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Παρασκευή 27 Φεβρουαρίου 2015

Large Telescopes And Why We Need Them - Professor Carolin Crawford

   

Large Telescopes And Why We Need Them - Professor Carolin Crawford



Δημοσιεύτηκε στις 6 Ιουν 2012
Beyond
the Solar System, all astronomers have to work with is the light that
falls to the Earth from distant cosmic objects. Newer, larger telescopes
are always needed to boost scientific progress, and the next generation
of facilities - whether the 42m diameter optical-infrared Extremely
Large Telescope, or the Square Kilometre Array of radio dishes - will
represent a huge advance. We shall look at the science driving the need
for such large telescopes, through history and to the present-day and
beyond. Many scientific and engineering challenges are involved in the
design and construction of the largest telescopes and their mirrors, and
technological developments will be essential to their success.

The transcript and downloadable versions of the lecture are available from the Gresham College website:
http://www.gresham.ac.uk/lectures-and...

Gresham
College has been giving free public lectures since 1597. This tradition
continues today with all of our five or so public lectures a week being
made available for free download from our website.
http://www.gresham.ac.uk
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Unsolved Mysteries of the Universe - Professor Ian Morison

  

Unsolved Mysteries of the Universe - Professor Ian Morison



Ανέβηκε στις 24 Αυγ 2011
There
are many things that we do not understand about our Universe. This
lecture will discuss some of the most perplexing of these and survey the
instruments that are now being built and planned to help us fathom its
mysteries.

The transcript and downloadable versions of the lecture are available from the Gresham College website:
http://www.gresham.ac.uk/lectures-and...

Gresham
College has been giving free public lectures since 1597. This tradition
continues today with all of our five or so public lectures a week being
made available for free download from our website.
http://www.gresham.ac.uk
ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 28/2/2015
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NASA Discover Five Planet Like Earth Ever - New Documentary 2015

   

NASA Discover Five Planet Like Earth Ever - New Documentary 2015





Δημοσιεύτηκε στις 13 Οκτ 2014
You Also Watch this Awesome documentary:-
(HD) Future Invention of Fully Loaded Drones Weapons - New Documentary
https://www.youtube.com/watch?v=GxZkI...
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 27/2/2015
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The Dark Side of Time

   

The Dark Side of Time





Δημοσιεύτηκε στις 10 Ιουλ 2013
Is space-time fragmented, segmented into quantized bits of information, or causal sets?

Or is space-time smooth and continuous, with curves, bends, and warps; just as Einstein had predicted?

Is
what we call space-time even part of objective reality or is it just a
mathematical construct that appeals to our perceptions?

The
answer could be all of the above depending on our frame of reference.
When we apply Temporal Mechanics to Physics, it appears that there are
underlying aspects to Relativity that subtly show up in Quantum
Mechanics as extra dimensions of time.

Obsolete points-of-view
regarding the nature of time and relative frames of reference may be at
the center of the mismatch between Quantum Mechanics and General
Relativity.

Most physics theories tend to have a unique premise
in common: one time dimension. In fact, there is a growing consensus
that time is just an illusion.

Yet, applying extra dimensions to
time can successfully modify modern physics without violating the
conservation laws long held to be true. Modern notions of quantum
gravity and curved space-time can successfully be replaced with an
infinitude of relative frames of reference, progressing and regressing
though infinite series of relations, which imply the existence of
multidimensional time.


existics101.com

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Technical Talks: Renewables | Solar Fuels from Light and Heat



Technical Talks: Renewables | Solar Fuels from Light and Heat





Δημοσιεύτηκε στις 23 Φεβ 2015
Materials
Science and Engineering professor William Chueh discusses his project,
which focuses on using both light and thermal energy to conduct
efficient conversions of sunlight into fuel.

Learn more:
https://gcep.stanford.edu/events/symp...

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Technical Talks: Energy Conversion Materials and Devices

   



Technical Talks: Energy Conversion Materials and Devices



Δημοσιεύτηκε στις 23 Φεβ 2015
Roger Howe discusses the field of Thermionics and energy conversion applications.

https://gcep.stanford.edu/
https://gcep.stanford.edu/events/symp...

