'A Universe From Nothing' by Lawrence Krauss 2009
The Theory of Anything etc
Richard
Dawkins
Cosmology
Physics
Astronomy
Quantum
Physics
String
Theory
General
Relativity
Cosmic
Background
Ra
Channels:
Major questions in astronomy
Added: 717 days ago by
lonewolf
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The Universe is a strange place
About the Lecture Perhaps the universe is not so much strange as brimming with lovely paradox. The search for such beauty seems to lie at the heart of Frank Wilczek’s work. Twentieth century physics, from Einstein through Wilczek’s own Nobel Prize-winning efforts, involves demonstrating the existence of a topsy-turvy reality: for instance, that such sub-atomic particles as quarks and gluons, which have little or no mass, “orchestrate themselves into not just protons and neutrons but you and me,” according to Wilczek. “How is it possible to construct heavy objects out of objects that weigh nothing?,” he asks. Only by “creating mass out of pure energy.” These particles are essentially “excitations in otherwise empty space.” Says Wilczek: “That suggests something …beautiful and poetic: the masses of particles are not like, or similar to or metaphorically suggested by—they are the tones or frequencies of vibration patterns in dynamical voids.” The theory of quarks and gluons and the strong interaction accounts quantitatively for “the mass of protons, neutrons and ultimately you and me and everything around us.” But physics has not yet squared away all aspects of the universe. Wilzcek says that “in cosmology, we meet our match, and don’t know what’s going on.” This is because scientists can’t account for much of the mass in the cosmos. 70% of this mass is in “dark energy,” which is pushing the universe apart. Wilczek hopes that explanations for the dark stuff will emerge through improving equations, unifying theories of different interactions and extending their symmetries. “Beautifying equations leads not to ugly consequences but beautiful surprises,” he concludes.
About
the
Lecture
Perhaps
universe
is
not
so
much
strange
as
brimming
with
lovely
paradox.
The
search
for
such
beauty
seems
to
lie
at
heart
of
Frank
Wilczek’s
work.
Twentieth
century
physics
from
Einstein
through
own
Nobel
Prize-winning
efforts
involves
demonstrating
existence
topsy-turvy
reality:
instance
that
sub-atomic
particles
quarks
and
gluons
which
have
little
or
no
mass
“orchestrate
themselves
into
just
protons
neutrons
but
you
me
according
Wilczek.
“How
it
possible
construct
heavy
objects
out
weigh
nothing
he
asks.
Only
by
“creating
pure
energy.”
These
are
essentially
“excitations
in
otherwise
empty
space.”
Says
Wilczek:
“That
suggests
something
…beautiful
poetic:
masses
like
similar
metaphorically
suggested
by—they
tones
frequencies
vibration
patterns
dynamical
voids.”
theory
strong
interaction
accounts
quantitatively
“the
ultimately
everything
around
us.”
But
has
yet
squared
away
all
aspects
universe.
Wilzcek
says
“in
cosmology
we
meet
our
match
don’t
know
what’s
going
on.”
This
because
scientists
can’t
account
cosmos.
70
this
“dark
energy
pushing
apart.
Wilczek
hopes
explanations
dark
stuff
will
emerge
improving
equations
unifying
theories
different
interactions
extending
their
symmetries.
“Beautifying
leads
ugly
consequences
beautiful
surprises
concludes.
Channels:
Lectures In Astronomy
Cosmology
Major questions in astronomy
Added: 718 days ago by
deek
Runtime: 00:01 |
Views: 1210 |
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Lawrence Krauss Discussion (1/12) - Richard Dawkins
Richard Dawkins and Lawrence Krauss sat down for a public discussion at Stanford University on Sunday, March 9th 2008. The focus was on Science education, but the discussion also covered religion, physics, evolution and more.
