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00:01:00

Quantum Spin Hall effect in graphene

by José Luis Lado
Quantum Spin Hall effect in graphene
for All ages,
Arts presentations | All ages | 5 years ago | 3743 views
Rating:

The quantum spin Hall effect is a topological state of matter characterized by sustaining gapless chiral edge states together with an insulating bulk. This phase can be triggered out by applying strong magnetic fields in a graphene sample

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00:01:00

Graphene

by José Luis Lado
Graphene
for 14-19 and upwards,
Arts presentations | 14-19 and upwards | 5 years ago | 3656 views
Rating:

A magnetic tunnel junction is a device with two magnets separated by a very thin non-magnetic barrier. The two magnets can be aligned parallel or antiparallel. The electrical resistance of this devices depends on the alignment. This video illustrates....

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00:09:00

The dynamics of a spinning chair

by Rufus Marsh
The dynamics of a spinning chair
for 14-19 and upwards,
Discussions | 14-19 and upwards | 5 years ago | 888 views
Rating:

Jonathan talks to a real exoert about the science of balance.

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00:31:00

The Adventure of Cold Atoms. From Optical Pumping to Quantum Gases

by Claude Cohen-Tannoudji
The Adventure of Cold Atoms. From Optical Pumping to Quantum Gases
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 797 views
Rating:

Conservation laws are very important in quantum physics. Two examples of applications will be given. First, optical pumping which uses transfer of angular momentum from polarized photons to atoms to produce highly polarized atomic gases. Then, laser ....

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00:29:00

A New Kilogram in 2018: The Biggest Revolution in Metrology Since the French Revolution

by Klaus vonKlitzing
A New Kilogram in 2018: The Biggest Revolution in Metrology Since the French Revolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 995 views
Rating:

Metrology - the science of measurements - is responsible for the international uniformity and precision in standards. Today, the seven units for meter, kilogram, second, ampere, kelvin, mole, and candela of our international system of units (SI units....

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00:33:00

What About Redefining Time Using a Stable Laser?

by John Hall
What About Redefining Time Using a Stable Laser?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 830 views
Rating:

Several laser-based Atomic Clocks now have an accuracy potential of ~2 x10-18, a hundred-fold better than the best achieved after more than 60 years' experience with rf resonances in Cs atoms. Still, this long attention span documents that the Cs Fou....

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00:44:00

The Future of Particle Physics

by David Gross
The Future of Particle Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1049 views
Rating:

Elementary Particle Physics seeks to discover the basic constituents of matter and understand the fundamental forces that act on them. In this lecture I shall review the current state of particle physics, the grand success of the ñstandard modelî, ....

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00:37:00

Discovery of the Higgs Particle

by Martinus Veltman
Discovery of the Higgs Particle
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 898 views
Rating:

Recently the Higgs particle has been discovered at CERN. This particle was theoretically predicted. The historical development of field theory, leading to this prediction will be discussed.

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00:29:00

Future Accelerators for Astro-Particle Physics

by Carlo Rubbia
Future Accelerators for Astro-Particle Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 845 views
Rating:

One of the most remarkable results of astro-particle Physics has been the success of the Standard Model, recently culminated in the discovery of the Higgs particle (Ho). However, the Ho is observable only in few channels at the LHC, in the presence o....

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00:35:00

The International Year of Light: Celebrating Fifty Years of Laser Revolution in Physics

by Serge Haroche
The International Year of Light: Celebrating Fifty Years of Laser Revolution in Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 826 views
Rating:

The year 2015 has been named the International Year of Light, to mark milestones in the science of light which occurred 1000, 200, 150, 100 and 50 years go. I was a young student in physics in 1965, when the cosmic radiation background was discovered....

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00:39:00

Light Quanta and Their Idiosyncrasies

by Roy Glauber
Light Quanta and Their Idiosyncrasies
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1012 views
Rating:

Maxwell's electromagnetic theory (now 150 years old) seemed in its comprehensive way to be capable of answering all of the questions one might ever pose about the theory of light. But that spell was broken in 1900 by Planck's discovery that light bea....

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00:31:00

Quantum Information: a Scientific and Technological Revolution for the 21st Century

by William Phillips
Quantum Information: a Scientific and Technological Revolution for the 21st Century
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 783 views
Rating:

Two of the great scientific and technical revolutions of the 20th century were the discovery of the quantum nature of the submicroscopic world, and the advent of information science and engineering. Both of these have had a profound effect not only o....