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Technical Talks: Energy Conversion Materials and Devices | Grid Energy S...

    

Technical Talks: Energy Conversion Materials and Devices | Grid Energy S...

Δημοσιεύτηκε στις 23 Φεβ 2015
Roger
Braun describes his GCEP project on solid oxide flow batteries and grid
storage. He focuses on the specific system concepts that will enable
the technology to move forward.

https://gcep.stanford.edu/
https://gcep.stanford.edu/events/symp...

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Michio Kaku (2015) "The Computer Will Be Everywhere And Nowhere"

   

Michio Kaku (2015) "The Computer Will Be Everywhere And Nowhere"



Δημοσιεύτηκε στις 23 Φεβ 2015
Subscribe For Michio Kaku's Speeches, Interviews, and Debates!
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 27/2/2015
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Τετάρτη 25 Φεβρουαρίου 2015

The Story Behind Neil Armstrong, The First Man on the Moon - Full HD 108...

   

The Story Behind Neil Armstrong, The First Man on the Moon - Full HD 108...





Δημοσιεύτηκε στις 24 Δεκ 2014
The Story Behind Neil Armstrong, The First Man on the Moon - Full HD 1080p (2014 Documentary)
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Δευτέρα 23 Φεβρουαρίου 2015

Theory of DNA Science - MESSAGE FROM GOD

    

Theory of DNA Science - MESSAGE FROM GOD



Δημοσιεύτηκε στις 2 Ιουν 2014
Theory of DNA Science - The code from GOD
http://www.advexon.com
What is DNA?
DNA,
or deoxyribonucleic acid, is the hereditary material in humans and
almost all other organisms. Nearly every cell in a person's body has the
same DNA. Most DNA is located in the cell nucleus (where it is called
nuclear DNA), but a small amount of DNA can also be found in the
mitochondria (where it is called mitochondrial DNA or mtDNA).
The
information in DNA is stored as a code made up of four chemical bases:
adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA
consists of about 3 billion bases, and more than 99 percent of those
bases are the same in all people. The order, or sequence, of these bases
determines the information available for building and maintaining an
organism, similar to the way in which letters of the alphabet appear in a
certain order to form words and sentences.
DNA bases pair up with
each other, A with T and C with G, to form units called base pairs. Each
base is also attached to a sugar molecule and a phosphate molecule.
Together, a base, sugar, and phosphate are called a nucleotide.
Nucleotides are arranged in two long strands that form a spiral called a
double helix. The structure of the double helix is somewhat like a
ladder, with the base pairs forming the ladder's rungs and the sugar and
phosphate molecules forming the vertical sidepieces of the ladder.
An
important property of DNA is that it can replicate, or make copies of
itself. Each strand of DNA in the double helix can serve as a pattern
for duplicating the sequence of bases. This is critical when cells
divide because each new cell needs to have an exact copy of the DNA
present in the old cell.
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Κυριακή 22 Φεβρουαρίου 2015

The First Second After The Big Bang - Universe Documentary 2014

   

The First Second After The Big Bang - Universe Documentary 2014





Δημοσιεύτηκε στις 6 Σεπ 2014
The First Second After The Big Bang - Universe Documentary 2014
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Stephen Hawking History (Special Biography)

    

Stephen Hawking History (Special Biography)





Δημοσιεύτηκε στις 4 Δεκ 2014
Stephen Hawking History (Special Biography)
Stephen Hawking Biography documentary
Secret Life Biography
History documentary
Biography
You Don't Know About
Documentary Biography HD History Documentary
Special Biography documentary
Stephen Hawking Life
Stephen Hawking Secret Life
Stephen Hawking history
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Into The Universe With Stephen Hawking The Story of Everything

    

Into The Universe With Stephen Hawking   The Story of Everything





Δημοσιεύτηκε στις 16 Ιουλ 2014
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Electronics 213 - RLC Series

   

Electronics 213 - RLC Series



Ανέβηκε στις 2 Μαΐ 2009
Prof. B Allen
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Cafe Scientifique: Skin Cancer: Best Practices for Its Prevention & Trea...

