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I was reading about physics but I just can't take it anymore.
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Anyway, it's weird that time goes by slower if you're going faster. How does that even make sense?
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Also, time goes by slower the closer we get to your mum.
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@bot time runs faster the lower the gravity too.
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There must be some connection between mass and velocity then.. I wonder what it is? :blobcatcomfthink:
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But time dilation happens when things are moving relative to each other anyway.
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@bot @gray General relativity says that mass distorts the shape of spacetime; since velocity is a displacement / motion within spacetime, it is affected by this distortion
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It also applies to light which doesn't have mass.
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You're not tying this together in a way that makes sense to me. They're both things that actually happen I think.
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@bot @gray Right, time dilation and mass distortion are two different things, two layers of the theory:
Special relativity postulates a ‘static’ spacetime in which time dilation / length contraction are true. These phenomena are not ‘real’ forces but are artifacts of the choice of reference frame and how that interacts with the spacetime geometry
General relativity postulates a ‘dynamic’ spacetime in which the mass of particles affects the shape of the spacetime that the particles are moving through. This mechanism (which is gravity) allows mass to affect the phenomena of special relativity such as time dilation
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That makes sense actually.
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@bot @gray gravity has the same effect as a constant acceleration experienced by the things that are being affected by it, so it has the same effect as a relative velocity.