Science

The ‘twin paradox’ shows us what it really means that time is relative

The 'twin paradox' shows us what it really means that time is relative
Written by admin_3fxxacau

Einstein’s special theory of relativity teaches us that time is relative. But what does it mean that time is relative? How can we live in a universe where no one can agree on when events begin, when they end, and how long they last? The infamous “twin paradox” shows what life is like in a truly relativistic world.

Simply put, Relativity tells us that moving clocks run slowly. It’s a phenomenon called time dilation, and it’s a cold, hard fact of the universe. Einstein had to introduce the concept to save something he thought was much more fundamental: the universality of physical laws. If we want the laws of physics – which also means the experience of physics – to be the same regardless of your frame of reference, the perspectives must change for observers at different speeds.


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