Science
&
Technology
Richard
Dawkins
Lawrence
Krauss
Teaching
Science
Evolution
Quantum
Physics
Religion
Channels:
Our Enterprise
Added: 719 days ago by
lonewolf
Runtime: 01:00 |
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Lecture 1 | Modern Physics: Special Relativity (Stanford)
Lecture 1 of Leonard Susskind's Modern Physics course concentrating on Special Relativity. Recorded April 14, 2008 at Stanford University. This Stanford Continuing Studies course is the third of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Complete Playlist for the Course: http://www.youtube.com/view_play_list... Stanford Continuing Studies: http://continuingstudies.stanford.edu/ About Leonard Susskind: http://www.stanford.edu/dept/physics/... Stanford University Channel on YouTube: http://www.youtube.com/stanford Category: Education Tags: Physics math calculus geometry algebra theoretical minimum special relativity classical field theory reference frame uniform velocity Newton Laws of nature speed light wave maxwell space time Einstein hyperbolic functions cos
Physics
math
calculus
geometry
algebra
theoretical
minimum
special
relativity
classical
field
theory
referen
Channels:
Lectures In Astronomy
Added: 732 days ago by
deek
Runtime: 01:00 |
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The Dancing Wu Li Masters by Gary Zukav
2 hr 41 min audio summary by author - Gary Zukav has written "the Bible" for those who are curious about the mind-expanding discoveries of advanced physics, but who have no scientific background. Like a Wu Li Master who would teach us wonder for the falling petal before speaking of gravity, Zukav writes in beautifully clear language--with no mathematical equations--opening our minds to the exciting new theories that are beginning to embrace the ultimate nature of our universe...Quantum mechanics, relativity, and beyond to the Einstein-Podolsky-Rosen effect and Bell's theorem. "Reality is what we take to be true. What we take to be true is what we believe. What we believe is based upon our perceptions. What we perceive depends upon what we look for. What we look for depends upon what we think. What we think depends upon what we perceive. What we perceive determines what we believe. What we believe determines what we take to be true. what we take to be true is our reality." EVERYTHING IS CONNECTED :)
Channels:
Major questions in astronomy
Added: 737 days ago by
lonewolf
Runtime: 01:00 |
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Cosmology Quest 2 - Plasma Cosmology - Part 1 of 5
Part 2: http://www.youtube.com/watch?v=wchV5R9NhqY Part one of the second section of the cosmology quest documentary. http://www.universe-film.com/ hannes alfven, eric lerner, anthony peratt, kristian birkeland, charles bruce, halton arp
plasma
cosmology
electric
universe
big
bang
bounce
redshift
alfven
physics
science
galaxy
astronomy
birkeland
current
Channels:
Major questions in astronomy
Added: 746 days ago by
deek
Runtime: 01:00 |
Views: 321 |
Comments: 1
Cosmology Quest 2 - Plasma Cosmology - Part 5 of 5
public.lanl.gov www.universe-film.com Hosted at the IEEE: "Two world systems revisited: a comparison of plasma cosmology and the Big Bang" ieeexplore.ieee.org Full text can be read here: bigbangneverhappened.org hannes alfven, eric lerner, anthony peratt, kristian birkeland, charles bruce, halton arp
plasma
cosmology
electric
universe
big
bang
bounce
redshift
alfven
physics
science
galaxy
astronomy
birkeland
current
Channels:
Major questions in astronomy
Added: 746 days ago by
deek
Runtime: 01:00 |
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Cosmology Quest 2 - Plasma Cosmology - Part 2 of 5
Part 3 www.youtube.com www.universe-film.com hannes alfven, eric lerner, anthony peratt, kristian birkeland, charles bruce, halton arp
plasma
cosmology
electric
universe
big
bang
bounce
redshift
alfven
physics
science
galaxy
astronomy
birkeland
current
Channels:
Major questions in astronomy
Added: 746 days ago by
deek
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Energy From Thorium: A Nuclear Waste Burning Liquid Salt Thorium Reactor
<http://www.energyfromthorium.com/lftradsrisks.html> _ Successfully developing a liquid-fluoride thorium reactor (LFTR) would essentially solve our planets energy problems for thousands of years, because it would allow us to fully utilize the energy in natural thorium, which makes up 0.0012% of the Earths crust. Most of the research and development work for this technology was done by Oak Ridge National Labs back in the 50s and 60s. They were working to a different set of overall objectives, nevertheless, there are many lessons to be gleaned from their work that can help us to avoid pitfalls and develop LFTR into a high-performance, high-reliability power supply. ___________________ We need to form a consortium to develop a pilot plant to dispose of nuclear waste and generate usable power. Clean the planet to buy the planet!
