Difference and Repetition

Deleuze, G. Diferenca e Repetição: unofficial version of the book Difference and Repetition in Portuguese.
link


Difference and Repetition is a book written by the philosopher Gilles Deleuze. Originally published in 1968 in France under the title Différence et Répétition it was translated into English in 1994. Difference and Repetition was Deleuze's principal thesis for the Doctorat D'Etat alongside his secondary, historical thesis, Expressionism in Philosophy: Spinoza (published the same year). The work forwards a critique of representation. In the book, Deleuze develops the concepts of difference in itself and repetition for itself, that is concepts of difference and repetition that are prior to identity. It has been suggested that the book is Deleuze's attempt at a rewriting of Kant's Critique of Pure Reason from the point of view of genesis.

http://en.wikipedia.org/wiki/Difference_and_Repetition

Feynman Diagram

http://www.bbc.co.uk/programmes/b00ts5mm

http://www.bbc.co.uk/archive/feynman/10700.shtml



The Feynman Variations
By Hamish Johnston at:
http://physicsworld.com/blog/2010/09/the_feynman_variations.html

The BBC has a wealth of archive material at its disposal – everything from Led Zeppelin performances to television programmes featuring the late physicist Richard Feynman.
The latter was featured earlier this week on the BBC Radio 4 show The Archive Hour, presented by particle physicist and media darling Brian Cox.
“As curious as he was clever”, is how Cox describes Feynman. In an archive recording, Hans Bethe calls Feynman “a magician”.
Feynman (1919–1988) is widely celebrated as the greatest physicist of his generation – the first generation after the founding of quantum mechanics.
Heisenberg, Shrödinger and Dirac were a tough act to follow, but Feynman did so with remarkable flair. He developed the path integral formulation of quantum mechanics, shared the 1965 Nobel prize for his work on quantum electrodynamics, and brought us Feynman diagrams...

more at:
http://physicsworld.com/blog/2010/09/the_feynman_variations.html









http://en.wikipedia.org/wiki/Feynman_diagram

In theoretical quantum physics, a physical quantity —like a scattering cross section —is often calculated using the so-called perturbation theory, where the quantity is represented as an infinite series, that is, a sum of ever decreasing terms. A Feynman diagram is an intuitive graphical representation of a term in this series.

links:
http://www2.slac.stanford.edu/vvc/theory/feynman.html

physicsworld.com

physicsworld.com

'physics' world' is a portal where we can find news and information for the global physics community from IOP Publishing

http://physicsworld.com

NSQI at the University of Bristol

(Left) Nobel Laureate Heinrich Rohrer declared the centre officially open. Photo credit: Jesse Karjalainen. (Right) The NSQI centre itself – the labs are out of sight and sound in the basement.

reference:
http://nanotechweb.org/cws/article/tech/43832

This week was the scientific opening of the Centre for Nanoscience and Quantum Information (NSQI) at the University of Bristol. The event coincided with the Bristol Nanoscience Symposium 2010, and featured great talks from some of the pioneers of nanoscience and nanotechnology.

http://www.bristol.ac.uk/nsqi-centre/

The first NSQI-based research paper goes online
17 September 2010

Samantha Pitt and colleagues from the research group of Rebecca Sitsapesan have published the first scientific paper, containing results collected from the Centre for NSQI. The paper, "TPC2 is a novel NAADP-sensitive Ca2+-release channel, operating as a dual sensor of luminal pH and Ca2+" has been published online and will appear in print later this year in the Journal of Biological Chemistry.


The paper is available at
http://www.jbc.org/content/early/2010/08/18/jbc.M110.156927.abstract?sid=645e8e50-44a2-460a-8af1-b4ccb1dc564a