PIRSA:C04001 - Perimeter Public LecturesPODCAST Subscribe to podcast

Perimeter Public Lectures

Organizer(s): John Matlock  

Collection URL: http://pirsa.org/C04001

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PIRSA:06090000  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Impossible Crystals
Speaker(s): Paul Steinhardt
Abstract: This is a story of how the impossible became possible. How, for centuries, scientists were absolutely sure that solids (as well as decorative patterns like tiling and quilts) could only have certain symmetries - such as square, hexagonal and triangular - and that most symmetries, including five-fold... read more
Date: 06/09/2006 - 7:00 am

PIRSA:06100005  ( MP4 Medium Res , MP3 , PDF ) Which Format?
A Madman Dreams of Turing Machines: Limits of Truth and Mind
Speaker(s): Janna Levin
Abstract: From Levin’s recent book comes a strange if true story of coded secrets, psychotic delusions, mathematics, and war. This story of greatness and weakness, of genius and delusion, circulates around the parallel lives of Kurt Gödel, the greatest logician of many centuries, and Alan Turing, the extrao... read more
Date: 04/10/2006 - 7:00 pm

PIRSA:06110043  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Time and Motion
Speaker(s): Harvey Brown
Abstract: Newton's first law of motion - and the very meaning of inertia - has been described as either completely obvious (D'Alembert) or a 'logician's nightmare' (ex-editor of the American Journal of Physics). Sometimes the simplest things in physics are the most subtle. The first law will be described in h... read more
Date: 01/11/2006 - 7:00 pm

PIRSA:06120045  ( MP4 Medium Res , MP3 , PDF ) Which Format?
From here to eternity: Global warming in geologic time
Speaker(s): David Archer
Abstract: Using results from models of the atmosphere/ocean/sediment carbon cycle, the impacts of fossil-fuel CO2 release will be examined – including the effect on climate many thousands of years into the future, rather than for just a few centuries as commonly claimed. Prof. Archer will explain how aspects... read more
Date: 06/12/2006 - 7:00 pm

PIRSA:07020013  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Fundamental Physics in 2010
Speaker(s): Nima Arkani-Hamed
Abstract: Will big questions be answered when the Large Hadron Collider (LHC) switches on in 2007? What will scientists find? Where might the research lead? Nima Arkani-Hamed, a noted particle theorist, is a Professor of Physics at Harvard University. He investigates a number of mysteries and interactions in ... read more
Date: 07/02/2007 - 7:00 pm

PIRSA:07030020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Life, the Universe, and the Search for Extraterrestrial Intelligence (SETI)
Speaker(s): Jill Tarter
Abstract: Hollywood movies about aliens abound, but do they really exist? The real scientific search for evidence of life, and particularly intelligent life, elsewhere in the cosmos is just as exciting as the “reel” version, and a lot more logical. So far, there is ‘life-as-we-know-it’ to guide our specul... read more
Date: 07/03/2007 - 7:00 pm

PIRSA:07040020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum Cryptography: A Tale of Secrets Hidden and Revealed Through the Laws of Physics
Speaker(s): Daniel Gottesman
Abstract: Sensitive information can be valuable to others - from your personal credit card numbers to state and military secrets. Throughout history, sophisticated codes have been developed in an attempt to keep important data from prying eyes. But now, new technologies are emerging based on the surprising la... read more
Date: 04/04/2007 - 7:00 pm

PIRSA:07060066  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Death of the Dinos: Giant Impacts and Biological Crises
Speaker(s): Jay Melosh
Abstract: Sixty-five million years ago dinosaurs ruled the warm Cretaceous Earth. Without warning, this world was swept away forever by the impact of an asteroid about 15 km in diameter, leaving a huge scar now called the Chicxulub crater in Yucatan, Mexico. This catastrophe set the stage for the ascendance o... read more
Date: 06/06/2007 - 7:00 pm

PIRSA:07100041  ( MP4 Medium Res , MP3 , PDF ) Which Format?
From Einstein's Intuition to Quantum Bits
Speaker(s): Alain Aspect
Abstract: Many experts are convinced that large scale, practical implementations of quantum information systems hold great promise for society, much as the laser and the transistor have already revolutionized the world. This stems from a long history of research that included an intense, raging battle of epic... read more
Date: 03/10/2007 - 7:00 pm

PIRSA:07110080  ( MP4 Medium Res , MP3 , PDF ) Which Format?
The Large Hadron Collider - World's Most Powerful Microscope
Speaker(s): Robert Orr, John Ellis
Abstract: "International researchers at the Large Hadron Collider (LHC), in Geneva, Switzerland, will soon embark on one of science's greatest adventures. With its very high energy, previously seen only in cosmic rays, the particle collider will probe the inner structure of matter at distances ten times small... read more
Date: 07/11/2007 - 7:00 pm

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