Archive for August, 2012
Very interesting film about the history of venture capital. It all started with some guys working issues on the side. An amazing history of interest to anyone who wants to start their own company.
From the webpage summary
David Tong: Lectures on Quantum Field Theory
Video Lectures on Quantum Field Theory
These are videos of the lectures given at the Perimeter Institute PSI programme in 2009. Each video is in wmv format and somewhere around 130 Mb. More formats are available for download at the Perimeter Institute webpage here. http://pirsa.org/index.php?p=speaker&name=David_Tong
The lectures follow the printed notes which are available on the main quantum field theory webpage. http://www.damtp.cam.ac.uk/user/tong/qft.html
From YouTube summary
Named after the Rolling Stones' album Goats Head Soup, Sopa de Cabra are considered one of the pioneers of the Rock Catala movement. Previously of Ninyin's Mine Workers UnionBand, guitarist Joan "Ninyin" Cardona and bassist Francesc "Cuco" Lisicic teamed up with frontman Gerard Quintana, guitarist Josep Thio and drummer Josep "Pep" Bosch to form the band in 1986. Following two successful records, 1989's self-titled debut and 1990's La Roda, Sopa de Cabra cemented their status as Catalonia's biggest band with a historic concert at the Palau Sant Jordi in 1991, but went on to alienate much of their fan base with 1993's Spanish-sung flop Mundo Infierno. However, they soon restored their reputation with a string of critical and commercial success throughout the '90s before calling it a day shortly after 2001's Plou I Fa Sol. Just three months after their final show at the Razzmatazz Bar, founding member Cardona lost his battle with colon cancer, and four years later the group temporarily reconvened to record a new track in memory of its late guitarist, "Seguirem Somiant," which appeared on the tribute album Podré Tornar Enrere. In 2011, Sopa de Cabra announced a series of seven reunion shows in Barcelona, Girona, and Tarragona to celebrate their 25th anniversary. ~ Jon O'Brien, Rovi
The following video is how most Americans encounter Sopa de Cabra
If you know Spanish or Portuguese have fun trying to figure out the Catalan in the song.
Notes With Video
In a guest lecture at the University of Waterloo's Institute for Quantum Computing, Dr. Peter Milonni of the Los Alamos National Laboratory explains Casimir effects.
Casimir effects are generally regarded as manifestations of zero-point energies of quantum fields. The best-known Casimir effects are those associated with the electromagnetic vacuum field; these are of great current interest not only for basic physics but also for their implications for nanotechnology. Following a brief review of the concept of zero-point energy, and experimental evidence for it, attention is be focused on the most famous Casimir effect—the force between two perfectly conducting plates—and the extension of the theory to dielectric materials.
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A very good video because it brings zero point energy into the explanation of the Casimir effect.
My Notes here:
- This is a case where the hockey stick has true application.
- Shows the invariant term for spectra which is the sum of the Wave Term + Particle term