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53:59 Stanford University English 2012

Special Relativity | Lecture 2

(April 16, 2012) Leonard Susskind starts with a brief review of what was discussed in the first lecture -- specifically the use of vectors and spin in three dimensional space and in relation to special relativity. In 1905, while only twenty-six years old, Albert Einstein published "On the Electrodynamics of Moving Bodies" and effectively extended classical laws of relativity to all laws of physics, even electrodynamics. In this course, Professor Susskind takes a close look at the special theory of relativity and also at classical field theory. Concepts addressed here include space-time and four-dimensional space-time, electromagnetic fields and their application to Maxwell's equations.
  • Published: 2012
  • Publisher: Stanford University
  • Language: English
2:21:07 Foundation for Fundamental Research on Matter (FOM) English 2014

Master class with Andreas Heinrich

We all learn in quantum mechanics lectures how to treat the spin of an electron using the Pauli matrices of an S=1/2 system. However, the magnetic properties of atoms in gas and in particular those in a solid-state environment or in molecules are often much more complex and interesting. We will begin by trying to understand what happens when the spin of a quantum system is larger than S=1/2 at which point ligand fields (crystal fields in solids) become important and lead to important effects such as magnetic anisotropy. We will then move from the treatment of a single spin system to coupled spins. How do you set up spin matrices for such a situation and how do you find solutions to those problems? We will discuss some experimental findings about spin chains on surfaces as studied by STM. If time permits we will try to apply the concepts of coupled spin systems to quantum computation.
  • Published: 2014
  • Publisher: Foundation for Fundamental Research on Matter (FOM)
  • Language: English
1:12:43 Phillies, George English 2012

18 Colloid Dynamics

Lecture 18 - colloid dynamics, a topic rarely included in discussions of polymer dynamics. The forces are the same; the particle shapes are different. George Phillies lectures on polymer dynamics, based on his book "Phenomenology of Polymer Solution Dynamics".
  • Published: 2012
  • Publisher: Phillies, George
  • Language: English
28:41 University of Cambridge English 2013

Soft particles

A lecture given by Toshihiro Tsuchiyama, at the Adventures in the Physical Metallurgy of Steels (APMS) conference held in Cambridge University. How particles such as copper, which can be penetrated by dislocations in the ferrite, influence the properties. The second phases in steel, such as carbide, oxide, martensite, and so on, are usually used for enhancing work hardening to prevent the plastic instability during deformation. These hard structures are effective for increasing uniform elongation, but conversely, it tends to deteriorate the local elongation and reduction of area. To improve both uniform and local deformabilities, it would be desirable that the work hardening is enhanced by dispersed second phase in the initial stage of deformation, and then it disappears or becomes invalid in the higher strain region, leading to work softening. Authors believe that soft particles is one of possibilities to exhibit such a functional change and call it hetero-to-homo structural transition. In this report, the effect of soft Cu precipitates on tensile deformation behaviour of ferritic steel will be compared with that of hard VC carbide precipitates. In addition, the plastic deformation and mechanical dissolution behaviour of Cu particles by severe cold rolling will be demonstrated.
  • Published: 2013
  • Publisher: University of Cambridge
  • Language: English
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