Showing posts with label space-time. Show all posts
Showing posts with label space-time. Show all posts

Monday, November 25, 2013

Cosmic Origami and What We Don't Know - NPR's On Being

From this week's On Being podcast from NPR, hosted by Krista Tippett, a conversation with astrophysicist Lord Martin Rees on the science-fiction-like explorations in physics around parallel realities and the deep structure of space-time.


Cosmic Origami and What We Don't Know

November 21, 2013



Parallel realities and the deep structure of space-time sound like science fiction. These are matters of real scientific inquiry. Lord Martin Rees is an astrophysicist and self-professed atheist who paints a fascinating picture of how we might be changed by what we do not yet know.


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  • Radio Show/Podcast  - (mp3, 52:02)


  • Lord Martin Rees - Unedited Interview, (mp3, 87:41)


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    is Master of Trinity College and Professor of Cosmology and Astrophysics at the University of Cambridge


    2010 Reith Lectures: Scientific Horizons Listen to Martin Rees present his "Scientific Horizons" Reith Lectures in 2010 on the BBC, exploring the challenges facing science in the 21st century. The series was presented as four lectures:

    Pertinent Posts from the On Being Blog


    To Hold Contradiction in Our Hands Is What Makes Us Unique as Humans (Video)

    Robert Sapolsky asserts that humans have one trait that best defines and distinguishes us from other species: the ability to hold two contradictory ideas in our head, and yet continue on in the face of it.

    Production Credits

    Host/Producer: Krista Tippett
    Head of Content: Trent Gilliss
    Senior Producer: Lily Percy
    Technical Director/Producer: Chris Heagle

    Tuesday, January 10, 2012

    Lawrence Krauss on the Mysterious Allure of Extra Dimensions

    This is a cool lecture from Lawrence Krauss posted at Open Culture, via Richard Dawkins - the lecture is called Hiding in the Mirror: The Mysterious Allure of Extra Dimensions.

    Lawrence Krauss on the Mysterious Allure of Extra Dimensions





    In the world of everyday experience we perceive three dimensions of space. Through any point, no more than three perpendicular lines may pass. The notion that there might be more than three dimensions has traditionally been the domain of science fiction shows like The Twilight Zone.

    In this engaging lecture (click image above to watch), theoretical physicist Lawrence Krauss explains the growing respectability of extra-dimensional theories in physics, tracing the evolution of the idea from Plato’s cave through Edwin A. Abbott’s Flatland, and from Einstein-Minkowski spacetime through Kaluza-Klein theory, on into modern-day string theory.

    Titled “Hiding in the Mirror: The Mysterious Allure of Extra Dimensions,” Krauss’s presentation was given in September at a conference in Oslo, Norway, organized by the Fritt Ord Foundation. The speech lasts about an hour and is followed by a question-and-answer session.

    via Richard Dawkins

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    Tuesday, December 27, 2011

    Professor Brian Cox: A Night with the Stars

    Very cool . . . .




    Professor Brian Cox: A Night with the Stars
    For one night only, Professor Brian Cox goes unplugged in a specially recorded programme from the lecture theatre of the Royal Institution of Great Britain. In his own inimitable style, Brian takes an audience of famous faces, scientists and members of the public on a journey through some of the most challenging concepts in physics.

    With the help of Jonathan Ross, Simon Pegg, Sarah Millican and James May, Brian shows how diamonds – the hardest material in nature – are made up of nothingness; how things can be in an infinite number of places at once; why everything we see or touch in the universe exists; and how a diamond in the heart of London is in communication with the largest diamond in the cosmos.