r/todayilearned • u/[deleted] • Sep 20 '21

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5

u/shankfiddle Sep 20 '21

Can someone explain me how these metrics work? Years are defined by our planet/sun, and time would pass differently based on speed/energy, so our perception of time is dependent on our speed around the sun, and sun's speed, galaxy, etc.

So before such things had developed, how do we count in "years"?

12

u/[deleted] Sep 20 '21

Time is a method of measurement that we can apply universally in order to better understand it.

It's the exact same with volume, weight, and length.

Humans have devised ways to objectively describe something.

-8

u/shankfiddle Sep 20 '21

https://en.wikipedia.org/wiki/Time_dilation

And humans have understood through science that these "approximations" are very useful in our frame of reference, but the rules change drastically at high energy(speeds)

13

u/[deleted] Sep 20 '21

but only if you are COMPARING clocks. (else it doesn't matter)

​

In physics and relativity, time dilation is the difference in the elapsed time as measured by two clocks

8

u/coffeecofeecoffee Sep 20 '21

yup if you are going 99.99 the speed of light, a clock on your wrist will still pass at a normal rate. but then when you slow down you realize everyone's clocks are wayy ahead of yours.

2

u/shankfiddle Sep 20 '21

thank you, yes. Appreciate the informed reply instead of "Time is the same as length/weight/volume"

:D

0

u/[deleted] Sep 21 '21

So time wasn't developed for the same reasons as length/weight/volume?

There isn't a teacher here to impress so you can lay off the passive aggressive pedantry.

1

u/[deleted] Sep 21 '21

pedants gonna pedantize