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THE VIDEO SHELF · spacetime physics

Are Space and Time An Illusion?

A PBS Space Time episode hosted by Gabe Perez-Giz on the nature of spacetime and whether space and time are fundamental. It builds up reference frames and causality in a short, dense format.

Why HN readers recommended it

HN commenters point to the PBS Space Time series as a high-quality, bite-sized way to learn modern physics concepts.

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
spacetime physics
Format
explainer
Level
intro
HN recommenders in dataset
3
HN mentions in dataset
4
Recommendation years in dataset
2016–2020

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.

  • There's an episode of PBS Space Time about this, "The Speed of Light is NOT About Light" [1], which comes pretty close to making the same points you are making. It might be useful to watch this earlier episode, "Are Space and Time an Illusion?" …

    tzs on Hacker News · 2020-11
    In Warp Drive News
  • The speed of light does not change for each given reference frame, i.e. it is constant. However, space and time are observed differently depending on a given reference frame. With regards to your second question, photons experience no time whatsoever. From the photon's perspective, they …

    spuz on Hacker News · 2016-12
    In Quantum Gravity’s Time Problem
  • 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 physics

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.