Relativity

Learning and science

physics textbook

SHOW HN2021

204points
39comments
#225of 2,533 in 2021
Top 9%of 2021 by points

How HN took it

LovedMost comments that take a side are positive

6 positive, 7 neutral or asking, 1 mixed, 1 critical, out of 15 comments about the project. Thread score +0.35.

Docs: 2 for, 1 againstIdea: 2 for, 0 againstExecution: 2 for, 0 against

The thread, comment by comment

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

What HN said

What people liked

  • Concise, solid introduction to GR

    From 2 comments
    • I had a quick look and this seems like a solid, concise intro to GR. The article https://people.carleton.edu/~nchriste/PTO000041.pdf gives an overview of the ways and books to…
      musgravepeter on HN
    • This is great and way better then the more long-winded textbook explanations. Math is around for a reason and it's good to see it at work by compressing a lot of material into…
      monday_ on HN
  • Useful outline and well-ordered sections

    From 2 comments
    • Maybe call it "The Mathematics of Relativity"? It works well as an outline from my point of view, but I think you have to assume the reader already understands the Lagrangian in…
      powera on HN
    • For those of us with that background, it looks like it might be really useful though. I've only had a brief look so far, but as somebody who took all the pure courses in my maths…
      jvvw on HN

Objections

  • Very dense, hard to follow without strong math background

    From 2 comments
    • I'm not sure who this is supposed to be useful to; I'm not sure how anybody can understand it unless they have completed an undergraduate degree in math AND already have a solid…
      powera on HN
    • Maybe call it "The Mathematics of Relativity"? It works well as an outline from my point of view, but I think you have to assume the reader already understands the Lagrangian in…
      powera on HN
  • Too much material in the GR section

    From 1 comment
    • Maybe call it "The Mathematics of Relativity"? It works well as an outline from my point of view, but I think you have to assume the reader already understands the Lagrangian in…
      powera on HN

Requests

  • EPUB version

    From 1 comment
  • A similar primer on QFT

    From 1 comment
    • This is great and way better then the more long-winded textbook explanations. Math is around for a reason and it's good to see it at work by compressing a lot of material into…
      monday_ on HN

Questions

  • Intuitive explanation of why time dilation and length contraction happen

    From 2 comments
    • @fferen Thank you for sharing your work. This is an excellent resource. If you don’t mind, I have a question. If I drive in a straight line on the Earth’s surface without…
      drewolbrich on HN
    • Apologies, I didn't mean to suggest that the two concepts are related. For SR, I'm looking for an answer to "why?" that only has same satisfying flavor as the sphere question. I…
      drewolbrich on HN

Alternatives named

  • Hartle's Gravity book

    From 1 comment
    • I had a quick look and this seems like a solid, concise intro to GR. The article https://people.carleton.edu/~nchriste/PTO000041.pdf gives an overview of the ways and books to…
      musgravepeter on HN
  • Taylor and Wheeler's Spacetime Physics

    From 1 comment
    • I've always had a fondness for Taylor and Wheeler's "Spacetime Physics". https://www.eftaylor.com/spacetimephysics/
      wnoise on HN
  • Sean Carroll's Biggest Ideas in the Universe videos

    From 1 comment
    • I recommend Sean Carroll’s “Biggest Ideas in the Universe” series on YouTube for modern physics. He’s a professor at CalTech. Each is 60-90 minutes with an accompanying 60-90…
      ericbarrett on HN
  • Einstein's Relativity book

    From 1 comment
    • That seems a reasonable complaint. For relativity with more explanation and not much math I suggest Relativity (The Special and the General Theory) by Albert Einstein, 1916.…
      dieselerator on HN

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