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2:01:09 Stanford University English 2013

Cosmology | Lecture 7

(February 25, 2013) Leonard Susskind examines one of the fundamental questions in cosmology: why are there more protons than anti-protons in the universe today? The answer lies in theory of baryogenesis in the very early universe.
  • Published: 2013
  • Publisher: Stanford University
  • Language: English
1:09:33 CityTV.nl, Foundation for Fundamental Research on Matter (FOM) English 2011

Master class II with David Quéré

Two hundreds years ago, Thomas Young understood how the solid/liquid contact is dictated by surface forces. Our plan is to discuss how the solid roughness modifies (quite dramatically) this law. Roughness can be either accidental, or set at a surface with micro-machined extures, which decides the resulting properties: super-hydrophilicity, water repellency, slip, anti-fogging properties, etc. We present recent developments in this lively field of surface science.
  • Published: 2011
  • Publisher: CityTV.nl, Foundation for Fundamental Research on Matter (FOM)
  • Language: English
31:33 University of Cambridge English 2013

Atoms in bainite, atomic mechanisms: APMS conference

A lecture given by Francisca Garcia Caballero, at the Adventures in the Physical Metallurgy of Steels (APMS) conference held in Cambridge University. The atomic mechanism of the bainite transformation is discussed in the context of the highest resolution analytical experiments conceivable. After decades of debate on the mechanism for the formation of bainite, it is accepted that bainite grows via a displacive mechanism i.e., as plate-shaped transformation products exhibiting an invariant plane strain surface relief effect. But there is still much discussion on the diffusion or diffusionless nature of bainite. Elements of the theory are now routinely being used in the design of innovative steels and in the interpretation of a variety of experimental data. However, current experimental and theoretical understanding is limiting technological progress. The purpose of this atom probe tomography study was to track the atom distributions during the bainite reaction in steels with different carbon and silicon contents transformed over a wide range of temperatures (200-525 centigrade) to elucidate the role of reaction rate and diffusion in the formation of bainite with and without cementite precipitation. The results are providing new experimental evidence on subjects critically relevant to the understanding of the atomic mechanisms controlling bainitic ferrite formation, such as the incomplete transformation phenomenon, the carbon supersaturation of ferrite, the plastic accommodation of the surrounding austenite and cluster and carbides formation.
  • Published: 2013
  • Publisher: University of Cambridge
  • Language: English
1:45:46 Stanford University English 2011

String Theory and M-Theory | Lecture 3

(October 4, 2010) Professor Leonard Susskind reviews harmonic oscillators, the spin of massless particles (photons and gravitons), the low lying spectrum of strings, the tachyon problem, and the basics of string interactions. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle.
  • Published: 2011
  • Publisher: Stanford University
  • Language: English
1:59:28 Stanford University English 2010

New Revolutions in Particle Physics: Basic Concepts | Lecture 3

(October 19, 2009) Leonard Susskind gives the third lecture of a three-quarter sequence of courses that will explore the new revolutions in particle physics. In this lecture he talks about what a quantum field is and how it is related to particles.
  • Published: 2010
  • Publisher: Stanford University
  • Language: English
49:09 Stanford University English 2010

New Revolutions in Particle Physics: Standard Model | Lecture 3

(January 25, 2010) Leonard Susskind, discusses the rotation of space.
  • Published: 2010
  • Publisher: Stanford University
  • Language: English
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