165 results found for physics

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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 | 14 years ago | 1557 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 | 14 years ago | 2843 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 | 14 years ago | 1615 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 | 14 years ago | 1648 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 | 14 years ago | 1865 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 | 14 years ago | 1506 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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00:07:00

Diffraction and Fourier Transforms

by Tega Edo
Diffraction and Fourier Transforms
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1818 views
Rating:

How we are affected by the very widespread manifesations of diffraction.

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00:10:00

Why can’t we see atoms?

by John Rodenburg
Why can’t we see atoms?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1669 views
Rating:

John talks about diffraction and the limits it puts on our ability to image atoms. Can we make an electron-microscope without lenses?

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00:08:00

Centre of mass

by Joe Wolfe
Centre of mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1841 views
Rating:

In finite objects, the total external force equals the total mass times the acceleration of a point called the centre of mass.

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00:06:00

Improving your Memory

by Matthew Bryan
Improving your Memory
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1305 views
Rating:

Looking at how hard disk drives can be improvedn

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00:10:00

Energy and power

by Joe Wolfe
Energy and power
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1451 views
Rating:

The total work done on an object equals the increase in its kinetic energy. For conservative forces, we can define potential energy.

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01:28:00

The Physics of Angels and Demons

by Harrison Prosper
The Physics of Angels and Demons
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1299 views
Rating:

Professor Harrison Prosper of FSU Physics Department looks at the science behind the recently released movie 'Angels and Demons', starring Tom Hanks and based upon a Dan Brown novel. Prof. Prosper discusses topics such as antimatter, dark matter, dar....

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00:10:00

Weight and contact forces

by Joe Wolfe
Weight and contact forces
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1734 views
Rating:

Carefully distinguish mass and weight. Hooke's law quantifies deformation. Contact forces have normal and frictional components.

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00:55:00

The Quantum World abserver by Electron Waves

by Akira Tonomura
The Quantum World abserver by Electron Waves
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1770 views
Rating:

Dr. Tonomura is a world renowned pioneer and authority in the field of electron holography, for which he has received many national and international recognitions. He is recognized for his contributions in the development of electron holography, the ....

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00:05:00

Light Beam

by Jonathan Hare
Light Beam
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1944 views
Rating:

Light is reflected off a flexible shiny surface fixed to the end of a plastic tube. When one speaks into the tubes sound vibrations pass down the tube and make the surface vibrate. The reflected light is therefore sent off from the surface in a con....

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00:07:00

Potato Battery

by Jonathan Hare
Potato Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 2743 views
Rating:

When two different types of conductors are pushed into a potato chemical reactions take place charging them up - we have a simple electrochemical cell. A potato, zinc screw and carbon rod produce about 1V. We experiment joining a few of these cells u....

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00:04:00

Shake-a-Gen

by Jonathan Hare
Shake-a-Gen
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1734 views
Rating:

This is a simple yet effective demonstration of electricity generation. 500 turns of wire are wound onto a 35mm film can and the two ends are attached to an LED light. A strong magnet is placed in the can and the lid fixed back in place. The generato....

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00:04:00

Seawater Battery

by Jonathan Hare
Seawater Battery
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 3157 views
Rating:

When two different metals are placed in a salt solution (an electrolyte) the chemistry produces a voltage. This is called a cell. By wiring up a number of these cells we can make a battery and use it to power electrical circuits.

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00:03:00

Three Windmills

by Jonathan Hare
Three Windmills
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1659 views
Rating:

Converting wind power into electricity seems like an ideal way of helping to solve our energy problems. However, the power generated by a windmill is dependent on the wind speed. If the wind drops to half its speed there is as little as an 1/8th of t....

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00:02:00

Parabolic Light Collectors

by Jonathan Hare
Parabolic Light Collectors
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 6045 views
Rating:

Parabolic surfaces can be used to concentrate energy for example to focus sunlight to heat things. Using an old World War II spot light mirror we demonstrate how easy it it is to concentrate enough energy to cause combustion. Finally, we show how to ....

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00:04:00

Temperature and States of Matter

by John Murrell
Temperature and States of Matter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 9778 views
Rating:

A short video explaining how to measure temperature.

