explain how a phpton operates and what it is, can it go back in time?

A photon is a fundamental particle of light that carries energy and momentum. It is considered the basic unit of light and behaves both as a particle and a wave. Photons are massless and travel at the speed of light in a vacuum.

Photons do not have the ability to go back in time. Time travel, as currently understood by science, is not possible for physical particles like photons. Time is considered a dimension that moves forward in a linear manner, and while some theories speculate about the possibility of time travel, it remains a concept more in the realm of science fiction than science fact.

can a tacheyon travel back in time?

Tachyons are theoretical particles that are hypothesized to travel faster than the speed of light. According to some theories in physics, tachyons could theoretically travel back in time.

However, the existence of tachyons has not been confirmed, and they are considered purely hypothetical at this point. The concept of tachyons and their potential ability to travel back in time is still a topic of debate and speculation among physicists.

It is important to note that time travel, whether through tachyons or any other means, remains a highly speculative and controversial topic in the field of physics, and there is currently no experimental evidence to support the possibility of backward time travel.