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Ask HN: How to self-study physics?

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Re: Ask HN: How to self-study physics?

#101
The answer is not mine, it's from Quora. But I think the info, which is presented in it, will be useful to you.

In a nut shell, information-wise, Physics entails primarily:

- principles and laws;

- definitions, terminologies and nomenclatures;

- process flows;

- causes and consequences;

- problem:solution;

notwithstanding a slew of lab experiments in problem solving;

So, it's good to know a good number of diagramming techniques, e.g. idea maps, concept maps, Venn or matrix diagrams, flow charts, fish-bone diagrams, etc. to help you to flesh out important information, as part of your note-taking/note-making;

First thing first:

Learn to segregate the "core material" from "elaborative material", with the help of your subject/exam syllabi."

- Core material" = key concepts; principles; laws; definitions; terminologies; nomenclatures; diagrams and drawings, etc.;"

- Elaborative material" = examples, illustrations, anecdotes, etc.;

That's to say, your focus is on "core material", and using Pareto's Law, generally about 80% of exam questions are more likely to come from "core material".

This is not to say "elaborative material" is not important.

Tactically speaking, once you have the full grasp of "core material", "elaborative material" is more likely to fall in automatically.

You may even want to explore the use of the following study tools:

i) SQ5R reading/studying strategy:

It's a structured system [SQ5R is an acronym for SURVEY, QUESTIONS, READ, RECORD, RECITE, REVIEW, REFLECT], but it equips you with efficient and effective ways to navigate academic materials, especially the intellectually-intense ones, with ease and expediency.

I append herewith a nice document for you to read:

http://www.saddleback.edu/upload...

ii) Cornell Notes:

It's a far more superior system that the conventional outline method, known to most students in schools, college and universities.

It's latent power comes from its simple and yet elegant three-column spatial configuration for taking notes and making notes.

The "cue" column is the most powerful system I have ever known, as it facilitates - and expedites - your memory retention/recall via self-testing.

You may want to read this nice write-up on Cornell Notes method of note-taking and note-making, in conjunction with SQ5R reading strategy:

Guide to Effective Note Taking - SQ3R and Cornell - The Student Power

If you think you have an artistic streak in you, you may even want to explore the multitudinous graphical methods of note-taking and note-making, like idea mapping, cluster diagramming, and other graphic organisers and visual tools.

As a supplementary routine to SQ5R and Cornell Notes, you may even want to explore the use of the proven Index Card Strategy to deal with your "core material", particularly the definitions, terminologies and nomenclatures, for quick and convenient "learning-on-the-go": commuting and waiting in queue.

For your final test/exam preparation, you can even expand the foregoing "Divide and Conquer Strategy" as follows:

Grab a large sheet of blank paper, butcher roll or news print roll, say 8 ft by 4 ft or so, and paste it on the wall, and a box of colour markers, both fat-tip and fine-tip.

Some assorted colour sticky notes, too!

Now, pick up your subject textbook.

With the fat-tip marker, write the subject title on the centre of the paper on the wall.

You may want to draw a simple image of your choice to represent this title.

Using your knowledge of "core" ideas and "elaborative" details you have developed earlier, write them all down, using your fine-tip markers, on the wall paper, all along the periphery.

You can transcribe "elaborative" details on to your sticky notes, and place them alongside the "core" ideas.

Upon completion, stand back, do a gallery walk and quickly review just to make sure that you have not missed out any important data from your notes and/or subject textbook.

This single sheet of completed wall paper for the chosen subject will be your consolidated and summarised study sheet for your subject test/exam.

The beauty of this elaborate process is that you have at your complete disposal all the "core" ideas and "elaborative" details all nicely laid out on one single sheet of paper, at a visual glance.

You can then use each large consolidated/summarised sheet for self-testing or reciprocal questioning with a study buddy.

For the fun of it, you may even want to paste the completed wall paper on to the bedroom ceiling hovering over your bed, so that you can do what I often like to call the 3 R's (recap/review/reinforce) prior to hitting the sack.

I just realize, I could just paste you the lik. Sorry. https://www.quora.com/How-do-I-study-physics-by-myself/answe...

Re: Ask HN: How to self-study physics?

#102

For the love of God, don't use Feynman lectures to learn physics. That's something you read after you know physics, for relaxation and conceptual stuff. Resnick & Halliday is a much better freshman/sophomore book. Susskind's "theoretical minimum" is actually pretty good. http://theoreticalminimum.com/courses Fowler gives a pretty conventional undergraduate physics curriculum (adding Feynman in there somehow). If it w…

I found the "no-nonsense" series of books on elementary theoretical physics by Jakob Schwichtenberg to be pretty good as a complement to Susskind's.

Re: Ask HN: How to self-study physics?

#103
The most difficult thing will be getting your math up to speed so you really need to dual track the physics and math.

The Landau books are good but assume probably more math than typical college text in mechanics, em, qm, etc.

Probably a bit down the road for you if following typical curriculums (perhaps not others) the MIT 80X series by Zwiebach were good.

Re: Ask HN: How to self-study physics?

#104
post #88

Earlier quoted context omitted.

