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The Geometry of Causality

PBS Space Time · 1.8M views · 2017-02-02 · 16:07

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Overview

PBS Space Time explains how spacetime geometry and light cones determine the order of events and what can cause what. It visualizes causality in special relativity.

On Hacker News

Used as a go-to reference for relativity arguments, such as spacetime intervals being the same for all observers, and as a suggested follow-up for physics fans.

Recommended by 2 HN people across 2 months · HN mentions 2017–2022

Topics

Fundamental physicsCosmology & astrophysics
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special relativitylight conesspacetimecausalityphysics

What people said

shagie · 2022-08 · Recommendation

As an aside, the PBS space time video The Speed of Light is NOT About Light : [LINK] As an aside to the aside - as I rewatch it I quickly notice how young he looks (and then note the date is 2015 on there - one of the early ones and the production is less refined). You may also like The Geometry of Causality [VIDEO]

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neom · 2017-02 · Recommendation

I spend pretty much every weekend watching (super dyslexic) hours and hours of "stuff" about quantum, form quantum biology to physics to astro, here are some good ones around humans and the universe. Some may not seem totally relevant but give foundational knowledge, suggest watching in order: - [LINK] - [VIDEO] - [LINK] - [LINK] - [LINK] - [LINK] - [LINK] - [LINK]

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stcredzero · 2018-12 · Reference

PBS Space Time on the same subject: [VIDEO] Minute Physics SpaceTime Globe (The best tool for understanding relativity I've ever seen.) [LINK]

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Sources

Video by PBS Space Time, played through YouTube.

Data and selection notes

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