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00:10:00

Measuring Temperature

by John Murrell
Measuring Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1623 views
Rating:

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00:10:00

Temperature Scales

by John Murrell
Temperature Scales
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1521 views
Rating:

John Murrell explains scales and colour changes with temperature, boiling and melting,

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00:01:00

Volume Changes with Temperature

by John Murrell
Volume Changes with Temperature
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1338 views
Rating:

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00:02:00

Some Materials Do Not Have Liquid Form

by John Murrell
Some Materials Do Not Have Liquid Form
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1394 views
Rating:

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00:02:00

Dry Ice and Wet Ice

by John Murrell
Dry Ice and Wet Ice
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 3482 views
Rating:

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00:01:00

Why Does Ice Float?

by John Murrell
Why Does Ice Float?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 5073 views
Rating:

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00:03:00

What is Matter? Solids, Liquids and Gases

by John Murrell
What is Matter? Solids, Liquids and Gases
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 10964 views
Rating:

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00:05:00

Flexibility, Elasticity, Heat Conduction

by John Murrell
Flexibility, Elasticity, Heat Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2295 views
Rating:

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00:04:00

Heat Conduction

by John Murrell
Heat Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 4233 views
Rating:

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00:02:00

Electrical Conduction

by John Murrell
Electrical Conduction
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1880 views
Rating:

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00:01:00

Hardness

by John Murrell
Hardness
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2175 views
Rating:

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00:03:00

Piezoelectricity

by Jonathan Hare
Piezoelectricity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1941 views
Rating:

Some minerals such as quartz can produce electricity simply by squeezing or bending them - these are called piezoelectric crystals. Here is a simple and cheap demonstration you can do.

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00:02:00

The Geiger Counter

by Jonathan Hare
The Geiger Counter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1763 views
Rating:

Although essentially a very simple device the Gieger Counter is an exquisitely sensitive detector of ionising radiation. It can detect a single particle. Here we demonstrate its use in detecting radiation from minerals and describe in simple terms ho....

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00:08:00

The Quest for The Higgs Particle

by Martinus Veltman
The Quest for The Higgs Particle
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1283 views
Rating:

A Breathtaking Journey into the Innermost Structure of our Universe. Ā Runner up: Best use of Animation and Best Short Documentary for the 2002 International Festival of Cinema and Technology.

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00:02:00

Hunting for Higgs – Why Build the Large Hadron Collider?

by Alom Shaha
Hunting for Higgs – Why Build the Large Hadron Collider?
for All ages,
Lectures | All ages | 15 years ago | 1358 views
Rating:

This short documentary explains why the Large Hadron Collider was built and what scientists are using the collider to look for.

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00:03:00

The Mystery of the Missing Mass

by Tara Shears
The Mystery of the Missing Mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1470 views
Rating:

Dr Tara Shears explains why scientists are convinced that Dark Matter exists and how a new experiment called the Large Hadron Collider might finally tell us exactly what this mysterious missing mass is made of.

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00:03:00

The Matter with AntiMatter

by Tara Shears
The Matter with AntiMatter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1580 views
Rating:

If equal amounts of matter and anitmatter were created at the birth of the universe then why does our universe seem to be made almost entirely from matter? Dr Tara Shears tells us how this mystery could be explained by the Large Hadron Collider exper....

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00:04:00

Big Bang – a tour of the Large Hadron Collider

by Brian Cox
Big Bang – a tour of the Large Hadron Collider
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1671 views
Rating:

Dr Brian Cox takes us on a tour of the Large Hadron Collider where the conditions moments after the Big Bang are to be recreated.

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00:04:00

Sizing Things Up

by Tara Shears
Sizing Things Up
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1550 views
Rating:

Dr Tara Shears explains that one of Science's greatest achievements is to have accurately measured everything from the width of the universe to the diameter of a quark. This film features an animated zoom in from the universe to the heart of a hydrog....