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00:35:00

Science with Combs of Light

by Theodor Hänsch
Science with Combs of Light
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1011 views
Rating:

The spectrum of a frequency comb, commonly generated by a mode-locked femtosecond laser, consists of several hundred thousand precisely evenly spaced spectral lines. Such laser frequency combs have revolutionized the art of measuring the frequency of....

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00:33:00

The Origin of Elementary Particle Masses

by Francois Englert
The Origin of Elementary Particle Masses
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 754 views
Rating:

In the beginning of the 60s, the laws of classical general relativity, Einstein's generalisation of Newtonian gravity, and of quantum electrodynamics, the quantum version of Maxwell's electromagnetic theory, were known. These laws describe long range....

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00:11:00

askFSU 1 : speed of light, tachyons, solar sails, and black holes

by Jeff Owens
askFSU 1 : speed of light, tachyons, solar sails, and black holes
for 14-19 and upwards,
Interviews | 14-19 and upwards | 5 years ago | 0 views
Rating:

Joining Philip Schlenoff is Dr. Jeff Owens, from the Physics department at Florida State University, to answer some physics and astrophysics-related questions!

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00:28:00

Optical Microscopy – the Resolution Revolution

by Stefan Hell
Optical Microscopy – the Resolution Revolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 760 views
Rating:

Throughout the 20th century it was widely accepted that a light microscope relying on conventional optical lenses cannot discern details that are much finer than about half the wavelength of light (200-400 nm), due to diffraction. However, in the 199....

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00:05:00

Solar Energy

by Various Presenters
Solar Energy
for 11-14 and upwards,
Highschool presentations | 11-14 and upwards | 5 years ago | 988 views
Rating:

Sophie and Stephanie take a light-hearted look at solar energy.

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01:03:00

The Long Road to the Higgs Boson – and Beyond

by John Ellis
The Long Road to the Higgs Boson – and Beyond
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 0 views
Rating:

The discovery of the Higgs boson at CERN’s LHC accelerator in 2012 by the ATLAS and CMS collaborations was the culmination of a decades-long search that had started in 1964 with the proposal of this unique particle, a signature of the origin of the....

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00:48:00

Density Functional Theory: three non-technical explanations

by Stefaan Cottenier
Density Functional Theory: three non-technical explanations
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1120 views
Rating:

What do six brides have to do with Density-Functional Theory? Discover it in this lecture, in which the essential ideas behind DFT are explained in three different non-technical ways. After this practical lecture, you will be able to understand the m....

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00:10:00

Superconductivity

by Kit Hey
Superconductivity
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 6 years ago | 1279 views
Rating:

This video shows a terrific selection of superconducting demonstrations and explanations.

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00:29:00

hyperfine interactions

by Stefaan Cottenier
hyperfine interactions
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 2122 views
Rating:

30-minute lecture about the physics of hyperfine interactions, and about how to calculate hyperfine interactions by the WIEN2k DFT code

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01:04:00

Communicating with light

by Polina Bayvel
Communicating with light
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 876 views
Rating:

Most of the data we generate and receive (whether emails, tweets, videos or mobile calls) are now carried by optical fibres, which use light to transmit vast quantities of information over trans-oceanic distances. The use of hundreds of wavelengths ....

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00:06:00

Radiation in Your Kitchen: Basic Microwave Oven Physics

by Daniel Julio Domínguez
Radiation in Your Kitchen: Basic Microwave Oven Physics
for 11-14 and upwards,
Teaching modules | 11-14 and upwards | 6 years ago | 2248 views
Rating:

They're awesome to have in the kitchen, but did you ever wonder how your microwave actually works? This is a quick introduction to the theory that makes our home microwave ovens possible. Here, Daniel covers the differences between microwave heati....

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00:31:00

From Millisecond to Attosecond Laser Pulses

by Nicolaas Bloembergen
From Millisecond to Attosecond Laser Pulses
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1043 views
Rating:

A historical overview is presented of the experimental development of ever shorter laser pulses from 1960 to the present. Already in the early sixties nanosecond pulses were achieved and the entry into the picosecond domain was reached in the late s....

