100 results found for physics

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00:01:00

Graphene

by José Luis Lado
Graphene
for 14-19 and upwards,
Arts presentations | 14-19 and upwards | 3 years ago | 2767 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 | 4 years ago | 687 views
Rating:

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

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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 | 4 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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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 | 4 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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00:10:00

Superconductivity

by Kit Hey
Superconductivity
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 4 years ago | 997 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 | 5 years ago | 1871 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 | 5 years ago | 643 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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00:08:00

Longboard data analysis

by Jonathan Hare
Longboard data analysis
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 1178 views
Rating:

Using a data-logger to analyse the performance of a longboard.

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00:04:00

Longboard physics

by Jonathan Hare
Longboard physics
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 6058 views
Rating:

A few (surprising?) thoughts on how the wheels on a longboard or skateboard actually move.

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00:07:00

The Longboard – speedometer

by Jonathan Hare
The Longboard – speedometer
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 1278 views
Rating:

Jonathan describes his adventures with a longboard and some different methods of making a speedometer for it.

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00:03:00

Resonance and Bridges

by Abigail Pearson
Resonance and Bridges
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 5 years ago | 2554 views
Rating:

Abbie describes why bridges must be designed to counteract the effects of unwanted vibrations.

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00:06:00

Concert Hall Acoustics

by Various Presenters
Concert Hall Acoustics
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 5 years ago | 1130 views
Rating:

Physics' students Rosie & Carine explain the physics behind concert hall acoustics.

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00:05:00

The Fresnel Lens

by Jonathan Hare
The Fresnel Lens
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 779 views
Rating:

Early lighthouses used coil and wood fires before moving on to gas and then electricity powered lights.  Massive improvements took place by using a lens system around the light.  The development of the Fresnel lens brought what we now regard as the....

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01:00:00

A Little Light Relief

by David Phillips
A Little Light Relief
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 1220 views
Rating:

Light, particularly sunlight, is believed to be good for our health. Many ancient civilisations even attributed it with mystical healing powers.Renowned for his entertaining lectures, Professor David Phillips, President of the RSC, uses his expertise....

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01:15:00

The Nuclear Debate

by Various Presenters
The Nuclear Debate
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 967 views
Rating:

New carbon targets requires reducing emissions of greenhouse gases by 50% for 2030. This house believes that it will be impossible to meet the emissions reductions required to fulfil these obligations without the use of nuclear power.  Taking the pr....

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00:04:00

Real Gases

by Morgan Jefferis
Real Gases
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 6 years ago | 2679 views
Rating:

A light-hearted look at the difference between real and ideal gases.

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00:06:00

High Precision Atomic Mass Measurements

by Brianna Mount
High Precision Atomic Mass Measurements
for 14-19 and upwards,
Postgraduate presentations | 14-19 and upwards | 6 years ago | 962 views
Rating:

The best in the world!

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00:51:00

Music, architecture and acoustics in Renaissance Venice: Recreating lost soundscapes

by Malcolm Longair
Music, architecture and acoustics in Renaissance Venice: Recreating lost soundscapes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 1032 views
Rating:

During the Renaissance in Venice, composers such as the Gabrieli and Moneverdi created some of their greatest masterpieces for performance in the great churches on festive occasions. But what would the music have sounded like, given its complexity an....

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00:58:00

The Centenary of the Discovery of Cosmic Rays: the End of the Beginning

by Arnold Wolfendale
The Centenary of the Discovery of Cosmic Rays: the End of the Beginning
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 822 views
Rating:

Sir Arnold Wolfendale FRS is Emeritus Professor of Physics at the University of Durham, and former Astronomer Royal. In 1912, Victor Hess embarked on a perilous balloon ascent and discovered the 'Cosmic Radiation', actually a beam of atomic particles....

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01:02:00

The search for a deeper understanding of our universe at the Large Hadron Collider

by Rolf-Dieter Heuer
The search for a deeper understanding of our universe at the Large Hadron Collider
for 14-19 and upwards,
Lectures | 14-19 and upwards | 6 years ago | 807 views
Rating:

With the start of the Large Hadron Collider (LHC) at CERN, particle physics entered a new era. The LHC will provide a deeper understanding of the universe and the insights gained could change our view of the world, and the lecture will present some o....

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00:12:00

The eye and colour vision

by Joe Wolfe
The eye and colour vision
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 1706 views
Rating:

The physics of the eye, its performance and colour vision: refraction and accommodation; photoreceptors and resolution; compromises in visual performance.

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00:11:00

Geometrical optics

by Joe Wolfe
Geometrical optics
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 981 views
Rating:

On scales much bigger than the wavelength, rays explain the behaviour of interfaces, mirrors, lenses, optical instruments, including telescopes and microscopes.

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00:12:00

The nature of light

by Joe Wolfe
The nature of light
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 870 views
Rating:

White light comprises colours in the visible spectrum. The electromagnetic spectrum. Speed of light. Young's experiment and waves. Quanta and photons.

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00:11:00

Human Sound

by Joe Wolfe
Human Sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1403 views
Rating:

Sound is produced in the larynx; filtering it in the vocal tract produces formants and phonemes. The acoustics, mechanics and some neurobiology of hearing. Pitch perception.

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00:09:00

Standing waves

by Joe Wolfe
Standing waves
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1291 views
Rating:

Reflecting waves gives standing waves, which can be resonances. Standing waves on strings and in pipes and plates.

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00:08:00

Interference and consonance

by Joe Wolfe
Interference and consonance
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1063 views
Rating:

Superposing waves with different frequencies gives beats and Tartini tones. Removing beats gives consonance. Tuning consonances gives temperament.

