'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 |
Comments: 1
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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New Discovery about the Fabric of Space-Time
Scientists have turned up rare evidence that space-time is smooth as Einstein predicted, while pushing closer to a complete theory of gravity. From NASA Goddard Space Flight Center, Fermi Gamma Ray Space Telescope.
unified
theory
fermi
spacetime
smooth
Channels:
Major questions in astronomy
Added: 768 days ago by
lonewolf
Runtime: 01:00 |
Views: 222 |
Comments: 0
Basic Intro to M-theory (strings) in 2 minutes
string theory
Channels:
Major questions in astronomy
Added: 768 days ago by
lonewolf
Runtime: 01:00 |
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Lec 1 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 1: The importance of chemical principles License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 27:30 |
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Lec 4 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 4: Wave-particle duality of matter, Schrödinger equation License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 45:09 |
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Lec 3 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 3: Wave-particle duality of light License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 48:22 |
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Lec 2 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 2: Discovery of electron and nucleus, need for quantum mechanics License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 47:10 |
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Lec 10 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 10: Periodic trends continued; Covalent bonds License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 48:04 |
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Lec 12 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 12: Exceptions to Lewis structure rules; Ionic bonds License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 50:36 |
Views: 213 |
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Lec 9 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 9: Periodic trends License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 50:07 |
Views: 235 |
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Lec 14 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 14: Molecular orbital theory License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 51:25 |
Views: 239 |
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Lec 5 | MIT 5.111 Principles of Chemical Science, Fall 2008
Lecture 5: Hydrogen atom energy levels License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
introductory
chemistry
atomic
structure
molecular
electronic
thermodynamics
acid-base
equillibrium
titration
redox
chemical
kinetics
catalysis
lewis
structures
VSEPR
theory
wave-particle
duality
biochemistry
orbitals
periodic
trends
general
valence
bond
hybridization
free
energy
reaction
mechanism
Rutherford
backscattering
Channels:
Lectures In Astronomy
Added: 822 days ago by
deek
Runtime: 47:45 |
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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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Big Bang Theory Addendum: Part Two - Introduction to Quantum Gravity
I will be discussing the basics of quantum gravity, why it is necessary, and two prominent quantum gravitational theories. In the next video I will apply these theories to cosmology to see how we can clear up the Planck-Era "question mark". Want to learn more about quantum gravity? Check out these resources: Loop Quantum Gravity: http://math.ucr.edu/home/baez/acm/acm.pdf http://en.wikipedia.org/wiki/Loop_quantum_gravity http://arxiv.org/pdf/hep-th/0408048v3 String Theory: http://www.superstringtheory.com/ Brian Greene, "The Elegant Universe" http://en.wikipedia.org/wiki/String_theory Music used: Nocturne No. 1 in F Sharp Minor (Rachmaninoff), Moment Musical Op. 16 No. 4 (Rachmaninoff)
Big
Bang
Theory
science
atheism
theism
evolution
creationism
creation
Channels:
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Added: 823 days ago by
deek
Runtime: 09:19 |
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Towards a Spin Foam Model of Quantum Gravity
NOTE: pdf link for transparencies- http://math.ucr.edu/home/baez/loops05/loops05.pdf Probably not everyones cup of tea. A clip from a lecture by John Baez in conjunction with the LOOPS 'O5 series by the Max Planck Institute of Gravitation (Albert Einstein Institute) regarding a proposal for quantum gravity (the clip appears to start at page 14 of the transparencies). Date- 11th Oct 05. Source- http://math.ucr.edu/home/baez/loops05/ LOOPS '05- http://loops05.aei.mpg.de/ 'Spin foam models include several different classes of physical theories: lattice gauge theories, dynamical triangulation models of quantum gravity, "chain mail" quantum field theories, and topological string theories. Is there a spin foam model of quantum gravity in 4 dimensions? To address this question, we review recent work on causal dynamical triangulations and the renormalization group. This suggests that quantum gravity is a well-defined theory with the curious property that spacetime is effectively 4-dimensional at large distance scales, but 2-dimensional at very short distance scales. This is just what one might expect from a spin foam model, since spacetime is fundamentally 2-dimensional in these theories. We discuss properties a spin foam model should have in order to approximate general relativity at large distance scales.'
quantum
gravity
general
relativity
grand
unified
theory
of
everything
GUT
TOE
john
baez
Channels:
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Added: 823 days ago by
deek
Runtime: 09:43 |
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UC Berkeley's Raphael Bousso presents a friendly introduction to the ideas behind the holographic principle, which may be very important in the hunt for a theory of quantum gravity. Series: "Lawrence Berkeley National Laboratory Summer Lecture Series" [3/2006] [Science] [Show ID: 11140]
Raphael
Bousso
holographic
theory
of
quantum
gravity
science
Channels:
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Added: 823 days ago by
deek
Runtime: 54:34 |
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1998 PBS A Science Odyssey 2 - Mysteries of the Universe 6 of 11
Things that have made us wonder. playlist link http://www.youtube.com/view_play_list?p=04CFF1488DFC69E5
halleys
comet
edmund
halley
astronomy
astronomer
physics
astrophysics
edwin
hubble
telescope
super
nova
red
shift
cephid
quasars
pulsars
neutron
stars
galaxystar
speed
light
relativity
special
einstein
niels
bohr
quantum
theory
schrodinger
entanglement
superposition
position
Channels:
The Astronomers
Added: 826 days ago by
deek
Runtime: 09:09 |
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The Library Of Alexandria - Best Of Carl Sagan's Cosmos (7)
The Library Of Alexandria - Best Of Carl Sagan's Cosmos (Part 7). --- Subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/SagansCosmos • http://www.youtube.com/FFreeThinker --- BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: http://www.youtube.com/watch?v=irVof7adq4s --- Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. http://www.carlsagan.com .