Nuclear
Physics
Electronics
Energy
Systems
Channels:
The Astronomers
Lectures In Astronomy
Major questions in astronomy
Ordono Mundi
Our Enterprise
Added: 765 days ago by
starnamer
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Liquid Fluoride Thorium Reactor
>http://www.energyfromthorium.com/lftradsrisks.html> _ We need to form a consortium to develop a pilot plant to dispose of nuclear waste and generate usable power. Clean the planet to buy the planet!______________________________ Google Tech Talks November 18, 2008 ABSTRACT Electrical power is, and will increasingly become, the desired form of energy for its convenience, safety, flexibility and applicability. Even future transportation embraces electric cars, trains, and chemical fuel production (jet fuel, hydrogen, etc.) based upon an abundant electrical supply. Although existing energy sources can and should be expanded where practical, no one source has shown to be practical to rapidly fulfill the world's energy requirements effectively. Presently there is an existing source of energy ideally suited to electrical energy production that is not being exploited anywhere in the world today, although its existence and practicality has been know since the earliest days of nuclear science. Thorium is the third source of fission energy and the LFTR is the idealized mechanism to turn this resource into electrical energy. Enough safe, clean energy, globally sustainable for 1000's of years at US standards. This talk is aimed at explaining this thorium energy resource from fundamental physics to today's practical applications. The presentation is sufficient for the non-scientist to grasp the whole subject, but will be intriguing to even classically trained nuclear engineers. By providing the historical context in which the technology was discovered and later developed into a power reactor, the story of thorium's disappearance as an energy source is revealed. But times have changed, and today, thorium energy can be safely exploited in a completely new form of nuclear reactor. The LFTR is unique, having a hot liquid core thus eliminating fuel fabrication costs and the need for a large reactor. It cannot have a nuclear meltdown and is so safe that typical control rods are not required at all. This design topples all the conventional arguments against conventional energy sources in such areas as: * Waste Production * Safety * Proliferation * Capital Costs and Location * Environmental Impact * Social Acceptance * Flexibility * Grid Infrastructure * Efficiency Should America take this step toward a New Era in Nuclear Energy Production? Hear the case for "The Electricity Rock" and then decide. Speaker: Dr. Joe Bonometti Dr. Bonometti has extensive engineering experience in the government, within industry, and in academia over a 25-year career. Recently completing an assignment as the NASA Chair Professor at the Naval Post graduate School, he supported a ship design study that utilized advanced nuclear power derived from thorium. Working at NASA for ten years as a technology manager, lead systems engineer, nuclear specialist, and propulsion researcher, he lead several NASA tiger teams in evaluating the Nuclear System Initiatives fission demonstration vehicle and missions. He managed the Emerging Propulsion Technology Area for in-space systems, the Marshall Air Launch team, as well as a variety of other power and propulsion assignments and is now the Lead Systems Engineer for the Ares I-Y flight. After earning a Doctorate degree in Mechanical Engineering from University of Alabama in Huntsville, he spent several years as a Research Scientist & Senior Research Engineer at the UAH Propulsion Research Center where he served as a Principal Investigator and manager for the Solar Thermal Laboratory. He has worked as a Senior Mechanical Designer at Pratt & Whitney supporting aircraft engine manufacturing and at the Lawrence Livermore National Laboratory within the laser fusion program. A graduate from the United States Military Academy, at West Point, where he studied nuclear physics and engineering, Dr. Bonometti served as an officer in the United States Army Corps of Engineers; both in combat and district engineering management assignments. He is a Registered Professional Engineer in the State of Virginia, and has authored numerous aerospace technical publications, particularly propulsion and space systems technologies. His technical expertise includes nuclear engineering, specialized mechanical & materials research, space plasmas & propulsion, thermodynamics, heat transfer, and space systems engineering. This Google Tech Talk was hosted by Boris Debic.
Nuclear
Physics
Electronics
Energy
Systems
Channels:
The Astronomers
Lectures In Astronomy
Major questions in astronomy
Ordono Mundi
Our Enterprise
Added: 765 days ago by
starnamer
Runtime: 01:00 |
Views: 248 |
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Strong Photon-Photon Interactions and Meta-Materials
ABSTRACT Fun with Light: Strong Photon-Photon Interactions and Meta-Materials Presented by Jung-Tsung Shen The lightsaber is a supercool gadget that all of us would like to get one. It exhibits many novel light phenomena, notably the light blades of two lightsabers could interact with each other. Unfortunately it takes an enormous amount of energy to achieve that. One of the main difficulties of making a lightsaber is that photons normally do not interact with each other. In the first part of the talk, I will describe how to make photons interact with each other, which enables the capability of using photons to control photons. This capability has many potential applications in quantum communication and information processing, and other novel optoelectronics devices. Moreover, the configuration is well-suited for on-chip all solid-state implementations. In the second part of the talk, I will briefly explain what metamaterials are, and some novel optical tricks they can play, such as Harry Potter's invisibility cloak and super lens. In particular, I will discuss the mechanisms and properties of a special class of metamaterials -- metamaterials with ultra-high refractive index. Such artificial structures will be useful in many applications such as subwavelength lithography and imaging, broadband slow-light, and sensitive interferometer. (* The talk is for general audience with no background in these fields. *) Dr. Jung-Tsung Shen is currently a research associate at Stanford University, working on photon transport in nano-photonics, metamaterials, plasmonics, and thermal and energy transport in nano-structures. He obtained his PhD degree in physics in 2003 from MIT. He was also a graduate scholar at Bell Labs from year 1998 -2001. He will be an assistant professor at Washington University in St. Louis in September this year.
