Live data from Hacker News

So You Want to Learn Physics (2016)

susanjfowler.com

121–126 of 126 posts

Re: So You Want to Learn Physics (2016)

#121

Earlier quoted context omitted.

I think I appreciate the point you are making, but you have gone a little too far in making that point. I've gone through a physics education, and I can attest that one can learn the material, be good at taking exams, and still do a poor job of applying it to the real world. The other extreme is as problematic, though. Knowing certain formalism in mathematics can really help in expressing a physics principle - and at…

> wary of anyone claiming strong physics knowledge Well, that depends. Faraday was a great physicist (his claims, whatever they may have been, notwithstanding).

Are you suggesting that Faraday did not know calculus?

Re: So You Want to Learn Physics (2016)

#122

Earlier quoted context omitted.

> wary of anyone claiming strong physics knowledge Well, that depends. Faraday was a great physicist (his claims, whatever they may have been, notwithstanding).

Are you suggesting that Faraday did not know calculus?

According to Wikipedia, "his mathematical abilities, however, did not extend as far as trigonometry and were limited to the simplest algebra."

Re: So You Want to Learn Physics (2016)

#123
post #23

Well I disagree with many of the book choices, but if there's one thing that's absolutely spot-on is this: >One big problem is that a lot of the popular books written about physics (especially those by famous physicists) are incredibly speculative and tend to present an unrealistic view of what the study of physics is all about. When you're learning physics, it's good to avoid these types of speculative books, and st…

Non native speaker here. Can anybody explain what "books are speculative' means ?

Re: So You Want to Learn Physics (2016)

#124
post #4

I went to university intending to study computing science, but switched to physics half way through under the assumption that you could teach yourself computing science more easily than physics. I wouldn't change what I learned for the world, and I'm now in physics academia, but it's funny how my job these days involves using some of the algorithms, mathematics and data structures that I was just about to start learn…

> I think computing science (not just software engineering) is slowly but surely becoming an essential part of many areas of modern physics research. I like to say that physics, mathematics, and computer science are the three pillars of human knowledge. There's some overlap between each pillar, and we don't yet fully understand how each of them fully relate to the others, but each is essential to gathering a full pic…

And that's the problem with living in a philistinic society. When people think the sciences are the only noteworthy achievements of human intellect.

Re: So You Want to Learn Physics (2016)

#125

Earlier quoted context omitted.

I disagree. As someone who doesn't know much about Physics, certain things I read in the Feynman lectures today still stick with me. Like if you drop a heavy object onto the floor, its temperature rises by a minuscule amount lol.

> Like if you drop a heavy object onto the floor, its temperature rises by a minuscule amount lol. Tidbits like this are not a substitute for a working knowledge of physics. The Feynman Lectures are not a substitute for undergraduate courses. You'll get more out of the Feynman Lectures after completing the main undergraduate courses.

I'm not sure what you define as a 'working' knowledge of Physics, but to get to a research level of physics requires more than a few introductory physics course also. I'm not saying the Feynman lectures is a substitute for learning any specific part of Physics, but it is useful for understanding basic concepts and also understanding how those concepts can fit in to our everyday lives.

What I disagreed about in the post I replied to was the position that it wasn't "intuitive" or a good first text for beginners.

Re: So You Want to Learn Physics (2016)

#126
post #25

Earlier quoted context omitted.

> "11 dimensions", "string theory", or "time dilation" One of these things is not like the others...

The derivative of time in the spacetime* tensor is just 1. There's no speed up, locally, which is what counts. The rest is just an effect of observation. *I do not remember nor care what it's called. I'm sure you know what I mean anyway.

[deleted]
Post reply on HN