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| author | Preston Pan <preston@nullring.xyz> | 2023-07-13 22:58:59 +0800 |
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| committer | Preston Pan <preston@nullring.xyz> | 2023-07-13 22:58:59 +0800 |
| commit | c335c05f511a373681d8644500d7750a519f58fa (patch) | |
| tree | a1fa2737bc88c52ed8d0b894af772b6c41009462 /mindmap/physics.org | |
| parent | 5362e381bcf1b1fe212ff3d550f61c9d55cd18e6 (diff) | |
add a lot of things
Diffstat (limited to 'mindmap/physics.org')
| -rw-r--r-- | mindmap/physics.org | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/mindmap/physics.org b/mindmap/physics.org new file mode 100644 index 0000000..b70f829 --- /dev/null +++ b/mindmap/physics.org @@ -0,0 +1,36 @@ +:PROPERTIES: +:ID: ece8bf94-4e3c-4939-a77a-9949c1ec0dc6 +:END: +#+title: physics +#+author: Preston Pan +#+html_head: <link rel="stylesheet" type="text/css" href="../style.css" /> +#+html_head: <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script> +#+html_head: <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script> +#+options: broken-links:t + +* Laws of Nature +By engaging in physics modeling, we are postulating that there are rules that +"nature" follows, and that these rules are logically consistent. At least, +mathematical models postulate this, and non-mathematical models of the universe +have been relegated to the study of metaphysics. + +* Fields in Physics +** Classical Mechanics +Classical mechanics deals with fields of physics that do not deal with time dilation or quantum +weirdness. It is called classical mechanics because most of these theories were invented before +their quantum or relativistic counterparts, and usually serve as a baseline understanding +for the later topics. +*** Newtonian Mechanics +It all started when Newton created three (but really two) fundamental laws of the universe that +governed all things. +*** Lagrangian Mechanics +This is a different strain of classical mechanics. Instead of looking at direction and vectors, +it looks at a single fundamental principle, even more fundamental than inertia and conservation of momentum: +optimization. We believe that nature always optimizes for some parameters in all physical phenomena. +*** Classical Electrodynamics +Classical electrodynamics attempts to explain the electromagnetic force from a classical perspective. What is +light? How does electricity actually work? All these questions you will find (half) answered in the study +of electrodynamics. +**** [[id:32f0b8b1-17bc-4c91-a824-2f2a3bbbdbd1][Electrostatics]] +This is a study of the force of particles with charge on another in a motionless context. It is the baseline +for studying more complicated electromagnetic theory. |