   

Cafe Scientifique: Skin Cancer: Best Practices for Its Prevention & Trea...





Δημοσιεύτηκε στις 17 Φεβ 2015
Susan
M. Swetter, MD, Professor of Dermatology Director, Pigmented Lesion
& Melanoma Program Stanford University Medical Center & Cancer
Institute

Learn about the harmful effects of sun exposure and artificial
ultraviolet radiation. Dr. Swetter will share the best protective
practices that work to prevent sunburn, photoaging, and skin
cancer, including the most deadly type - melanoma. The latest
FDA regulations regarding sunscreens will be discussed, focusing
on what patients and practitioners alike need to know.

http://bloodcenter.stanford.edu/news/...

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Michio Kaku (2015) "Are Scientists Crazy? YES!"

    



Michio Kaku (2015) "Are Scientists Crazy? YES!"



Δημοσιεύτηκε στις 4 Φεβ 2015
Subscribe For Michio Kaku Videos!
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Nanotechnology Will Blow Your Mind | New Documentary 2014 |

   

Nanotechnology Will Blow Your Mind | New Documentary 2014 |





ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 22/2/2015
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Σάββατο 21 Φεβρουαρίου 2015

Quantum Biology Q&A

   

Quantum Biology Q&A







ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 22/2/2015
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Quantum Biology: An Introduction

   

Quantum Biology: An Introduction





Δημοσιεύτηκε στις 18 Φεβ 2015
What
is quantum biology? Philip Ball explains how strange quantum effects
take place in the messy world of biology, and how these are behind
familiar biological phenomena such as smell, enzymes and bird's
migration.
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

In
this guest curated event on quantum biology, Jim Al-Khalili invited
Philip Ball to introduce how the mysteries of quantum theory might
manifest themselves at the biological level. Here he explains how the
baffling yet powerful theory of the baffling yet powerful theory of the
subatomic world might play an important role in biological processes.

Philip
Ball is a science writer, writing regularly for Nature and having
contributed to publications ranging from New Scientist to the New York
Times. He is the author of many popular books on science, including
works on the nature of water, pattern formation in the natural world,
colour in art, and the cognition of music, and he has also broadcast on
many occasions on radio and TV.

Jim Al-Khalili is Professor of
Theoretical Physics and Professor of Public Engagement in Science at
University of Surrey. He is author of several popular science books and
appears regularly on radio and television. In 2007, he was awarded the
Royal Society Michael Faraday Prize for Science Communication.

This event took place at the Royal Institution on 28 January 2015.

Subscribe for regular science videos: http://bit.ly/RiSubscRibe

Philip
Ball is a science writer, writing regularly for Nature and having
contributed to publications ranging from New Scientist to the New York
Times.

He is the author of many popular books on science,
including works on the nature of water, pattern formation in the natural
world, colour in art, and the cognition of music.

He has also broadcast on many occasions on radio and TV.

Watch more science videos on the Ri Channel http://richannel.org
The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Subscribe for the latest science videos: http://richannel.org/newsletter
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Τετάρτη 18 Φεβρουαρίου 2015

String Theory Lawrence Krauss and Brian Greene

  



String Theory   Lawrence Krauss and Brian Greene



Δημοσιεύτηκε στις 17 Δεκ 2014
String Theory Lawrence Krauss and Brian Greene
quantum,
quantum physics, quantum physic, quantum mechanic, quantum mechanics,
quantum break, quantum break game play, quantum leap, quantum theory,
quantum computer, quantum entanglement, physics, physic lecture, physic
documentary, physic debate, material, atom, fission, fissionable,
energy, string theory, quantum consciousness, quantum mind, structure of
atoms, quantum tunneling, up quark, Fred Alan Wolf, Higgs,
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The Big Bang Lawrence Krauss and Michio Kaku

    