Photon-Photon
Interactions,
Quantum
Physics,
Antimatter
Channels:
The Astronomers
Lectures In Astronomy
Major questions in astronomy
Ordono Mundi
Our Enterprise
Added: 773 days ago by
starnamer
Runtime: 01:00 |
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he 2008 Herzberg Lecture took place November 4, 2008 at Carleton University. Rolf-Dieter Heuer has been designated as the next Director General of CERN, the European Organization for Nuclear Research. He has contributed to the study of electron positron interactions, the development of experimental techniques, and the construction of large detector systems. Despite great success, many key questions in particle physics and cosmology are unanswered. In particular, some 95% of the Universe consists of unknown dark matter and dark energy. Particle physics is about to enter the Terascale, providing a deeper understanding of the Universe and possibly dramatically changing our view of the world. With the start-up of the Large Hadron Collider at CERN this year, we expect revolutionary results explaining the origin of matter, unraveling the nature of dark matter and providing glimpses of extra spatial dimensions or grand unification of forces and hints on dark energy.
High
Energy
Physics,
Hadron
Collider,
Antimatter
Channels:
The Astronomers
Cosmology
Ordono Mundi
Our Enterprise
Added: 773 days ago by
starnamer
Runtime: 01:00 |
Views: 272 |
Comments: 1
Atoms and the Periodic Table (1 of 15)
Episode 1 of In Search of Giants: Dr Brian Cox takes us on a journey through the history of particle physics. In this episode we learn that the Greeks knew about atoms and how Mendeleyev's periodic table was among the first clues that the atom had a deeper structure. This film is part of a series originally broadcast on Teachers' TV (http://www.teachers.tv/video/23645). The series was made with the support of The Science and Technology Facilities Council (www.scitech.ac.uk). www.lhc.ac.uk - Official UK LHC website for public and schools. www.particledetectives.net - School resources on the LHC, how science works and particle physics. Films produced and directed by Alom Shaha (www.labreporter.com).
CERN
LHC
Large
Hadron
Collider
Particle
Physics
atoms
periodic
table
Dr
Brian
Cox
Alom
Shaha
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 02:03 |
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1981 structure of the atom Nuclear Physics 10 Electrical Energy from Fission
I freely admit I half inched these from user stevebd1 - a great science channel. http://www.youtube.com/user/stevebd1 basic introductions and explanations on physics - particle, quantum, astro, nuclear, atomic etc. etc
stevebd1
physics
atomic
particle
electron
antielctron
proton
positron
neutron
neutrino
quark
gluon
boson
higgs
quantum
subatomic
nucleus
bequerel
nuclear
radiation
Rutherford
Bohr
Einstein
Feynman
decay
fission
fusion
charmed
strange
flavour
colour
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 05:11 |
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1981 Structure of the Atom 2 Smaller than the Smallest
I freely admit I half inched these from user stevebd1 - a great science channel. http://www.youtube.com/user/stevebd1 basic introductions and explanations on physics - particle, quantum, astro, nuclear, atomic etc. etc
stevebd1
physics
atomic
particle
electron
antielctron
proton
positron
neutron
neutrino
quark
gluon
boson
higgs
quantum
nucleus
subatomic
nuclear
radiation
bequerel
decay
charmed
Rutherford
Bohr
Einstein
Feynman
strange
flavour
colour
fission
fusion
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 08:47 |
Views: 238 |
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1981 Structure of the atom Nuclear Physics 7 The Discovery of Radioactivity
I freely admit I half inched these from user stevebd1 - a great science channel. http://www.youtube.com/user/stevebd1 basic introductions and explanations on physics - particle, quantum, astro, nuclear, atomic etc. etc
stevebd1
physics
atomic
particle
electron
antielctron
proton
positron
neutron
neutrino
quark
gluon
boson
higgs
quantum
subatomic
nuclear
radiation
decay
charmed
nucleus
bequerel
Rutherford
Bohr
Einstein
Feynman
fission
fusion
strange
flavour
colour
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:10 |
Views: 231 |
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Structure of the Atom 1: The Earliest Models
A video from the Senior physics Structure of the Atom series describing the earliest atom models. More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html
atom
nuclear
physics
quantum
mechanics
electron
nucleus
proton
