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Theory of special relativity and general relativity | Spacetime theory

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The theory of relativity considered to be remarkable discovery in the fields of physics. Theory special relativity says - at higher speed time moves slowly and vice a versa. This is a law which has been observed by Einstein whereas time run faster where gravitational forces are less, this is general relativity . It's not relevant in our day to day life because there is nothing on earth which travels at a speed of light to understand this concept. It is essential to realize that our everyday experiences are a tiny fraction of what the universe can do. Relativity helps us understand the extreme conditions that exist in the cosmos.  Things on earth are quite slow; even a jet plane speed is too minuscule to observe this theory. Our everyday experiences don't prepare us for the strange and counterintuitive behaviors of the universe at high speeds or under intense gravity. You must be wondering then why it is considered to be so important? This theory is relevant to understand natur...