The Big Bang   Lawrence Krauss and Michio Kaku





Δημοσιεύτηκε στις 21 Δεκ 2014
The Big Bang Lawrence Krauss and Michio Kaku
quantum,
quantum physics, quantum physic, quantum mechanic, quantum mechanics,
quantum break, quantum break game play, quantum leap, quantum theory,
quantum computer, quantum entanglement, physics, physic lecture, physic
documentary, physic debate, material, atom, fission, fissionable,
energy, string theory, quantum consciousness, quantum mind, structure of
atoms, quantum tunneling, up quark, Fred Alan Wolf, Higgs,
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Origin of the Universe Stephen Hawking

    

Origin of the Universe   Stephen Hawking



Δημοσιεύτηκε στις 7 Σεπ 2014
Origin of the Universe Stephen Hawking
quantum,
quantum physics, quantum physic, quantum mechanic, quantum mechanics,
quantum break, quantum break game play, quantum leap, quantum theory,
quantum computer, quantum entanglement, physics, physic lecture, physic
documentary, physic debate, material, atom, fission, fissionable,
energy, string theory, quantum consciousness, quantum mind, structure of
atoms, quantum tunneling, up quark, Fred Alan Wolf, Higgs,
JOIN QUIZGROUP PARTNER PROGRAM: http://join.quizgroup.com/?ref=64592
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Κυριακή 15 Φεβρουαρίου 2015

Frank Wilzcek: Understanding the Universe

   



Frank Wilzcek: Understanding the Universe



Δημοσιεύτηκε στις 5 Μαΐ 2014
The
2004 Nobel Prize in Physics winner, Frank Wilczek, explains the
universe, synthesis the Grand Unification of Forces, and shares his
vision of a new Golden Age in physics-- all for the layperson, in an
event celebrating the publication of his new book, The Lightness of
Being: Mass, Ether and the Unification of Forces. This event was held at
the New York Academy of Sciences.

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Σάββατο 14 Φεβρουαρίου 2015

12. LCR Circuits—DC Voltage

   

12. LCR Circuits—DC Voltage





Ανέβηκε στις 23 Μαρ 2011
For
more information about Professor Shankar's book based on the lectures
from this course, Fundamentals of Physics: Mechanics, Relativity, and
Thermodynamics, visit http://bit.ly/1jFIqNu.

Fundamentals of Physics, II (PHYS 201)

Like
capacitors, inductors act as energy storage devices in circuits. The
relationship between voltage, inductance and current in a variety of
circuits with DC voltages is described.

00:00 - Chapter 1. Review of Inductors
04:46 - Chapter 2. Inductive Circuits
54:18 - Chapter 3. LCR Circuits driven by an Alternating Source

Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses

This course was recorded in Spring 2010.

For
more information about Professor Shankar's book based on the lectures
from this course, Fundamentals of Physics: Mechanics, Relativity, and
Thermodynamics, visit http://bit.ly/1jFIqNu.

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15. Gene Regulatory Networks

  

15. Gene Regulatory Networks



Δημοσιεύτηκε στις 20 Ιαν 2015
MIT 7.91J Foundations of Computational and Systems Biology, Spring 2014
View the complete course: http://ocw.mit.edu/7-91JS14
Instructor: Ernest Fraenkel

This
lecture by Prof. Ernest Fraenkel is about gene regulatory networks. He
begins by finishing Lecture 14's discussion of protein-protein
interactions.

License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

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18. Analysis of Chromatin Structure

    

. Analysis of Chromatin Structure



Δημοσιεύτηκε στις 20 Ιαν 2015
MIT 7.91J Foundations of Computational and Systems Biology, Spring 2014
View the complete course: http://ocw.mit.edu/7-91JS14
Instructor: David Gifford

This
lecture begins with the epigenetic state, which regulates gene function
without changing DNA. Then, how to estimate the protein occupancy of
the genome via computational methods. Lastly, how to map enhancers to
their regulatory targets.