neutron
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:04 |
Views: 1018 |
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Structure of the Atom 6: The Wave Mechanical Model
better sound quality- http://www.youtube.com/watch?v=IsA_oIXdF_8 Another dated yet informative video describing the wave mechanical model. More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html More info- http://en.wikipedia.org/wiki/Electron_configuration
atom
nuclear
physics
quantum
mechanics
electron
configeration
schrodinger
heisenberg
uncertainty
principle
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:08 |
Views: 220 |
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Structure of the Atom 2: Smaller than the Smallest
Another video from the Senior physics series looking at early nunclear research. More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html
dalton
chemical
atomic
theory
atom
nuclear
physics
quantum
mechanics
electron
nucleus
faraday
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 08:46 |
Views: 362 |
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Structure of the Atom 5: Spectra
Another video from the Structure of the Atom series regarding Spectra (video quality reduced due to resolution of source video being 160x120). Source- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html More info- http://en.wikipedia.org/wiki/Spectroscopy
nuclear
quantum
physics
atom
spectra
bohr
balmer
paschen
lyman
series
frequency
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:28 |
Views: 220 |
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Structure of the Atom 4: The Bohr Model
better sound quality- http://www.youtube.com/watch?v=hpKhjKrBn9s A very dated but informative educational video describing the Bohr model (electron configeration) which could be described as the birth of Quantum Mechanics. More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html More info- http://en.wikipedia.org/wiki/The_Bohr_Model
atom
nuclear
physics
quantum
mechanics
electron
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:08 |
Views: 237 |
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Structure of the Atom 6: The Wave Mechanical Model
Another dated yet informative video describing the wave mechanical model (re-uploaded with improved sound quality). More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html More info- http://en.wikipedia.org/wiki/Electron_configuration
atom
nuclear
physics
quantum
mechanics
electron
configeration
schrodinger
heisenberg
uncertainty
principle
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:08 |
Views: 253 |
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Ernest Rutherford sings his atomic theory
Musically transformed speech of Ernest Rutherford in 1931 discussing the features of atomic structure. Live musical performance by Topology and Loops.
rutherford
physics
atomic
linguistics
intonation
prosody
composition
proton
electron
nuclear
bohr
einstein
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 01:05 |
Views: 193 |
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The Discovery of the Atomic Nucleus (3 of 15)
Episode 3 of In Search of Giants: Dr Brian Cox takes us on a journey through the history of particle physics. In this episode we learn how Ernest Rutherford conducted a historical experiment that revealed that most of the mass of an atom is concentrated in a tiny nucleus made of protons and neutrons. This film is part of a series originally broadcast on Teachers' TV (http://www.teachers.tv/video/23645). The series was made with the support of The Science and Technology Facilities Council (www.scitech.ac.uk). www.lhc.ac.uk - Official UK LHC website for public and schools. www.particledetectives.net - School resources on the LHC, how science works and particle physics. Films produced and directed by Alom Shaha (www.labreporter.com).
CERN
LHC
Large
Hadron
Collider
Particle
Physics
nucleus
protons
neutrons
Rutherford
Dr
Brian
Cox
Alom
Shaha
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 03:28 |
Views: 206 |
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Structure of the Atom 3: The Rutherford Model
Another informative video from the Senior physics series describing the Rutherford model. More vids- http://www.shep.net/resources/curricular/physics/P30/Unit4/Unit4.html More info- http://en.wikipedia.org/wiki/Electron_configuration
atom
nuclear
physics
quantum
mechanics
electron
nucleus
proton
neutron
Channels:
The Astronomers
Added: 822 days ago by
deek
Runtime: 09:09 |
Views: 238 |
Comments: 0
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