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00:25:00

Role of Cortical Noise in Vision

by Donald Glaser
Role of Cortical Noise in Vision
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 640 views
Rating:

Our brains are always generating electrical signals, even if we close our eyes, plug our ears, and lie in a warm bath. These signals are called cortical noise because they don't correlate with any sensation or thought of which we are aware. I will ....

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00:36:00

The Individuality of Light Quanta

by Roy Glauber
The Individuality of Light Quanta
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 938 views
Rating:

Light quanta are the fundamental units of radiant energy. When propagating freely they travel at the fastest attainable speed and live forever. These properties recommend them as the ideal messengers for communication of all sorts. Ordinary light ....

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00:27:00

Which Way For Physics?

by Brian Josephson
Which Way For Physics?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 708 views
Rating:

This talk describes a new approach to the problem of characterising physical reality, one with the potential to fill in gaps in the conventional understanding of nature. It is based on a different view from the usual one of structure at the finest l....

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00:32:00

What Future for Energy and Climate?

by Jack Steinberger
What Future for Energy and Climate?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 684 views
Rating:

We are using the planet's fossil fuel resources in a time which is very short compared to that of human evolution. In the same process we are changing the planet's climate and sea level, threatening the future of large segments of the global populat....

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00:30:00

The Development of Particle Physics

by Martinus Veltman
The Development of Particle Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 943 views
Rating:

Particle physics mainly developed after World War II. It has its roots in the first half of the previous century, when it became clear that all matter is made up from atoms, and the atoms in turn were found to contain a nucleus surrounded by electro....

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00:29:00

Discovery of Superconducting Tunneling

by Ivar Giaver
Discovery of Superconducting Tunneling
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1150 views
Rating:

I had the great fortune to receive a Nobel Prize in Physics for using electron tunneling to measure the energy gap in superconductors. In this talk I will recollect some of the events that led to this discovery and hopefully I will be able to convey....

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00:32:00

The Optical Frequency Comb – a Really Versatile Tool

by John Hall
The Optical Frequency Comb – a Really Versatile Tool
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 914 views
Rating:

The Optical Frequency Comb concept and technology exploded in 1999-2000 from the synthesis of advances in independent fields of Laser Stabilization, UltraFast Lasers, and NonLinear Optical Fibers. The Comb was developed first as a method for optical....

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00:29:00

Towards a Quantum Laboratory on a Chip

by Theodor Hänsch
Towards a Quantum Laboratory on a Chip
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 693 views
Rating:

Microfabricated magnetic traps, waveguides, and other elements for the manipulation of ultracold atoms can be combined to form a quantum laboratory on a chip. Devices such as miniaturized atom lasers, atom interferometers, and atomic clocks have been....

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00:33:00

Cold Atomic Gases: the Intersection of Condensed Matter and Atomic Physics

by William Phillips
Cold Atomic Gases: the Intersection of Condensed Matter and Atomic Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1042 views
Rating:

During the past decade laser cooling and evaporative cooling of atoms have produced quantum degenerate gases both of bosons (Bose-Einstein condensates) and of fermions (gases with temperatures below the Fermi temperature). Such gases can provide ana....

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00:34:00

From Spinwaves to Giant Magnetoresistance (GMR) and Beyond

by Peter GrŸnberg
From Spinwaves to Giant Magnetoresistance (GMR) and Beyond
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 876 views
Rating:

Standing spinwaves and surface waves in layered magnetic structures can be used for the detection and quantitative evaluation of interlayer exchange coupling (IEC). Using this method antiferromagnetic IEC has been found in Fe/Cr/Fe layered structure....

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00:37:00

Cosmic Rays: the Most Energetic Particles in the Universe

by James Cronin
Cosmic Rays: the Most Energetic Particles in the Universe
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 799 views
Rating:

Astrophysical objects are able to accelerate atomic nuclei to energies 10^7 times more than man made accelerators such as LHC. _Particles arrive at earth from space with energies as great as 50 joules, a macroscopic energy in a microscopic particle.....

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00:39:00

The World of Spintronics: Electrons, Spins, Computers and Telephones

by Albert Fert
The World of Spintronics: Electrons, Spins, Computers and Telephones
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 733 views
Rating:

Spintronics is a new field of research which exploits the influence of the electron spin on electronic transport. It is well known for the giant magnetoresistance of the magnetic multilayers and its application to increase the capacity of the hard d....

