Question

Explain why is necessary to specify a minimum time?

Answer 1

In physics, it is necessary to specify a minimum time because of the uncertainty principle. The uncertainty principle states that the more precisely the position of a particle is known, the less precisely its momentum can be known, and vice versa. This applies to time and energy as well, in that the more precisely the energy of a particle is known, the less precisely its time can be known. Therefore, in order to make meaningful measurements and calculations, it is necessary to specify a minimum time interval that represents the limit of our ability to know both the energy and time of a particle simultaneously.