apparent motion.

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Cain makes a mess concerning time and distance. What does it mean to "experience" distance? Obviously, nothing - its anthropomorphization gone wild. He claims that a photon becomes part of an atom in the Sun as if it continues to exist.

From the point of view of someone travelling at c the entire universe is 2 dimensional. Subejtively no time passes between launch and arrival. Distance is speed times time - and anything times zero is zero.


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This is especially freaky in the case of a photon travelling towards a destination that it might never reach as seen by an outside observer e. There's couple related freaky things about photons: That means nothing can affect a photon en route which I take to be a beautiful way to show that photons that meet must superpose rather than interact. It makes sense to me that the carrier of causality should by neceesity itself be acausal.


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Its the Energy 'contained' in a photon which takes tens or hundreds of thousands of years to move from the Sun's Core to its Corona, not the photons. Assigning a single identity to a series of photons is an error in thinking. While its true that if you could accelerate at 1 g for 21 years of your time , you could theoretically travel 1 billion light-years relative to Earth , but this is impossible based on known physics.

The amount of energy required for acceleration would be cosmologically enormous, impact with a single particle of dust would vaporize you among other problems plus you would be traveling at Photons reach zero distance? This is another mash-up. It doesn't MEAN anything to be in the rest frame of a photon.

Does light experience time?

Photons DO travel distances relative to us , there is no way to measure anything relative to them. Could all things--even massive, slow-moving particles--be made of particles which do move at the speed of light maybe for just short distances repeatedly? It would seem that that would leave no time or space at the particle level. To experience time, you need to have an inherent, regularly proceeding system and something that acts like a memory to verify that so much change has occurred in the inherent system. For example, a clock oscillating, and then, something keeping score of how many times it oscillates.

Traditional "science" does not recognize any internal structure to the photon. But, Maxwell's definition of light is a pair of mutually enhancing magnetic and electrostatic fields, the electrostatic field giving rise to the magnetic field, the magnetic field giving rise to the electrostatic field, the electrostatic field giving rise to the magnetic field that gives rise to the electrostatic field. It seems photons so have oscillating internal structures , another demonstration that "relativity" is a fraud.

I am a layman and I'm not going to repeat what has already been posted, I agree that this article is less than useless Just imagine that ' Either this might end up as a BH or such a mass would spread throughout It's almost as fun as quantum mechanics. The one thing the guy said that is absolutely correct is that relativity can be a mind bender.

A calculation of light-time correction usually involves an iterative process. An approximate light-time is calculated by dividing the object's geometric distance from Earth by the speed of light. Then the object's velocity is multiplied by this approximate light-time to determine its approximate displacement through space during that time. Its previous position is used to calculate a more precise light-time. This process is repeated as necessary. For planetary motions, a few 3—5 iterations are sufficient to match the accuracy of the underlying ephemerides.

He found that the interval between eclipses was less when Earth and Jupiter are approaching each other, and more when they are moving away from each other. He correctly deduced that this difference was caused by the appreciable time it took for light to travel from Jupiter to the observer on Earth. From Wikipedia, the free encyclopedia. Calculation [ edit ] A calculation of light-time correction usually involves an iterative process. References [ edit ] P.

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