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00:32:00

The Big Challenges

by Gerardus t'Hooft
The Big Challenges
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 752 views
Rating:

During the entire 20th century, physical sciences have advanced to such a degree that we can extrapolate how they can be applied, even in a fairly distant future.  Even if we leave open the (likely) possibility of spectacular new discoveries and inv....

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00:34:00

Frontiers of Physics

by David Gross
Frontiers of Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1123 views
Rating:

David discusses a few of the questions facing fundamental physics that might be answered before the 100th Lindau meeting in 2050.

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00:32:00

The Looming World Shortage of Helium

by Robert Richardson
The Looming World Shortage of Helium
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 637 views
Rating:

The worldÍs supply of Helium gas comes primarily from alpha decay in rocks. The most abundant supply is in the American Southwest where it is trapped with methane is natural gas wells. That supply is estimated to last a mere 25 years. It took 4.7 bi....

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00:28:00

The History of the Universe, from the Beginning to the Ultimate End

by John Mather
The History of the Universe, from the Beginning to the Ultimate End
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 755 views
Rating:

John summarizes the history of the universe, from the Big Bang through the formation of galaxies and the Solar System, and the history of the Earth and some of the special factors enabling the formation of life.  Our future will be hot as the Sun ge....

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01:18:00

What is Quantum Optics?

by Roy Glauber
What is Quantum Optics?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 2900 views
Rating:

The image of light waves as oscillating electromagnetic fields explains virtually all the phenomena of traditional optics.  An awareness that these waves are somehow subdivided into quanta has however been with us since the early 20th century.  The....

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00:43:00

The Development of Particle Physics

by Martinus Veltman
The Development of Particle Physics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 812 views
Rating:

Particle physics mainly developed after World War II. It has its roots in the first half of the previous century, when it became clear that all matter is made up from atoms, and the atoms in turn were found to contain a nucleus surrounded by electro....

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01:04:00

Mapping the Universe and Its History

by George Smoot
Mapping the Universe and Its History
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1473 views
Rating:

Using our most advanced techniques and instruments we sift through study the cosmic microwave background as a relic of the early universe to understand the events surrounding the birth and subsequent development of the Universe.  A precision inspect....

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00:34:00

What Can We Do with Laser Frequency Combs?

by Theodor Hänsch
What Can We Do with Laser Frequency Combs?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 973 views
Rating:

The spectrum of a frequency comb, commonly generated by a mode-locked femtosecond laser consists of several hundred thousand precisely evenly spaced spectral lines.  Such laser frequency combs have revolutionized the art measuring the frequency of l....

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00:27:00

Model Synthesis for Ceramics: Superconductors, Magnets and Others

by Karl Muller
Model Synthesis for Ceramics: Superconductors, Magnets and Others
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 913 views
Rating:

The discovery of superconductivity in hole doped La2CuO4 was motivated by the interest to find this phenomenon in an oxide.  After the discovery near 35 K, copper oxides with transition temperatures of up to 131 K at normal pressure were found, i.e.....

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00:30:00

Superposition, Entanglement, and Raising Schrödinger’s Cat

by David Wineland
Superposition, Entanglement, and Raising Schrödinger’s Cat
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1438 views
Rating:

In 1935, Erwin Schrödinger, one of the inventors of quantum mechanics, illustrated his discomfort with the theory by pointing out that its extension to the macroscopic world could lead to bizarre situations such as a cat being simultaneously alive a....

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00:31:00

Controlling Photons in a Box and Exploring the Quantum to Classical Boundary

by Serge Haroche
Controlling Photons in a Box and Exploring the Quantum to Classical Boundary
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1255 views
Rating:

The founders of quantum theory assumed in 'thought experiments' that they were manipulating isolated quantum systems, obeying the counterintuitive laws which they had just discovered.  Technological advances have recently turned these virtual experi....

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00:30:00

Powering the Future

by Robert Laughlin
Powering the Future
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 959 views
Rating:

Some seeds of what to do in the climate/energy controversy are contained in what will be.  In this talk I shall ask everyone to jump over contemporary politics and make a mental journey to a time, several centuries from now, when nobody uses carbon-....

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