Modern Physics Discussions

Discussion on the double copy theory of gravity

0 minutes   : four fundamental forces in nature

1 minutes   : the double copy theory

2 minutes   : particle physics

4 minutes   : quantum field theory

5 minutes   : gravity

6 minutes   : quantum gravity

7 minutes   : the strong force

8 minutes   : quantum Chromo-dynamics

13 minutes : the wave equation

15 minutes : field theory

20 minutes : general relativity

31 minutes : Feynman diagrams

39 minutes : trinity of theories

57 minutes : Big Bang theory

1 hour and 10 minutes : what's coming in the future

Discussion on the double-slit experiment

0 minutes : example of the double-slit experiment at home

3 minutes : is light a particle or a wave

4 minutes : Newton's and Thomas Young's view of light

5 minutes : Thomas Young demonstrates the wave nature of light

7 minutes : light as a particle cannot explain cancellation of light

8 minutes : how light as a wave explains cancellation of light

Discussion on mass

0 minutes : symmetries

1 minutes : symmetry breaking

3 minutes : quantum fields

4 minutes : vacuum state

7 minutes : spontaneous symmetry breaking

8 minutes : mass

Discussion on fields

0 minutes : what is a field

2 minutes : it is not necessary for a field to have a physical meaning

3 minutes : fields are a non material, mathematical abstraction

4 minutes : the electric field

5 minutes : history of forces interacting over a distance

8 minutes : how electric charge interacts over a distance

5) 1 of 10 Introduction To These Lectures

7 minutes   : classical and quantum randomness

13 minutes : double-slit experiment

25 minutes : deterministic laws

33 minutes : single-slit experiment

1 hour and 22 minutes : vector space

5) 2 of 10 Linear Operators And Vector Spaces

4 minutes   : uncertainty

13 minutes : complex conjugate

17 minutes : complex vector space

26 minutes : dimension of a vector space

44 minutes : inner product space

59 minutes : basis vectors

1 hour and 8 minutes   : coefficients of a vector

1 hour and 41 minutes : operators

5) 3 of 10 Wave Functions

0 minutes   : linear operators

4 minutes   : basis of vectors

19 minutes : hermitian operators

26 minutes : eigenvalues and eigenvectors

40 minutes : postulates of quantum mechanics

56 minutes : motion of a particle on a line

1 hour and 7 minutes   : Dirac delta function

1 hour and 43 minutes : momentum interpretation

1 hour and 47 minutes : incompatible quantities

5) 4 of 10 Angular Momentum

0 minutes   : review of quantum systems

7 minutes   : delta functions

16 minutes : probabilities in quantum mechanics

34 minutes : particle on a circular line

53 minutes : angular momentum

59 minutes : quantum mechanics versus classical mechanics

1 hour and 19 minutes : double-slit experiment

1 hour and 30 minutes : the puzzling phenomenon of interference

1 hour and 49 minutes : modelling for a single slit

5) 5 of 10 Photon Polarization

0 minutes   : concept of a periodic line

14 minutes : stretching eigenvectors

24 minutes : identity operator

28 minutes : wave function definition

49 minutes : describing a wave packet

55 minutes : incompatible observables

1 hour and 5 minutes   : photons passing through a polarizer

1 hour and 30 minutes : polarized photon at forty five degrees passing through a vertical polarizer

5) 6 of 10 Photon Polarization Continued

0 minutes   : review of a polarized photon

3 minutes   : properties of a polarized photon

7 minutes   : polarizer as both a measuring apparatus and a preparer of states

14 minutes : quantum mechanics analysis of a polarized photon

38 minutes : polarizers with arbitrary angle

51 minutes : review of trigonometric formulas

1 hour and 8 minutes   : matrix formulation of theta polarization observable

1 hour and 20 minutes : circular polarization

1 hour and 31 minutes : elliptical polarization

5) 7 of 10 Circular Polarization Continued

6 minutes   : comparison of classical mechanics and quantum mechanics

13 minutes : measurements of different observables

16 minutes : phase change to a state

47 minutes : dynamics of states in time

53 minutes : differences of states are conserved

1 hour and 2 minutes : unitary operators

5) 8 of 10 Evolution Of States In Phase Space

10 minutes : time evolution is unitary in quantum mechanics

15 minutes : derivation of Hamiltonian

28 minutes : Schrodinger equation

33 minutes : polarisation

1 hour and 7 minutes   : observable change in time, commutator

1 hour and 17 minutes : conserved expectation values

1 hour and 21 minutes : particle on a line

5) 9 of 10 Black Body Radiation And History Of Quantum Mechanics

18 minutes : Schrodinger equation for free one dimensional particle

1 hour and 0 minutes   : time evolution of expectation values

1 hour and 11 minutes : commutators

1 hour and 32 minutes : particle with potential

1 hour and 42 minutes : Ehrenfest theorem

5) 10 of 10 Harmonic Oscillator And Angular Momentum

0 minutes   : wave motion and the Lagrangian

25 minutes : wave function over time

34 minutes : energy eigenvalues of the harmonic oscillator

50 minutes : ground state of the harmonic oscillator

1 hour and 27 minutes : quantised energy of oscillations

1 hour and 33 minutes : calculating the energy levels of excited states