The
Library
Of
Alexandria
Egypt
Greece
Ancient
History
Best
Carl
Sagan
Sagans
Cosmos
Episode
Scientists
Science
Astronomy
Astronomer
Astrophysics
Universe
Education
SETI
Hubble
Images
Big
Bang
Space
Solar
System
Planets
Physics
Origin
Life
Human
Evolution
Lecture
Videos
Series
Einstein
Theory
Relativity
Time
Dilation
Albert
Black
Holes
Dark
Matter
Energy
Milky
Way
Galaxy
Atoms
Quarks
Speed
Light
Gravity
Channels:
The Astronomers
Added: 827 days ago by
deek
Runtime: 10:59 |
Views: 588 |
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Ancient Astronomy - Best Of Carl Sagan's Cosmos (17)
Ancient Astronomy - Best Of Carl Sagan's Cosmos (Part 17) --- Subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/SagansCosmos • http://www.youtube.com/FFreeThinker --- BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: http://www.youtube.com/watch?v=irVof7adq4s --- Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. http://www.carlsagan.com .
Ancient
Astronomy
Best
Carl
Sagan
Sagans
Cosmos
Episode
Scientists
Science
Astronomer
Astrophysics
Universe
Education
Educational
SETI
Big
Bang
Space
Galaxies
Solar
System
Planets
Physics
Origin
Human
Evolution
Lecture
Videos
Series
Einstein
Theory
Relativity
Time
Dilation
Albert
Black
Holes
Dark
Matter
Energy
Milky
Way
Galaxy
Atoms
Quarks
Speed
Light
Gravity
Hawking
Channels:
The Astronomers
Added: 827 days ago by
deek
Runtime: 08:58 |
Views: 753 |
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Triumph Of Modern Science Over Medieval Superstition
Johannes Kepler And The Triumph Of Modern Science Over Medieval Superstition - Best Of Carl Sagan's Cosmos (Part 18). Subscribe to Science & Reason: • http://www.youtube.com/SagansCosmos • http://www.youtube.com/Best0fScience • http://www.youtube.com/FFreeThinker BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: coming soon Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. • http://www.carlsagan.com Johannes Kepler (1571-1630) was a German mathematician, astronomer and astrologer, and key figure in the 17th century scientific revolution. He is best known for his eponymous laws of planetary motion, codified by later astronomers based on his works "Astronomia nova", "Harmonices Mundi", and "Epitome of Copernican Astrononomy". They also provided one of the foundations for Isaac Newton's theory of universal gravitation. During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, an assistant to astronomer Tycho Brahe, the court mathematician to Emperor Rudolf II, a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. He also did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and helped to legitimize the telescopic discoveries of his contemporary Galileo Galilei. Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of mathematics within the liberal arts) and physics (a branch of natural philosophy). • http://en.wikipedia.org/wiki/Johannes_Kepler .
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Channels:
The Astronomers
Added: 827 days ago by
deek
Runtime: 10:59 |
Views: 522 |
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Stephen Hawking: Master of the Universe (Part 1 of 10)
"Stephen Hawking: Master of the Universe" (2008) Part 1: http://uk.youtube.com/watch?v=YxxbXgo7IVw Part 2: http://uk.youtube.com/watch?v=c8ShC9VBQCs Part 3: http://uk.youtube.com/watch?v=To1rQNk08jo Part 4: http://uk.youtube.com/watch?v=3gox8PpNOPY Part 5: http://uk.youtube.com/watch?v=U8kmY6yvG4o Part 6: http://uk.youtube.com/watch?v=puXIw_bEqmU Part 7: http://uk.youtube.com/watch?v=7zxBdm1bNGw Part 8: http://uk.youtube.com/watch?v=iejh5fgcvyc Part 9: http://uk.youtube.com/watch?v=hLSu3dCpYr8 Part 10: http://uk.youtube.com/watch?v=MT5vR5Xm5eA Runtime: 01:36:20 Stephen Hawking is the most famous scientist on the planet. In his post as Lucasian Professor of Mathematics at Cambridge University, he counts Sir Isaac Newton (1642--1727) amongst his predecessors. And he was born 300 years to the day after the avant-garde astronomer, Galileo Galilei (1564--1642). Following a devastating diagnosis of motor neurone disease in 1963, Hawking was given two years to live. Yet 44 years later, he still hopes to solve the big problem of physics, that of unifying quantum mechanics and Einstein's theory of relativity. Doing so will produce a set of laws that will explain everything in the universe, including how it all began - a breakthrough aptly dubbed the 'Theory of Everything'. Hawking felt that he was on the brink of this breakthrough a long time ago. When he published his surprising best-seller 'A Brief History of Time' in 1988, he expressed a certainty that the Theory of Everything was imminent. However, twenty years later, it still eludes Hawking and the scientific community. Frustratingly, Hawking's condition is worsening. His only way of communicating now is through one cheek muscle. Will he find the theory before it is too late? This two-episode documentary from the UK's Channel 4 is both a portrait of Hawking and an attempt to explain his work to non-scientific types. It conveys the basics of quantum mechanics and the theory of relativity in an easy-to-understand manner and does very well to acquaint viewers with Hawking's extraordinary life and character. A thoroughly enjoyable, inspiring and enlightening series!
stephen
hawking
physics
theory
everything
relativity
quantum
mechanics
cosmology
astronomy
astrophysics
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newton
Channels:
The Astronomers
Added: 827 days ago by
deek
Runtime: 09:55 |
Views: 339 |
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