THE VIDEO SHELF · fluidized beds
Liquid Sand Hot Tub- Fluidized air bed
Mark Rober builds a hot tub filled with sand fluidized by air blown from below, so that the sand behaves like a liquid. He explains how fluidized beds work and shows people swimming in them.
Why HN readers recommended it
HN mentions it as the famous, kid-delighting demo of fluidization, especially in sand battery and industrial process threads.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- Mark Rober
- Topic
- fluidized beds
- Format
- demo
- Level
- general
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 5
- Recommendation years in dataset
- 2018–2025
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.
Faked and discovered to include fake reactions that were then removed, are different situations. Mark has been producing high quality educational and entertaining videos that encourage kids to get into science. I have personally watched kids go nuts over his Fluidized air bed experiments, and …
reconbot on Hacker News · 2018-12
In What Is Glitter?No in fact this is a bloody brilliant design: they turn it into a huge fluidized bed reactor and extract the heat with air! See this fun fluidized sand-filled jacuzzi if you're not grokking my too brief explanation: [VIDEO]
isoprophlex on Hacker News · 2022-11
In A sand battery could transform clean energy
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.