What happens when two photons approach each other?

However, two photons heading towards each other can indeed collide indirectly. The process goes like this. The anti-electron from one photon will collide with an electron from the other photon, and turn back to light. The same thing happens to the other anti-electron and electron.

What is the relative velocity between two photons Travelling in opposite direction?

Thus, the relative velocity of a photon with respect to another photon will be equal to the speed of light when they are going in opposite directions.

What happens when two photons meet?

If two photons head towards each other and they both turn into electron/anti-electron pairs at about the same time, then these particles can interact. The anti-electron from one photon will collide with an electron from the other photon, and turn back to light.

What will be the relative velocity of two photons approaching each other?

Originally Answered: If two photons approach each other, what is their relative velocity? The relative velocity of photons is zero. The speed of light (the exchange rate) between space and time, has to be set at 1.

Can photons carry information?

Individual photons can carry information in two ways: each photon has a frequency, and a polarization. Both of these are intrinsic properties of photons, unrelated to mass. A stream of photons can carry information through variations in the frequency of the photons emitted by a particular source over time.

What is the speed of a photon with respect to another photon if?

According to special theory of relativity, the speed of one photon with respect to another photon is equal to speed of light, but common sense says all the photons of light emitted simultaneously from a light source should travel at same speed.

When two objects are approaching each other then relative velocity is?

If two objects are moving in opposite directions, the magnitude of relative velocity of one object with respect to other is equal to the sum of the magnitude of their velocities.

What is length contraction in relativity?

Length contraction is the relativistic phenomenon where the length of a moving object is measured to be shorter than in its rest frame. It occurs only in the direction of motion, and its effect is significant only when the object is moving at speeds close to the speed of light.

How does a photon carry color?

Unlike an electromagnetic wave, a photon cannot actually be of a color. Instead, a photon will correspond to light of a given color. As color is defined by the capabilities of the human eye, a single photon cannot have color because it cannot be detected by the human eye.

What happens when two photons of different energies come near each other?

If we have two photons each with energy E / 2, then if they get near each other we might get creation of a charged particle where this would not have happened with any one of those photons alone. It takes a lot of energy for this to happen. To create an electron you need a photon with a wavelength of

How do photons interact with gravity?

In short, photonsperfectly interact with gravity(or, if you like it more, with still hypothetical gravitons). It includes planar EM waves (i.e. photons traveling in parallel directions), because the stress–energy tensor is non-zero.

Is there an inertial frame in which either photon is at rest?

There is no inertial frame in which either photon is at rest so the question is not well defined. If two photons ( A and B ) are traveling in opposite directions from a point in a vacuum will the relative speed of photon A to photon B be grater then C?

What does a third observer see a photon?

The separation distance as seen by a third observer for the two photons, would be increasing at a rate of 2c. However, there is no way to go into the frame of reference of a photon, so you can’t say what “photon A” sees, or what “photon B” sees. The relative speed of photon A to photon B is undefined.

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