Top all-time · #19208
e=mc2andallthat
Personal blog · physicsteacher.blogsciencemath
e=mc2andallthat is a personal blog at physicsteacher.blog about science and math. Since 2021, 4 different Hacker News readers have linked it 4 times. It is still writing: the last post was on 2026-05-17, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
HN readers link this physics teaching blog for its history-of-science posts, such as one on how ancient Greeks calculated the sizes and distances of the Earth, Moon and Sun.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
A Physics teacher writes about...stuff.
What Hacker News says?
> Also people had little understanding of the scale of things. There is nothing indicating that the moon is smaller than earth or that the sun is much, much bigger than earth, and both appear equally large in the sky... The Ancient Greeks were actually quite clever about trying to calculate things: * https://physicsteacher.blog/2021/05/31/from-the-earth-to-the... * https://en.wikipedia.org/wiki/On_the_Sizes_and_Dist…
Comment linking /2021/05/31/from-the-earth-to-the-moon-in-270-bc/
on “Weighing Up Galileo's Evidence”Submitted Using dimensional analysis to estimate the energy released by an atomic bomb as a story · 2 points
HN discussionSubmitted Deriving Centripetal Acceleration as a story · 1 points
HN discussionSubmitted Crossing Cognitive Chasms With P-prims (2018) as a story · 1 points
HN discussion