How We're Redefining the kg

Why HN readers recommended it

Praised as an excellent, accessible account of why the kilogram's definition changed, in redefinition threads.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel

Veritasium

Topic

kilogram redefinition

Format

explainer

Level

general

HN recommenders in dataset

3

HN mentions in dataset

3

Recommendation years in dataset

2017–2024

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 also an excellent video from Veritasium, a science and education YouTube channel, about what's being done to define the kilogram [VIDEO]

• Veritasium (Derick, who I've met personally) does a fantastic job on these fundamental science subjects. Le Grande K was the definition of the kilogram. Derick explains the question at hand, how Plancks constant is now used. Derick's quality is supreme & he is always very …

• > Does anyone have an example of where a change like this would be important? Well, it's important today, because the reference samples used across the world have drifted apart, and not in a consistent fashion. Which raises the question of whether the exemplar kg …