#### A Century of Quantum Mechanics

In October 2011 we celebrated the centenary of the Solvay conferences that played a unique and important role in the development of twentieth century physics, most notably in the quantum revolution whose birth overlapped the initiation of these meeti....

More details | Watch now#### A Quantum Gas

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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Stanislav Gorb is Professor of Zoology at the University of Kiel, Germany, with an interest in functional morphology and biomechanics. Here he discusses clustering as a form of self-assembly, and applications in adhesion.

More details | Watch now#### Centre of mass

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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A short video showing a simple classroom method of checking the way in which this force is related to mass, speed and radius.

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

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A description and demonstration of the way in which craters formed by dropping objects into sand can be linked to some elementary physics

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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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The ‘Common Sense’ that is needed to survive does not necessarily provide correct answers to the way the Universe works. Science is actually not that old, it really only started in about the 16th Century and was a byproduct of ‘The Enlightenm....

More details | Watch now#### Going round in circles – how do we do it?

A presentation showing both the ideas about centripetal force and a simple classroom method of checking the way in which this force is related to mass, speed and radius.

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

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