How do we know time exists and isn’t just an imaginary measurement?
In: Physics
Time exists because things change. If you roll a ball down a ramp it changes position over time. It can only do that if there is time.
The measurement of time is made up. We just picked something conveient that everyone could agree on so when we talk about time everyone has the same idea.
At first it was just dividing the time it takes for the Earth to spin. Now it’s based on a something that happens very quickly to an atom that we can count.
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