License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu
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The Unification of Physics: The Quest for a Theory of Everything

  

The Unification of Physics: The Quest for a Theory of Everything





Δημοσιεύτηκε στις 15 Δεκ 2014
The
holy grail of physics has been to merge each of its fundamental
branches into a unified “theory of everything” that would explain the
functioning and existence of the universe. The last step toward this
goal is to reconcile general relativity with the principles of quantum
mechanics, a quest that has thus far eluded physicists. Will physics
ever be able to develop an all-encompassing theory, or should we simply
acknowledge that science will always have inherent limitations as to
what can be known? Should new theories be validated solely on the basis
of calculations that can never be empirically tested? Can we ever truly
grasp the implications of modern physics when the basic laws of nature
do not always operate according to our standard paradigms?

Featuring physicists Katherine Freese, Marcelo Gleiser, and Max Tegmark. Hosted by Steve Paulson.

December 10, 2014
The New York Academy of Sciences
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Killer Asteroids: Doomsday or Payday? - Full Documentary

   

Killer Asteroids: Doomsday or Payday? - Full Documentary





Δημοσιεύτηκε στις 5 Φεβ 2015
Killer Asteroids: Doomsday or Payday? - Full Documentary
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Cosmology in the 21st Century: PI Public Lecture by Dr. Kendrick Smith

   

Cosmology in the 21st Century: PI Public Lecture by Dr. Kendrick Smith



Δημοσιεύτηκε στις 6 Φεβ 2015
Cosmologist
Kendrick Smith gives a guided tour through the expanding universe, from
the big bang to our present-day understanding of dark matter and other
cosmic phenomena, during his Feb. 4, 2015 public lecture at Perimeter
Institute.

Hit the subscribe button to see more PI lectures, interviews, animations, and more.

Find out about upcoming Perimeter Institute Public Lectures: http://www.perimeterinstitute.ca/outr...

Join the conversation:
www.twitter.com/perimeter
www.facebook.com/pi_outreach
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Explore The Milky Way Galaxy - Documentary HD

    

Explore The Milky Way Galaxy - Documentary HD





Δημοσιεύτηκε στις 24 Νοε 2014

* Subscribe for more Scientific & Technological Videos
* Like & Share
* go to our website http://www.advexon.com
* Share your ideas and comment
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Παρασκευή 13 Φεβρουαρίου 2015

The Early Universe - Professor Carolin Crawford

    

The Early Universe - Professor Carolin Crawford



Δημοσιεύτηκε στις 11 Φεβ 2015
When did the first stars form? And how did they assemble to form the earliest galaxies? http://www.gresham.ac.uk/lectures-and...

We
shall look at what happened during the ‘dark ages’ that span the period
between the Big Bang and the first galaxies, and see how the very early
Universe came to resemble the one we see around us now.

The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and...

Gresham
College has been giving free public lectures since 1597. This tradition
continues today with all of our five or so public lectures a week being
made available for free download from our website. There are currently
over 1,700 lectures free to access or download from the website.
Website: http://www.gresham.ac.uk
Twitter: http://twitter.com/GreshamCollege
Facebook: https://www.facebook.com/greshamcollege
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Science Documentary: Nanotechnology,Quantum Computers, Cyborg Anthropolo...

   

Science Documentary: Nanotechnology,Quantum Computers, Cyborg Anthropolo...





Δημοσιεύτηκε στις 27 Οκτ 2014
Science Documentary: Nanotechnology,Quantum Computers, Cyborg Anthropology a future tech documentary

All
things we see are made up of atoms. The study of, and the ability to
control, those atoms and molecules is through the field of nanoscience
and nanotechnology. The scale of things on the nano scale are smaller
than the width of a human hair.

Nanotechnology has been used in various fields such as computer science and engineering, physics, chemistry and biology.

Flexible electronics and wearable electronics are among the many growing fields that owe their existence to nanotechnology.
Graphene
is a nano material that is a conductive sheet of very thin, but very
strong carbon. It is transparent, but is also very lightweight.
Graphene is one of the most promising nano materials available to
scientists today.

