Showing posts with label Physics. Show all posts
Showing posts with label Physics. Show all posts

Thursday, April 28, 2016

Tom Foxon: Blue LEDs and Nobel Prize



  • Isamu Akasaki
  • Hiroshi Amano
  • Shuji Nakamura
  • Blue light emitting diode
  • conduction band
  • carriers
  • p-type - holes
  • n-type - electrons
  • 1.4 electron volts
  • Gallium Nitride - Ultra violet
  • Annealing



Wednesday, August 5, 2015

Wednesday, July 29, 2015

Roger Penrose (ロジャー・ペンローズ): What does Quantum Theory Mean?

Roger Penrose

  • Phase factor
  • Quantum superposition (重ね合わせ)
  • Vacuum state (真空状態)

Rafael Sorkin: How Interconnected is the Quantum World

Rafael Sorkin


  • Path integral formulation (経路積分)
  • Probability measure (確率測度)

Lee Smolin: Time Reborn

Lee Smolin


  • Anaximander
  • Questions are the edges of our knowledges
  • Does time emerge from timeless law?
  • Is the future already determined?
  • Do we have more or less freedom as we grow older?

Sylvester James Gates: Computer Code in String Theory

James Gates


Relating Doubly-Even Error-Correcting Codes, Graphs, and Irreducible Representations of N-Extended Supersymmetry

Monday, July 27, 2015

Max Tegmark: Thermodynamics, Information & Consciousness in a Quantum Multiverse

Max Tegmark

  • Copenhagen interpretation
  • Modified Newtonian dynamics
  • Many-worlds interpretation
  • Consistent histories
  • De Broglie-Bohm theory
  • Relational quantum mechanics
  • Modal interpretation

Murray Gell-Mann: Talks about Richard Feynman

Murray Gell-Mann

Hans Bethe

Hans Bethe

Hideki Yukawa (湯川秀樹): Yukawa Story (湯川物語) (1954)

Hideki Yukawa

Wednesday, July 22, 2015

Tuesday, July 21, 2015

Linear motion with uniform acceleration (等加速度直線運動)



Linear motion with constant acceleration, 等・加速度・直線・運動

Sunday, July 19, 2015