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00:52:00

The Seven Essential Highlights of QM Concepts in Chemical-Physics.

by Michael Kasha
The Seven Essential Highlights of QM Concepts in Chemical-Physics.
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1522 views
Rating:

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00:14:00

The Building Blocks of Matter

by Brian Cox
The Building Blocks of Matter
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1366 views
Rating:

The Large Hadron Collider at CERN is the biggest science experiment ever built. Scientists from all over the world are heading to CERN with the aim of recreating particles from the beginning of the universe. Dr Brian Cox takes us on a scientific jour....

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00:14:00

The Forces of Nature

by Brian Cox
The Forces of Nature
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1511 views
Rating:

Can everything that happens in the universe be explained in terms of just three forces? Particle Physicist Brian Cox talks us through the history of our scientific understanding, revealing why scientists have come to believe this. Brian explores the ....

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00:14:00

The Hunt for the Higgs

by Brian Cox
The Hunt for the Higgs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1409 views
Rating:

Particle physicist Brian Cox explains how quantum mechanics has changed the way that we think the world works and why it predicts the existence of a particle that has never been seen. The Higgs boson is a mysterious particle that explains why things ....

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00:59:00

Electron Waves Unveil The Microcosmos

by Akira Tonomura
Electron Waves Unveil The Microcosmos
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1733 views
Rating:

Since the time of Faraday lines of force in space have been 'observed' by sprinkling iron filings around magnet. The lecturer explains how, with modern techniques we can 'see' lines of force inside a solid magnet. The studies reveal a fascinating dyn....

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01:00:00

Nuclear Power Plant Safety – What’s the Problem?

by John Collier
Nuclear Power Plant Safety – What’s the Problem?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1699 views
Rating:

A significant proportion of our electricity is generated by thermonuclear reactions. The dangers attached to these processes and the radioactive products are well known and publicised. Much less well known are the measures taken to ensure that the hi....

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00:57:00

How X-rays cracked the structure of DNA

by Amand Lucas
How X-rays cracked the structure of DNA
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1555 views
Rating:

An elegantly simple optical diffraction demonstration with an inexpensive laser pointer is used to show the way in which x-rays can reveal the structure of crystals, and in particular, the double helix structure of DNA.

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00:58:00

Spectroscopy and beyond

by Richard Friend
Spectroscopy and beyond
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1507 views
Rating:

Professor Sir Richard Friend is Cavendish Professor of Physics and part of the Optoelectronics Group at the Cavendish Laboratory, University of Cambridge.His research interests cover: 1) Conjugated Polymers, in particular the development of new semic....

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01:18:00

Richard Feynman – The Douglas Robb Memorial Lectures – Part 1

by Richard Feynman
Richard Feynman – The Douglas Robb Memorial Lectures – Part 1
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 3288 views
Rating:

A gentle lead-in to the subject, Feynman starts by discussing photons and their properties.

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01:39:00

Richard Feynman – The Douglas Robb Memorial Lectures – Part 2

by Richard Feynman
Richard Feynman – The Douglas Robb Memorial Lectures – Part 2
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1962 views
Rating:

What are reflection and transmission, and how do they work?

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01:40:00

Richard Feynman – The Douglas Robb Memorial Lectures – Part 3

by Richard Feynman
Richard Feynman – The Douglas Robb Memorial Lectures – Part 3
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1442 views
Rating:

Feynman diagrams and the intricacies of particle interaction.

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01:34:00

Richard Feynman – The Douglas Robb Memorial Lectures – Part 4

by Richard Feynman
Richard Feynman – The Douglas Robb Memorial Lectures – Part 4
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 2227 views
Rating:

What does it mean, and where is it all leading?

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00:14:00

In search of the mysterious magnetic monopole

by David Milstead
In search of the mysterious magnetic monopole
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1346 views
Rating:

Searching for the mysterious magnetic monopole.

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00:59:00

Black holes, Wormholes and Time Travel

by Paul Davies
Black holes, Wormholes and Time Travel
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 6304 views
Rating:

The idea of time travel makes great science fiction, but can it really be achieved? Paul Davies, Visiting Professor of Physics at Imperial College, describes wormholes in space and other ways that might allow travel into the past or future.