The second portion of this video covers Quantum
Computing. A quantum computer is an extremely fast computer. The
processing power of a quantum computer is far greater than that of
classical computers. Computers read information that are coded in bits,
which are represented by 0's and 1's. A classical computer can process
only one bit at a time, either a 0 or a 1. A Quantum computer, has
quantum bits, or qbits, and a qbit can be a 0 and 1 at the same time.

The
next portion of the video covers cyborg anthropology and the
evaporation of the interface. If you use a cell phone or manipulate a
computer or tablet, you would be considered a low tech cyborg.

A
cyborg is an organism that has had certain outside components added to
it in order for that organism to be able to fit in to its environment.

The
next step in the evolution of humans as cyborgs would be the
evaporation of the interface. Soon it will be possible to do away with
our need to interface with technology, because the technology will be
able to sense our needs and react accordingly, without the need to push a
button, or manipulate the device in any way.

Similarly to the
way that primitive tools enhanced humans ability to hunt, and an
automobile enhanced our ability to move and travel faster without
wasting our energy, the microprocessor is enhancing human cognitive
capacity.

Science Documentary: Cognitive Science
http://youtu.be/0T_nOzpBYxU

Science Documentary: Planet Formation
http://youtu.be/yQexV341t-E

Science Documentary: Expansion of the Universe
http://youtu.be/nxsOVYmwSOk

Science Documentary: Star Formation
http://youtu.be/VJ9fmAGShvs

Science Documentary: Cosmic Microwave Background
http://youtu.be/fSPQbrxD75w

Science Documentary: Electromagnetic Spectrum
http://youtu.be/41Q6FeO-_8I

Google+
https://plus.google.com/u/0/b/1023842...
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Quantum Gravity and Superconductivity, electrical potential is linked to...

   

Quantum Gravity and Superconductivity, electrical potential is linked to...



Δημοσιεύτηκε στις 18 Ιουλ 2013
Because
superconductivity is formed by the dynamics of quantum mechanics we
need a deeper understanding of quantum physics to explain this.
Too
explain why the complete collapse of magnetic field lines causes such
spectacular effect causing the annihilation of gravity in the reference
frame of the experiment.
One explanation is that gravity is a
secondary force to the EM force. Because the light photon of quantum
mechanics is the carrier of the EM force this could link gravity and
quantum physics giving us what we could call quantum gravity!
But
these theories describe some of the effects of superconductivity without
giving us an objective explanation of these effects that exists within
the conventional Understanding of superconductivity.
Superconductivity does not just create Levitation defying the gravitational pull of the whole Earth.
There are forces of attraction called magnetic pinning locking the two objects together.
As the temperature approaches absolute zero the entropy reaches its minimum value.
It is as though they are frozen in time within their own reference frame.
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Tech Talk: John Martinis, "Design of a Superconducting Quantum Computer"

   

Tech Talk:  John Martinis,  "Design of a Superconducting Quantum Computer"





Δημοσιεύτηκε στις 28 Φεβ 2014
John
Martinis visited Google LA to give a tech talk: "Design of a
Superconducting Quantum Computer." This talk took place on October 15,
2013.

Bio:

John M. Martinis attended the University of
California at Berkeley from 1976 to 1987, where he received two degrees
in Physics: B.S. (1980) and Ph.D. (1987). His thesis research focused on
macroscopic quantum tunneling in Josephson Junctions. After completing a
post-doctoral position at the Commisiariat Energie Atomic in Saclay,
France, he joined the Electromagnetic Technology division at NIST in
Boulder. At NIST he was involved in understanding the basic physics of
the Coulomb Blockade, and worked to use this phenomenon to make a new
fundamental electrical standard based on counting electrons. While at
NIST he also invented microcalorimeters based on superconducting sensors
for x-ray microanalysis and astrophysics. In June of 2004 he moved to
the University of California, Santa Barbara where he currently holds the
Worster Chair. At UCSB, he has continued work on quantum computation.
Along with Andrew Cleland, he was awarded in 2010 the AAAS science
breakthrough of the year for work showing quantum behavior of a
mechanical oscillator.

