The  Simple  Universe

1) 1 of 2 Discussion on electric charge

0 minutes : introduction

8 minutes : isospin and hypercharge

9 minutes : the weak force transforms particles

1) 2 of 2 Discussion on electroweak interactions

0 minutes   : introduction

2 minutes   : the weak interaction

4 minutes   : gauge theory

6 minutes   : unitarity

11 minutes : electroweak field

13 minutes : questions

2) 1 of 1 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

3) 1 of 1 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

4) 1 of 2 Discussion on the four fundamental forces

0 minutes   : how do forces work

3 minutes   : virtual particles

5 minutes   : the electro-magnetic force

7 minutes   : the range of the forces

11 minutes : the strong force

13 minutes : the weak force

14 minutes : gravity

4) 2 of 2 Discussion on the unification of the electric and the electroweak forces

0 minutes   : the four fundamental forces

2 minutes   : the Higgs boson

4 minutes   : beta decay of the neutron

6 minutes   : mass energy equivalence

11 minutes : the Higgs potential

13 minutes : the importance of the electro weak force

5) 1 of 1 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

6) 1 of 2 Lecture on the story of spacetime

6 minutes   : Newton's theory of gravity

11 minutes : Newton's reservations

22 minutes : general relativity

26 minutes : time

6) 2 of 2 Lecture on spacetime atoms

3 minutes   : thermo-dynamics

7 minutes   : entropy

19 minutes : black holes

50 minutes : accelerating expansion

7) 1 of 5 Discussion on baryons, mesons and quarks

0 minutes   : sub atomic physics

7 minutes   : nucleons

9 minutes   : the omega meson

10 minutes : what is the isospin of an antiparticle

13 minutes : the discovery of quarks

7) 2 of 5 Discussion on neutrinos

0 minutes : introduction

1 minutes : radioactive emission of an electron

2 minutes : measuring the mass of the particles

3 minutes : spin considerations

4 minutes : the concept of the neutrino

6 minutes : the concept of the antineutrino

8 minutes : detecting the neutrino

7) 3 of 5 Discussion on quantum electrodynamics

0 minutes   : where to start

1 minutes   : global and local

2 minutes   : external versus internal

3 minutes   : Nether's theorem

4 minutes   : conservation of electric charge

5 minutes   : quantum electro-magnetism

6 minutes   : symmetry of rotations

9 minutes   : quantum electrodynamics

10 minutes : anomalous magnetic dipole moment of the electron

7) 4 of 5 Discussion on quantum spin

0 minutes   : introduction

1 minutes   : intrinsic angular momentum

3 minutes   : orbital angular momentum

9 minutes   : angular momentum is quantised

12 minutes : half integer spin and integer spin

7) 5 of 5 Discussion on renormalisation in quantum mechanics

0 minutes : introduction

1 minutes : unspecified momenta leads to summation divergence

3 minutes : a simple analogy

8 minutes : renormalisation

8) 1 of 1 Lecture on string theory

16 minutes : winding number

25 minutes : radius compact-ification

33 minutes : duality equations

39 minutes : gravitational attraction (and repulsion)

44 minutes : gravity in five dimensions

1 hour and 0 minutes   : Kalb-Ramond field

1 hour and 29 minutes : 2-dimensional D-Branes

1 hour and 43 minutes : magnetic monopoles

9) 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

9) 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

9) 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

9) 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

9) 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

9) 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

9) 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

9) 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

9) 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

9) 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