What are the postulates of special relativity?

The postulates of special relativity are the fundamental principles on which the theory is based. There are two postulates of special relativity: (1) the laws of physics are the same for all observers in uniform motion relative to one another, and (2) the speed of light is always measured to be the same value for all observers, regardless of their motion relative to the source of light. These postulates have profound implications, such as time dilation, length contraction, and the equivalence of mass and energy, among others. They have been extensively tested and have proven to be accurate in explaining a wide range of physical phenomena.

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