THE VIDEO SHELF · relativity and causality
The Geometry of Causality
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.
Why HN readers recommended it
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.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- PBS Space Time
- Topic
- relativity and causality
- Format
- explainer
- Level
- intro
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 6
- Recommendation years in dataset
- 2017–2022
These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.
From the original HN conversations
Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.
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 …
neom on Hacker News · 2017-02
In Theories about a link between the human mind and quantum physicsAs 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 …
shagie on Hacker News · 2022-08
In “I survived the TCP transition” (2013)
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.