 This semester:
 Cosmology (grad)
 Physics III
 Past semesters:
 Cosmology (undergrad): Reference: Barbara Ryden’s book
 Introduction: zero, Olbers’ paradox, homogeneous and isotropic, Hubble law and expanding universe, BigBang vs. SteadyState model, a little bit about particles, a little bit of CMB
 Gravity: Newton, Special Relativity, General Relativity, Curvature, RobertsonWalker metric, more about RWmetric
 Cosmic Dynamics: Curvature and Einstein Equations, The first Friedmann equation 1 & 2, The second Friedmann and Continuity Eqns., The Cosmological Constant
 Model Universes: Continuity Equation, Empty Universe, SingleFluid Solutions 1 & 2, MultiComponent Universes 1 & 2 & 3
 Cosmological Parameters: Velocity and Acceleration 1 & 2, Luminosity Distance, Angular Diameter Distance, Cosmological Expansion
 Cosmic Microwave Background:
 Analytical Mechanics II: because of COVID19, I decided to record my classes without you, unfortunately! but please stay at home and take care of yourself and others. Join our Telegram group for questions and discussions! And you can find the videos on Aparat.com: Motion of a spinning top , Coupled Harmonic Oscillators 1, 2, 3, 4, 5, 6, 7, Hamiltonian Mechanics 1, 2, 3, 4, 5, Poisson Brackets, Canonical Transformations 1, 2, ActionAngle Variables 1, 2, HamiltonJacobi 1, 2, Collision Theory 1, 2, 3, 4, 5, Continuous Mechanics 1, 2, 3, 4, 5, The first MidTerm Exam

 Physics Lab II
 Cosmology (graduate students) recorded for Maktabkhooneh
 Analytical Mechanics I and II
 Gravitation I and II (graduate)
 Physics I, II, III
 Physics Lab I
 Astrophysics (undergrad)
 Thermodynamics
 Mathematical Physics I & II
 Calculus I and II