THE VIDEO SHELF · power vs energy
Power is not energy: why the difference matters
Technology Connections explains the difference between power (watts) and energy (watt-hours) and why confusing them leads to errors. It runs about 52 minutes and uses everyday examples.
Why HN readers recommended it
HN points to it whenever a thread mixes up power and energy, such as battery specs and solar generation.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- Technology Connections
- Topic
- power vs energy
- Format
- explainer
- Level
- general
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 5
- Recommendation years in dataset
- 2025–2026
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.
Yes, totally agree. Also a paragraph on the relationship between energy, heat, cooling and that computers effectively turn all energy into heat might have been useful. The April 1st date on the article is telling. Shout out to "Technology Connections" YouTube channel for recently publishing …
VogonPoetry on Hacker News · 2025-04
In Watts Should Replace MAh as Essential Spec for Mobile DevicesThere is indeed; Watts aren't energy, and it's a common enough mistake that Technology Connections made a pretty good 52 minute video about it the other month [1]. [1]: [VIDEO]
DavidVoid on Hacker News · 2025-06
In Neuromorphic computing
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.