Lecture 7 | Topics in String Theory

(February 28, 2011) Leonard Susskind gives a lecture on string theory and particle physics that continues the theory behind calculating the entropy of a black hole.
In the last of course of this series, Leonard Susskind continues his exploration of string theory that attempts to reconcile quantum mechanics and general relativity. In particular, the course focuses on string theory with regard to important issues in contemporary physics.
This course was originally presented in Stanford's Continuing Studies program. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University.
Stanford University:
www.stanford.edu/
Stanford Continuing Studies Program:
csp.stanford.edu/
Stanford University Channel on TH-cam:
/ stanford

[@joabrosenberg2961]

Gravity and string coupling constant; BH equations 23:00; String changing into a BH 27:00; The transition point 47:00; Entropy of BH proportional to area 1:00:00; Holographic principle and Max entropy 1:02:00; Event horizons in Cosmology 1:17:00;

[@backdraftvideos1180]

Why do we need to pay so much for college when we have free online lectures and public libraries?

[@Dilaton100]

Good lecture :-)
When Prof. Susskind says that space is continuously replenished in an expanding universe, are there some space quanta continuously created to achieve this ... ;-P ?
(could not hold that back maybe because the end of the year is too near; running away and hiding under a table now ...)
Happy New Year :-)

[@audreymciver3087]

we have everything we need and nothing that we dont.

[@apostolismoschopoulos1876]

Entropy is an adiabatic invariant ;doesn't change when you do things slowly.

[@gamingdork3681]

what happens when process are not adiabatic are the results same or they differ?

[@VideographerExperience]

In general, the entropy will change during a non-adiabatic process.

[@VideographerExperience]

[01:03:13] This episode s/b titled: They're Made Out Of Meat.

[@davidwilkie9551]

A POV of how to expect Unity in Principle, the Black Hole Reciproction-recirculation Singularity positioning Sublimation mechanism is the Holographic picture of instantaneous superposition resonances bonding orbital-orbits of trancendental AM-FM QM-TIME Duration Timing Conception, a projection-drawing of e-Pi-i pure-math-> logarithmic condensation wave-packaging-> holographycrystallisation state Relativity rates, ie probability in potential possibilities-> Math-Phys-Chem and Geometrical phase-locked coherence-cohesion objective-aspects of ONE-INFINITY, this Space-time Temporal Thermodynamic Singularity.

[@Dyslexic-Artist-Theory-on-Time]

Could quantum mechanics represent the passage or Arrow of Time?
This theory is based on just two postulates,
1.The first is that the quantum wave particle function explained by Schrödinger’s wave equation represents the forward passage of time or Arrow of Time itself photon by photon, quanta by quanta or moment by moment.
2. The second is that Heisenberg’s Uncertainty Principle that is formed by the wave function is the same uncertainty we have with any future event.
No strings!

[@Dyslexic-Artist-Theory-on-Time]

@@jay.u I don’t disagree with a lot of what you say, the wave function Ψ² with entropy is one of the few thing that has a direction in time. Also the Uncertainty Principle can be reformulated between energy and time ∆E ∆t ≥ h/2π. Only the interpretation change in this theory with the mathematics of Quantum Mechanics representing the physics of time.

[@grunder20]

what does STRING THEORY really mean?