What happens when light intersects other light?

In answer I say that light is a bunch of photons and each photon has approximately the same frequency. So when light beams converge to collide with each other, the oscillations of the colliding photons will be immediately amplified but at about the same time the amplified oscillations of the photons will revert back to their previous state.

Photons will move in the direction of their motion with almost no energy expenditure. Almost no energy expenditure is possible because photons have no rest mass and therefore no reverse reaction to their collisions according to Newton's third law.

This explanation applies not only to light but also to any electromagnetic wave.

Note: Photons maintain their energy and momentum during their propagation and interactions. When two light beams converge and their photons collide, the resulting interaction can lead to the phenomena of interference. Interference occurs when the waves align constructively or destructively, resulting in amplification or cancellation of the wave amplitudes, respectively. This behavior is a characteristic of wave phenomena, including light.

The Doppler effect is the consequence of the only exception is when photon leaves gravitational well from its source.

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