"I'd suggest not actually trying to simulate physical systems on a computer" I cannot disagree enough with this statement. I am double major in Physics and CS. There are two kinds of physics, Math and Physics. Most of what you learn in uni physics is Math. But the Math is only one (outdated) description of the nature of physical law. Leonard Susskind himself has said on multiple occasions that the equations of physic…

I am to really glad to hear commentary like this coming from physicists. (read: glad to see others siding with my biases). Ceteris paribus there is one significant distinction between Mathematics and Computer Science: state. The Mathematical Universe is immutable/stateless/timeless. The Computational Universe is mutable/stateful/time-bound. The observer effect in physics can be trivially expressed and evaluated as a…

> Computational Universe is mutable/stateful/time-bound

A bunch of functional programmers would like to have a word with you.

Re: Ask HN: How to self-study physics?

#105

For the love of God, don't use Feynman lectures to learn physics. That's something you read after you know physics, for relaxation and conceptual stuff. Resnick & Halliday is a much better freshman/sophomore book. Susskind's "theoretical minimum" is actually pretty good. http://theoreticalminimum.com/courses Fowler gives a pretty conventional undergraduate physics curriculum (adding Feynman in there somehow). If it w…

"For the love of God, don't use Feynman lectures to learn physics. That's something you read after you know physics, for relaxation and conceptual stuff..." Agree with this 100%. To learn math or physics you have to do it, experiment, and all that.

Feynman lectures are fine as a supplement to more standard text.

Re: Ask HN: How to self-study physics?

#106
After decades of successful and unsuccessful self study, the thing I have found for myself is that I have to have an end goal in mind of what I want to do with the knowledge. Then it's usually pretty obvious how to work backwards and figure out how to get there. I've been tremendously unsuccessful when trying to learn just with the goal of learning. It's much harder then to quantify what is good enough, and just end up with a very surface level understanding even after putting in a lot of work.

Re: Ask HN: How to self-study physics?

#107
post #88

Earlier quoted context omitted.

I am to really glad to hear commentary like this coming from physicists. (read: glad to see others siding with my biases). Ceteris paribus there is one significant distinction between Mathematics and Computer Science: state. The Mathematical Universe is immutable/stateless/timeless. The Computational Universe is mutable/stateful/time-bound. The observer effect in physics can be trivially expressed and evaluated as a…

It seems likely that anything that can be expressed in "any programming language" is isomorphic to something that exists in math and can be expressed in that language (automata theory, type theory, category theory, pick your poison).

That is probably because you think expression end evaluation are isomorphic. They aren't.

Not all functions are referentially transparent. All Mathematical functions are assumed to be.

Re: Ask HN: How to self-study physics?

#108

Earlier quoted context omitted.

> Most of what you learn in uni physics is Math. But the Math is only one (outdated) description of the nature of physical law. Is this the lack of additional parameters for the equations? All of my physics problems (only took a couple courses) were like "what if this spherical horse rolled down a hill at 34 degree decline" but failed to include friction, atmosphere. Just gravity. It always felt fake to me. Perhaps t…

By outdated what I more mean is that I think if the greats of the ~1800 had modern computers they would probably not use mathematics in its current form to study physics. There already has been on transition of this kind. Newton used Geometry to study physics whereas today we use Math which more has its roots in symbolic logic.

If people in 1800s had modern computers we'd be sitting now on ruins of the global nuclear war of 1850 all watching TikTok.

Re: Ask HN: How to self-study physics?

#109
1) Richard Wolfson's _Essential University Physics_ is excellent! It doesn't get lost in math, but also doesn't oversimplify. It's thinner than Halliday & Resnick, e.g. I've read a lot of Classical Mechanics books, and this is my favourite for a solid foundation for university-level physics. The first half (volume) is Mechanics, and the second volume is on electricity and magnetism.

So, that's a typical first-year (two term) course in physics.

After that, do Purcell for Electricity & Magnetism

You'll often get advice, like "you need to learn XYZ math first". Don't listen to this! Just learn the math as you go along -- it's much more efficient. The have to learn X first puts up unnecessary roadblocks and chances to get discouraged. You can always circle back for more elegant treatments once you math up. E.g. learning 4-vectors makes special relativity a lot less ad-hoc and weird seeming. It becomes obvious.

P.S. I was prototyping a subscription app to teach E&M, but started to think of just teaching physics in general. Would you pay something like $15/mo to have a adaptive-learning app/game/personal AL tutor to teach you first & 2nd year physics?

Re: Ask HN: How to self-study physics?

#110

1) Richard Wolfson's _Essential University Physics_ is excellent! It doesn't get lost in math, but also doesn't oversimplify. It's thinner than Halliday & Resnick, e.g. I've read a lot of Classical Mechanics books, and this is my favourite for a solid foundation for university-level physics. The first half (volume) is Mechanics, and the second volume is on electricity and magnetism. So, that's a typical first-year (t…

Regarding simulating mechanics, and combining physics + CS:

1) Have a read through Witkin & Baraff's Physically Based Modelling SIGGRAPH 2001 course notes. Short, sweet, and packed with real-world expertise/tricks.

2) Look up stuff by Chris Hecker from the '90s and early aughts.

3) Ian Millington's _Game Physics Engine Development_ is very good.

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