(bigthink.com)

171 points belter | 1 comments | 17 Oct 24 15:29 UTC | HN request time: 0.402s | source

Show context

IgorPartola ◴[20 Oct 24 14:13 UTC] No.41895504[source]▶

If I understand correctly, we experience time at nearly the speed of light. What I mean by that is that any particle’s 4 dimensional velocity vector has the magnitude of c which means that if it is mostly at rest in space then time has to be the major contributing factor but the magnitude of the vector. On the other hand something like a photon experiences to time at all as it moves through the 3 space dimensions at a total of c.

replies(7): >>41895838 #>>41895843 #>>41895992 #>>41896270 #>>41897669 #>>41897752 #>>41902254 #

1. dbsmith83 ◴[20 Oct 24 16:05 UTC] No.41896270[source]▶

>>41895504 #

A fidget spinner illustrates this for me--bear with me. When I spin it and it just stays at rest in my hand, it spins fast. But when I quickly move my hand carrying the spinner, you can see it slows down the spin rate, and then when I stop moving it, it speeds back up. While the mechanisms are entirely different (classical vs. relativistic) they both show motion can affect certain fundamental properties of a system, whether it be spin rate or the passage of time

↑

Time is a dimension, but not like space