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diff --git a/mindmap/physics.org b/mindmap/physics.org index b70f829..f0fcf89 100644 --- a/mindmap/physics.org +++ b/mindmap/physics.org @@ -15,22 +15,31 @@ mathematical models postulate this, and non-mathematical models of the universe have been relegated to the study of metaphysics. * Fields in Physics +The current challenge in physics is uniting the big and the small; general relativity, and quantum mechanics. +There is no currently known theory that can describe [[id:2b8515d8-9f3c-44a3-a40d-147f6a2bbb25][everything]], and the very nature of this problem is one containing +many correspondences and [[id:1b1a8cff-1d20-4689-8466-ea88411007d7][dualities]]. ** 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 +weirdness. It is called classical mechanics because most of these theories wer invented before their quantum or relativistic counterparts, and usually serve as a baseline understanding for the later topics. -*** Newtonian Mechanics +*** [[id:6e2a9d7b-7010-41da-bd41-f5b2dba576d3][Newtonian mechanics]] It all started when Newton created three (but really two) fundamental laws of the universe that governed all things. -*** Lagrangian Mechanics +*** [[id:83da205c-7966-417e-9b77-a0a354099f30][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. +optimization. We believe that nature always optimizes for some parameters in all physical phenomena. Almost +all physical theories including electromagnetism, general relativity, Newtonian mechanics, and even quantum mechanics can be explained +within the Lagrangian framework. *** 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. +of electrodynamics, giving rise to the complete theory encoded in [[id:fde2f257-fa2e-469a-bc20-4d11714a515e][Maxwell's Equations]]. +*** General Relativity +General Relativity aims unify gravity with [[id:e38d94f2-8332-4811-b7bd-060f80fcfa9b][special relativity]], in a unified theory of macroscopic forces +including classical electromagnetism. + +** Quantum Mechanics +Quantum mechanics renounces all hope of having a deterministic view of physics, and instead replaces direct causation +with statistical causation, at least according to some interpretations. |