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00:09:00

Quantifying sound

by Joe Wolfe
Quantifying sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1137 views
Rating:

Frequency, amplitude, envelope and spectrum affect pitch, loudness and timbre. All are discussed and quantified here.

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00:17:00

How can we see atoms ?

by John Rodenburg
How can we see atoms ?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 781 views
Rating:

Seeing atoms using electons rather than lenses

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00:10:00

The Doppler effect

by Joe Wolfe
The Doppler effect
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1421 views
Rating:

Moving either source or receiver produces a frequency shift called the Doppler effect, which we measure and analyse.

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00:09:00

Sound

by Joe Wolfe
Sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 968 views
Rating:

Sound is a longitudinal wave of variations in pressure and density. We derive and measure its speed.

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00:06:00

Travelling waves II

by Joe Wolfe
Travelling waves II
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1007 views
Rating:

The wave equation and its physical origin. Power in a wave and its relation to intensity in radiation.

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00:12:00

Color Theory

by Sarah Ferguson
Color Theory
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 9 years ago | 905 views
Rating:

For my project I am giving a brief history of color theory with emphasis on how science and color theory have interacted. I focus on aspects like primary colors, how color is perceived, and the artists who were at the forefront of color and design. I....

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00:09:00

Magnetism and Electricity

by Jean Pruitt
Magnetism and Electricity
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 9 years ago | 824 views
Rating:

This presentation reviews how magnets work and their uses in the world today. It also explains how magnets and electricity are related and what future inventions could come from using magnets.

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00:07:00

Travelling waves I

by Joe Wolfe
Travelling waves I
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1074 views
Rating:

In an extended medium, inertia and a restoring force can lead to waves, which reflect at boundaries, either erect or inverted.

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00:09:00

Oscillations

by Joe Wolfe
Oscillations
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 783 views
Rating:

Inertia and restoring forces can, with low friction or damping, lead to oscillations and resonance. We analyse the mechanics of vibrations.

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00:12:00

Gravity

by Joe Wolfe
Gravity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 931 views
Rating:

The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.

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00:41:00

Particle Physics and the Mysteries of the Early Universe

by Cristina Lazzeron
Particle Physics and the Mysteries of the Early Universe
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 828 views
Rating:

Dr Cristina Lazzeroni, a Royal Society University Research Fellow from the University of Birmingham, reveals the secrets of the world's largest accelerator, the Large Hadron Collider and how the LHC experiments hope to answer big questions about the ....

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01:10:00

The LHC: largest experiment and smallest particles

by Tara Shears
The LHC: largest experiment and smallest particles
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 875 views
Rating:

The LHC is the most powerful particle accelerator ever built. It is capable of recreating the very energetic conditions last seen in the universe a billionth of a second after the Big Bang, and allows particle physicists to study the fundamental ingr....

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00:10:00

Rotation

by Joe Wolfe
Rotation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 808 views
Rating:

Torques produce angular acceleration, moment of inertia 'resists' it. Rotational kinetic energy and angular momentum.

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00:09:00

Sticky tape X-rays

by Carlos Camara
Sticky tape X-rays
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 794 views
Rating:

Peeling sticky tape emits energy that extends into the X-ray regime, reports a study in Nature. The research provides evidence for a phenomenon that was first observed more than 50 years ago.nnIt is well known that unwinding sticky tape produces spar....

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.....

Dark Matter, Dark Energy

by George Smoot
Dark Matter, Dark Energy
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1091 views
Rating:

Smoot's Nobel Prize was awarded for his analysis of that whisper from the Big Bang, the cosmic microwave background radiation. Today he hopes CERN's data will again transform our understanding of the universe. Young scientists Bilge Demirkoz and Benj....

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00:06:00

The Quantum Lattice

by William Phillips
The Quantum Lattice
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 895 views
Rating:

Awarded a Nobel Prize for using lasers to control and cool atoms, producing the Bose-Einstein condensation, Bill Phillips is eager to hear about new theories from young scientists like Hannah Venzl. An exciting dialogue develops between them on a boa....

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00:06:00

Fibre and Sunlight

by John Hall
Fibre and Sunlight
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 889 views
Rating:

Fine tuning the frequencies of light gave John Hall a Nobel Prize, and helped transform the fields of precision measurement and information transmission. Iris Choi and Andrei Ghicov are young scientists excited by the ways physics can change our worl....

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00:06:00

Abolishing Time?

by David Gross
Abolishing Time?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1217 views
Rating:

David Gross's Nobel Prize was for work on the 'strong' force which acts between quarks inside the atom. Now he works on string theory, hoping to understand how all the forces of nature could be united. He believes the next steps may involve throwing ....

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00:10:00

Momentum

by Joe Wolfe
Momentum
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 827 views
Rating:

p=mv. If external forces are zero, momentum is conserved. In collisions, energy may be conserved (elastic) or not (inelastic).

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00:12:00

The Nature and Physics of Lightning

by Emily Dougherty
The Nature and Physics of Lightning
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 10 years ago | 2394 views
Rating:

Emily Dougherty presents on the nature and physics of lightning.

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00:05:00

Light

by Shalini Golla
Light
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 10 years ago | 882 views
Rating:

Shalini Golla presents on the science behind light.

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00:07:00

Nuclear Power in the United States

by Kelly Schwirian
Nuclear Power in the United States
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 10 years ago | 803 views
Rating:

Kelly Schwirian presents on nuclear power in the United States.

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