explainer · HACKER NEWS RECOMMENDATION
How are holograms possible?
3Blue1Brown · 3 HN recommenders · 3 recommendation months
Recommended by 3 Hacker News commenters across 3 months (2024–2025).
SignalTube analysis
Among 81 other explainer videos tagged Fundamental physics, the mean is 2.7 distinct HN recommenders. This video has 3 distinct HN recommenders, close to that mean. Recommendations span 3 distinct months; the peer average is 2.4 months. This is a data-derived comparison, not a human review or quality rating.
100% of its 3 labeled comments are marked as recommendations or strong recommendations. HN mention years are 2024–2025; those years describe discussion history, not upload date. Its verified runtime is 46 minutes 24 seconds. YouTube lists its publication date as 2024-10-05.
- Channel / speaker
- 3Blue1Brown
- Verified runtime
- 46m 24s
- YouTube upload date
- 2024-10-05
- Hacker News mention years
- 2024–2025
SAME TOPIC AND FORMAT
Compare with related videos
The comparison cohort uses other explainer videos in Fundamental physics. “Shared recommenders” counts HN users who recommended both videos in the source graph.
| Video | HN recommenders | Recommendation months | Positive label share | Shared recommenders | Runtime | Upload date |
|---|---|---|---|---|---|---|
| How are holograms possible?Current video | 3 | 3 | 100% | — | 46m 24s | 2024-10-05 |
| The Speed of Light is NOT About Lightexplainer · PBS Space Time | 8 | 8 | 67% | No recorded overlap | 12m 46s | 2015-10-07 |
| A new way to visualize General Relativityexplainer · ScienceClic English | 8 | 6 | 89% | No recorded overlap | 11m 33s | 2020-09-03 |
| How to Understand What Black Holes Look Likeexplainer · Veritasium | 8 | 4 | 80% | No recorded overlap | 9m 19s | 2019-04-09 |
THREE SOURCE-BASED CONTEXT POINTS
Why Hacker News recommends it
Each note combines the dataset’s stance label and short rationale; comment bodies are not reproduced. Open the HN source for the original discussion.
The archive classifies this as a strong recommendation in “Hololuminescent Display”. Its short rationale: Transformed the commenter's understanding of holograms.
The archive classifies this as a recommendation in “Raspberry Pi Lidar Scanner”. Its short rationale: Best explanation of holograms, though not directly implementation-ready.
The archive classifies this as a recommendation in “The Physics of Magic Windows (2021)”. Its short rationale: Nice explanation of real holograms using diffraction and phase.