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Παρασκευή 14 Ιουλίου 2017

Q&A - The Mysterious Architecture of the Universe - with J Richard Gott

           

Q&A - The Mysterious Architecture of the Universe - with J Richard Gott

Δημοσιεύτηκε στις 12 Ιουλ 2017

J
Richard Gott and Astronomer Royal Lord Martin Reese answer questions
from the audience following the main event. Can 'emergent gravity'
explain dark matter and dark energy? Do academics agree on this view of
the Universe?
Watch the talk here: https://youtu.be/s9AuqxSVHUY
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

J.
Richard Gott was among the first cosmologists to propose that the
structure of our Universe is like a sponge made up of clusters of
galaxies intricately connected by filaments of galaxies – a magnificent
structure now called the 'cosmic web'. In this talk he will show how
ambitious telescope surveys such as the Sloan Digital Sky Survey are
transforming our understanding of the cosmos, and how the cosmic web
holds vital clues to the origins of the universe and the next trillion
years that lie ahead.

J Richard Gott is Emeritus Professor of
Astrophysical Sciences at Princeton University and is noted for his
contributions to cosmology and general relativity.

Lord Martin
Rees is a Fellow of Trinity College and Emeritus Professor of Cosmology
and Astrophysics at the University of Cambridge. He holds the honorary
title of Astronomer Royal and also Visiting Professor at Imperial
College London and at Leicester University. After studying at the
University of Cambridge, he held post-doctoral positions in the UK and
the USA, before becoming a professor at Sussex University. In 1973, he
became a fellow of King's College and Plumian Professor of Astronomy and
Experimental Philosophy at Cambridge (continuing in the latter post
until 1991) and served for ten years as director of Cambridge's
Institute of Astronomy. From 1992 to 2003 he was a Royal Society
Research Professor, and then from 2004 to 2012, Master of Trinity
College. In 2005 he was appointed to the House of Lords, and he was
President of the Royal Society for the period 2005-10.

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The Mysterious Architecture of the Universe - with J Richard Gott

            

The Mysterious Architecture of the Universe - with J Richard Gott

Δημοσιεύτηκε στις 12 Ιουλ 2017

J
Richard Gott leads a journey through the history of our understanding
of the Universe’s structure, and explains the ‘cosmic web’: the idea
that our Universe is like a sponge made up of clusters of galaxies
intricately connected by filaments of galaxies.
Watch the Q&A here: https://youtu.be/B4duk3RiQzA
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

J
Richard Gott was among the first cosmologists to propose that the
structure of our Universe is like a sponge made up of clusters of
galaxies intricately connected by filaments of galaxies – a magnificent
structure now called the 'cosmic web'. In this talk he shows how
ambitious telescope surveys such as the Sloan Digital Sky Survey are
transforming our understanding of the cosmos, and how the cosmic web
holds vital clues to the origins of the universe and the next trillion
years that lie ahead.

J Richard Gott is Emeritus Professor of
Astrophysical Sciences at Princeton University and is noted for his
contributions to cosmology and general relativity.

The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://richannel.org/home/editorial-p...
Subscribe for the latest science videos: http://bit.ly/RiNewsletter
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 15/7/2017

Sean Carroll - The Particle at the End of the Universe

             

Sean Carroll - The Particle at the End of the Universe

Δημοσιεύτηκε στις 18 Ιαν 2013

It
was the universe's most elusive particle, the linchpin for everything
scientists dreamed up to explain how stuff works. It had to be found.
But projects as big as CERN's Large Hadron Collider don't happen without
dealing and conniving, incredible risks and occasional skullduggery.
Help us add subtitles to this lecture: http://www.youtube.com/timedtext_vide...

Award-winning
physicist and science popularizer Sean Carroll reveals the
history-making forces of insight, rivalry, and wonder that fuelled the
Higgs search and how its discovery opens a door into the mind-boggling
domain of dark matter and other phenomena we never predicted.

Watch the event Q&A: http://www.youtube.com/watch?v=aom5Si...

Check out Sean's website: http://preposterousuniverse.com

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ΥΠΟΛΟΓΙΣΜΟΣ ΑΡΙΘΜΟΥ ΕΓΚΕΦΑΛΙΚΩΝ ΚΥΤΤΑΡΩΝ


ΥΠΟΛΟΓΙΣΜΟΣ ΑΡΙΘΜΟΥ ΕΓΚΕΦΑΛΙΚΩΝ ΚΥΤΤΑΡΩΝ ΕΝΗΛΙΚΑ

Τετάρτη 12 Ιουλίου 2017

Neutrinos - Sixty Symbols

      

Neutrinos - Sixty Symbols

Δημοσιεύτηκε στις 15 Ιουν 2010
Billions of these mysterious particles are blasted down from the sun and pass through our bodies undetected. More videos at http://www.sixtysymbols.com/

Neutrinos: Messengers from a Violent Universe

     

Neutrinos: Messengers from a Violent Universe

Δημοσιεύτηκε στις 19 Ιαν 2017

In
this 45-minute presentation Alex Himmel, Wilson Fellow at Fermi
National Accelerator Laboratory, explains how neutrinos might provide
the answers to many questions that scientists have about the universe.
The neutrino is a type of subatomic particle. They are produced in
copious quantities by celestial objects -- trillions of neutrinos from
the sun will pass through your body while you read this sentence -- but
they interact so rarely with other particles that only a handful will
strike an atom in your body during your entire life. Yet these benign
little particles can tell us about some of the most energetic processes
in the universe. In order to detect these elusive particles, scientists
build enormous particle detectors deep underground, using tanks full of
liquid argon in an old gold mine as well as a cubic kilometer of
Antarctic ice. In this talk Himmel works his way from the sun to
galactic supernovae to the possible extragalactic sources of the
highest-energy neutrinos ever observed. Himmel also answers audience
questions from members of the Naperville Astronomical Association.

DARK MATTER AND MODIFIED GRAVITY - SEAN CARROLL

     



DARK MATTER AND MODIFIED GRAVITY  - SEAN CARROLL

ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 13/7/2017