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00:25:00

Communication with Space Probes and beyond

by Colin Byfleet
Communication with Space Probes and beyond
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 6128 views
Rating:

The main problems associated with communicating with distant space probes like Voyager 1 are investigated. The role played by diffraction in limiting the amount of power receivable on Earth is discussed. The further problems of reaching a nearby st....

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00:33:00

Communication on Earth, using Cables and Satellites

by Colin Byfleet
Communication on Earth, using Cables and Satellites
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1933 views
Rating:

A brief look at the Physics behind sending signals along cables and via geostationary satellites. An experiment to measure the speed of an electrical pulse in a cable is described and the Physics of the orbits of communcations satellites is develope....

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00:10:00

Newton’s laws of motion

by Joe Wolfe
Newton’s laws of motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1415 views
Rating:

F=ma (laws 1&2). Forces come in pairs that add to zero (3). Newton's laws apply in inertial frames of reference. Some common approximations made in applying them.

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00:08:00

Simple harmonic motion

by Joe Wolfe
Simple harmonic motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1397 views
Rating:

In simple harmonic motion, displacement, velocity and acceleration vary sinusoidally with time, but with different phases.

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00:08:00

Circular motion

by Joe Wolfe
Circular motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1918 views
Rating:

Uniform circular motion: angular displacement and velocity are introduced and centripetal acceleration is determined.

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00:09:00

Projectile motion

by Joe Wolfe
Projectile motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1369 views
Rating:

Motion with uniform acceleration, such as in a uniform gravitational (or electric) field is projectile motion, analysed here with examples.

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00:06:00

Motion with constant acceleration (kinematics)

by Joe Wolfe
Motion with constant acceleration (kinematics)
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1733 views
Rating:

Kinematics quantifies motion without explaining the causes of it. Here we study accelerations that are zero, positive or negative.

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00:05:00

Calculating Quantum Corrections to Collider Processes

by Fernando Cordero
Calculating Quantum Corrections to Collider Processes
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 1552 views
Rating:

A review of High Energy Particle Theory and Phenomenology at FSU

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00:05:00

Nuclear Structure and Gamma-ray Spectroscopy

by Michelle Perry
Nuclear Structure and Gamma-ray Spectroscopy
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 1958 views
Rating:

The use of gamma-ray spectroscopy to study the structure of less well-known nuclei.

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00:04:00

Studying Macroscopic Stars Through Microscopic Nuclear Reactions

by Eric Johnson
Studying Macroscopic Stars Through Microscopic Nuclear Reactions
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 1301 views
Rating:

Astrophysics is one of the driving forces behind the study of nuclear reactions and nuclear structure. The FSU Department of Nuclear Physics has the facilities and techniques needed to experimentally explore both of these topics. This video briefly....

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00:18:00

Isaac Newton and Gravitation

by Colin Byfleet
Isaac Newton and Gravitation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 16 years ago | 3218 views
Rating:

A look at what was known when Newton started to develop his theory of gravitation and how he used these ideas and data to make his great forward step

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00:27:00

The Klein Paradox 2

by Slobodan Danko Bosanac
The Klein Paradox 2
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 1530 views
Rating:

Standard analysis of the relativistic dynamics of scattering on a step potential leads to a paradox that contradicts the standard interpretation of a wave function in nonrelativistic theory. It is shown how is this result obtained by not being carefu....

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00:18:00

The Klein Paradox 1

by Slobodan Danko Bosanac
The Klein Paradox 1
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 1580 views
Rating:

Standard analysis of the relativistic dynamics of scattering on a step potential leads to a paradox that contradicts the standard interpretation of a wave function in nonrelativistic theory. It is shown how is this result obtained by not being carefu....

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00:37:00

A Quantum Gas

by Slobodan Danko Bosanac
A Quantum Gas
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 2116 views
Rating:

The quantum gas is an extreme state of an ensemble of atoms when their de Broglie wave length is of the same length as the size of the container. The ways of achieving this state are described and also how its temperature is defined.

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00:09:00

Special relativity

by Joe Wolfe
Special relativity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 18 years ago | 1417 views
Rating:

How extending Galileo's relativity to magnetism leads to Einstein's relativity, time dilation, length contraction, relativity of simultaneity and E=mc2 .

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