Best way to learn the equations in physics

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Discussion Overview

The discussion revolves around the best methods for learning physics equations, particularly in the context of self-study. Participants explore the relationship between equations and the underlying concepts in physics, as well as resources for learning.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant, Brian, inquires about books that focus solely on teaching physics equations, having already learned concepts through other means.
  • Another participant suggests that doing numerous problems in physics courses helps equations become intuitive, although they note that tests provided an equation sheet that was rarely used.
  • Brian clarifies that he is self-learning and seeks recommendations for books that teach equations.
  • One participant argues that equations cannot be separated from their conceptual meanings, stating that mathematics is the language of physics.
  • Feynman's Lectures on Physics are recommended as a resource rich in equations.
  • Several participants express skepticism about the effectiveness of memorizing equations, emphasizing that understanding concepts and their applications is more important than rote memorization.
  • One participant illustrates that many equations in physics represent the same underlying concept, such as conservation of energy, and suggests focusing on understanding when to apply these concepts rather than memorizing various forms of the equations.

Areas of Agreement / Disagreement

There is no consensus on the best way to learn physics equations. Some participants advocate for understanding concepts over memorization, while others are looking for resources that focus on equations specifically. The discussion reflects differing views on the importance of memorization versus conceptual understanding.

Contextual Notes

Participants express varying assumptions about the role of equations in learning physics, with some emphasizing the necessity of understanding concepts and others seeking resources that focus on equations. The discussion does not resolve these differing perspectives.

Briandaflyin
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I am wondering the best way to learn the equations in physics. I have already learned most of the concepts through other means ie. Googling. Is there any books that only teach the equations.
Brian
 
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Which equations? I found myself doing SO many problems in Phys 1 that it just started to come naturally. But on the tests we were given and equation sheet, though I rarely used it.
 


I am not taking phys 1, just self learning. I was juat wondering if there any good books to read that teach you them.
Brian
 


You can't really separate the math from the concepts so there's no such book as 'just equations'. Wouldnt make much sense.

For example what is Newton's second law, conceptually mean? If you said something like, "Force is equal to the rate of change of momentum" or something equivalent then all you did was put the equation into words. Mathematics is really the language of physics.
 


Feynman's Lectures on Physics are full of equations. Why not start with them?
 


I'll try Feynman's lectures, is it a book or audio
 


Eemmmmm... dude, memorizing the equations isn't going to get you anywhere in physics. Even something as simple as F=ma is significantly harder than it looks.
 


Yeah, I got a textbook at the library, so I guess it will work. Thanks everyone
 


Angry Citizen said:
Eemmmmm... dude, memorizing the equations isn't going to get you anywhere in physics. Even something as simple as F=ma is significantly harder than it looks.

This.

I've never once gone out of my way to memorize equations. Some of them, like Schrödinger's equation from quantum mechanics or the first law of thermodynamics, do eventually embed themselves into your head after a while, but memorizing them won't help you do physics better. What matters more are the concepts: what the equations mean and how to manipulate them mathematically is far more important than being able to recite them.

In fact, there are only a handful equations in physics. Conservation of energy, for example, shows up in several forms:

1. m g h + \frac{1}{2} m v_i^2 = \frac{1}{2} m v_2^2
2. dU = T \: dS - p \: dV
3. - \frac{\hbar^2}{2m} \nabla^2 \Psi + V \Psi = i \hbar \frac{\partial \Psi}{\partial t}

etc.,

They're all pretty much the same equation: energy before (+ work, if applicable) = energy after. It's just ONE equation, disguised as several. No need to memorize it in its myriad forms. Focus more on knowing when to applying the concept.
 

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