Abstract:

Superconducting quantum
computing is now at an important crossroad, where "proof of concept"
experiments involving small numbers of qubits can be transitioned to
more challenging and systematic approaches that could actually lead to
building a quantum computer. Our optimism is based on two recent
developments: a new hardware architecture for error detection based on
"surface codes" [1], and recent improvements in the coherence of
superconducting qubits [2]. I will explain how the surface code is a
major advance for quantum computing, as it allows one to use qubits with
realistic fidelities, and has a connection architecture that is
compatible with integrated circuit technology. Additionally, the surface
code allows quantum error detection to be understood using simple
principles. I will also discuss how the hardware characteristics of
superconducting qubits map into this architecture, and review recent
results that suggest gate errors can be reduced to below that needed for
the error detection threshold.

References

[1] Austin G. Fowler, Matteo Mariantoni, John M. Martinis and Andrew N. Cleland, PRA 86, 032324 (2012).
[2]
R. Barends, J. Kelly, A. Megrant, D. Sank, E. Jeffrey, Y. Chen, Y. Yin,
B. Chiaro, J. Mutus, C. Neill, P. O'Malley, P. Roushan, J. Wenner, T.
C. White, A. N. Cleland and John M. Martinis, arXiv:1304:2322.
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2013 Nanodays- Carbon Nanotube speakers and Invisibility Cloaking- Carte...

 

2013 Nanodays- Carbon Nanotube speakers and Invisibility Cloaking- Carte...



Δημοσιεύτηκε στις 15 Απρ 2013
Presented by Carter Haines, Ph.D candidate Material Science ( Alan G. MacDiarmid Nanotech Institute, UT Dallas.)
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UTD NanoTech- Super-Strong Carbon Nanotube Yarn

      

UTD NanoTech- Super-Strong Carbon Nanotube Yarn



Δημοσιεύτηκε στις 15 Νοε 2012
Dr.
Ray Baughman of UT Dallas' NanoTech Institute explains the operation of
a new type of super-strong carbon nanotube yarn, which could one day
help power robots, make intelligent textiles and more.
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Πέμπτη 12 Φεβρουαρίου 2015

BCS Theory, BCS Theory of Superconductivity ......

   



BCS Theory, BCS Theory of Superconductivity ......



Δημοσιεύτηκε στις 2 Ιουν 2013
BCS THEORY -- BCS THEORY OF SUPERCONDUCTIVITY

BCS
Theory is based on interaction of two electrons through the interaction
of two electrons through the intermediary of photons. When an electron
approaches an ion in the lattice, there is a coulomb attraction between
the electron and the lattice ion. This produces a lattice distortion
which causes increases in the density of ions in the region of
distortion. The higher density of ions in the distorted region attracts
another electron. Thus a free electron extorts attractive force on
another electron through phonons which are quanta of lattice vibration.

  • Κατηγορία


  • Άδεια

    • Τυπική άδεια YouTube
    ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 12/2/2015


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Einstein, Nanoscience, & Superconductivity

   



Einstein, Nanoscience, & Superconductivity



Ανέβηκε στις 12 Φεβ 2008
Marvin Cohen, University Professor, UC Berkeley
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What is Conductivity & Superconductivity as Fast as Possible

   

What is Conductivity & Superconductivity as Fast as Possible





Δημοσιεύτηκε στις 7 Απρ 2014
What actually causes the heat in your PC. How could we have a smaller, faster computer? Superconductivity!

Credits:

Hosting & Scripting: https://twitter.com/TaranVH

Footage:
http://en.wikipedia.org/wiki/File:Mei...
http://en.wikipedia.org/wiki/File:Fly...

Images:
http://www.ptable.com/#Property/Condu...
http://commons.wikimedia.org/wiki/Fil...
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Subir Sachdev Public Lecture: Quantum Entanglement & Superconductivity

   

Subir Sachdev Public Lecture: Quantum Entanglement & Superconductivity





Δημοσιεύτηκε στις 2 Οκτ 2014
Dr.
Subir Sachdev (Perimeter Institute and Harvard University) delivers the
kick-off lecture of the 2014/15 Perimeter Institute Public Lecture
Series, in Waterloo, Ontario, Canada. Held at Perimeter Institute and
webcast live worldwide on Oct. 1, 2014, Sachdev's lecture explores the
fascinating and surprising connections between quantum mechanics, the
phenomenon of superconductivity, and string theory.

