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Complete Solution To The Twins Paradox

minutephysics · 2.3M views · 2016-08-26 · 3:34

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Overview

A minutephysics explainer on the twins paradox in special relativity. It shows why the traveling twin ends up younger and how acceleration resolves the paradox.

On Hacker News

HN commenters recommend it as an easy-to-digest explanation of time dilation and the twin paradox.

Recommended by 2 HN people across 2 months · HN mentions 2018–2021

Topics

Fundamental physicsEveryday physics & science demos
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twins paradoxtime dilationrelativityminutephysicsacceleration

What people said

p1mrx · 2020-08 · Recommendation

These minutephysics videos provide some idea of what's happening: - [LINK] - [VIDEO] (Although the time dilation in Interstellar is due to gravity, not high-speed travel.)

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Sean1708 · 2018-07 · Recommendation

Minute Physics did a good couple of videos on this[0,1], pretty much the same info as is in the Wiki but might be easier to digest for some people. [0]: [LINK] [1]: [VIDEO]

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godelski · 2021-09 · Reference

I'm pretty sure this doesn't work out because you have to slow down. So thinking about it, if you are traveling at that speed because of your inertial reference frame it is equivalent that everyone else around you is moving at (or near) the speed of light and they are moving slowly through time. This is the classic twin paradox and there is a resolution to it, which is that you can't instantaneously turn around.[0] Or in our case, we have to turn around to slow down. [0] [VIDEO]

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Sources

Video by minutephysics, played through YouTube.

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