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physicstrack.app/problems/4-9-stationary-states

Quantum_Mechanics_Ch4.pdf

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itΨ(r,t)=[22m2+V(r,t)]Ψ(r,t)i\hbar\,\frac{\partial}{\partial t}\Psi(\mathbf{r},t) = \left[-\frac{\hbar^2}{2m}\nabla^2 + V(\mathbf{r},t)\right]\Psi(\mathbf{r},t)

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Three well-established facts about learning — retrieval practice, spacing, and desirable difficulty — wired directly into the grading loop, not bolted on as a reminder email.

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Timed to your forgetting curve

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Built for serious students of physics

Not a homework solver. A deliberate practice tool for building genuine physical intuition.

LaTeX-native input

Write problems exactly as they appear in textbooks, with a live rendered preview. Supports inline math, display equations, and bare formulas.

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Upload your handwritten solution as a PDF or photo. Claude reads each step, identifies errors, and explains the correct physical reasoning.

Progress tracking

Track your scores across mechanics, quantum theory, electrodynamics, and more. See patterns in your strengths and identify persistent blind spots.

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Studying

Introduction to Electrodynamics

Griffiths · 4th edition

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Topics covered

From first-year mechanics to graduate-level field theory.

Classical MechanicsQuantum MechanicsElectrodynamicsStatistical MechanicsGeneral RelativityQuantum Field TheoryMathematical PhysicsThermodynamicsOpticsParticle Physics
δS  =  δ ⁣t1t2L ⁣(qi,q˙i,t)dt  =  0\delta S \;=\; \delta\!\int_{t_1}^{t_2} \mathcal{L}\!\left(q_i,\,\dot{q}_i,\,t\right)\,dt \;=\; 0

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€99,95/ year

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Your library, mapped

Every textbook you add gets slotted into the curriculum — mastered topics collapse into checkmarks, active ones show your chapter progress, and the next suggested book is waiting right where it unlocks.

FOUNDATIONS · MASTERED

Kleppner · An Introduction to Mechanics
Boas · Mathematical Methods
Resnick · Fundamentals of Physics

MECHANICS

CM

Classical Mechanics

Goldstein

13 of 20 chapters

ND

Nonlinear Dynamics and Chaos

Strogatz

Suggested

ELECTROMAGNETISM

IE

Introduction to Electrodynamics

Griffiths

5 of 12 chapters

CE

Classical Electrodynamics

Jackson

Requires: Introduction to Electrodynamics

QUANTUM

PQ

Principles of Quantum Mechanics

Shankar

4 of 21 chapters

QF

Quantum Field Theory

Peskin & Schroeder

Requires: Quantum Mechanics

RELATIVITY

FC

A First Course in General Relativity

Schutz

3 of 20 chapters

GR

General Relativity

Wald

Requires: Special Relativity

Illustrative — your map fills in as you add textbooks and solve problems.

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