Special Relativity: When you move a clock, it is slower as when it just sits there. When stopped, it runs with the normal speed again. (All relative to the non-moving observer.)

How's that? There are explanations out there, but wrote it down myself to understand it better.

For fun, I added a calculator to see how bad it can get. 4 hours in a plane and your clock lags ~4 nanoseconds (ignoring gravitation).

https://miamao.de/blog/2026-01/22.Moving_Clocks_In_Special_Relativity.html

#physics #specialRelativity #twinParadox #lightClock

How does the Twin Paradox work in Special Relativity? There are gazillion more or less correct and useful descriptions out there.

Everyone has their preferred one. Like in University many years ago, I grok things best if I describe them in my own words. So here we go:

https://miamao.de/blog/2026-01/11.Twin_Paradox_Explained_with_the_Light_Clock.html

#specialRelativity #twinParadox #lightClock #miamao_de