Perimeter Institute Public Lectures are held in the first week of each month. More information on Perimeter Public Lectures: http://ow.ly/Cdd8y

Join the conversation:
@Perimeter
#piLIVE
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Superconductivity and The Meissner Effect Explained

   

Superconductivity and The Meissner Effect Explained



Δημοσιεύτηκε στις 11 Ιαν 2015
There
are many superconductivity demos featuring levitation. Unfortunately,
most are either not explained or wrongly explained as lenz's law. This
video gives a 5 minute explanation of the Meissner Effect and
Superconductivity, giving a summary of BCS theory. Hopefully, by
watching this, you will understand the difference between
superconductors and normal metals.
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Room Temperature Superconductors 2015

  

Room Temperature Superconductors 2015



Δημοσιεύτηκε στις 31 Μαρ 2014
An
overview of recent developments in cryo- and room temperature
superconducting materials. The causes of electrical resistance and how
they may be minimized.

  • Κατηγορία


  • Άδεια

    • Τυπική άδεια YouTube
    ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 12/2/2015


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Τετάρτη 11 Φεβρουαρίου 2015

André Marie Tremblay - High temperature superconductors: Where is the my...

   

André Marie Tremblay - High temperature superconductors: Where is the my...



Δημοσιεύτηκε στις 14 Φεβ 2014
PROGRAM: STRONGLY CORRELATED SYSTEMS: FROM MODELS TO MATERIALS

DATES: Monday 06 Jan, 2014 - Friday 17 Jan, 2014

VENUE: Department of Physics, IISc Campus, Bangalore

PROGRAM LINK : http://www.icts.res.in/program/MTM2014

The
realistic description of materials with strong electron-electron
interactions is one of the challenges of modern condensed matter
physics. Such a realistic description on one hand requires
non-perturbative many body approaches, and on the other hand requires
model Hamiltonian with material specific details offered by density
functional theory (DFT). Mastering these novel techniques requires a
wide background, ranging from DFT to model building and non-perturbative
many body approaches such as Quantum Monte Carlo. During the last few
years a major breakthrough came with the development of the
DFT+Dynamical Mean Field Theory (DFT+DMFT) method. In this approach,
conventional ab-initio schemes based on DFT are combined with a modern
many-body approach, the dynamical mean-field theory (DMFT). In the DMFT
method the full many body problem of solid state physics is mapped onto a
quantum impurity model related by a self-consistency condition and the
resulting impurity model is solved using non-perturbative many body
techniques.

The present program has this circle of ideas as its
focus. It is built around three Chandrasekhar lectures to be delivered
by Prof A. Georges. In addition to these lectures there will be a
school, divided into two parts, and a discussion meeting, scheduled
between the two parts of the school, in which recent theoretical and
experimental results on strongly correlated materials will be discussed
by leading experts from India and abroad.

The school will be devoted to the following topics.

School Part I : Jan 6 -- Jan 9, 2014

a) Basic Density Functional Theory (DFT) and basis sets

b) Wannier functions




c) An introduction to many-body methods and Quantum Monte Carlo

d) Constrained LDA/RPA and Estimation of U and J

School Part II : Jan 14 -- Jan 17, 2014

a) Dynamical Mean Field Theory (DMFT)

b) Impurity Solvers

c) GW+DMFT

d) DFT+DMFT

The
program is designed to educate advanced graduate students and young
post-doctoral fellows in this emerging field of strongly correlated
systems and to train them to carry out numerical calculations.
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Laura Greene - High-Temperature Super-Conductivity: Taming Serendipity (...

   

Laura Greene - High-Temperature Super-Conductivity: Taming Serendipity (...



Δημοσιεύτηκε στις 15 Νοε 2012

  • Κατηγορία


  • Άδεια

    • Τυπική άδεια YouTube
    ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 11/2/2015


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