The mechanics of memory
How does the brain store and recall memories? A critical neural component of memory is the synapse, a specialist junction where one nerve cell releases a transmitter chemical to influence the excitability of another. Memorable events are thought to i....
More details | Watch nowHuman Sound
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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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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The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.
More details | Watch nowWhat is quantum non-locality?
In his talk Sandu will explain this quantum non-locality and present some of the uses of non-locality for quantum information and communication - strange effects such as teleportation - and will discuss the implications of non-locality for understand....
More details | Watch nowTaming the Quanta
Devices are now reaching the realm where individual structures are made up of only a few atoms so that quantum mechanics, the theory of the very small, is playing a crucial role. The inevitable quantum fluctuations produce noise which was initially e....
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Torques produce angular acceleration, moment of inertia 'resists' it. Rotational kinetic energy and angular momentum.
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p=mv. If external forces are zero, momentum is conserved. In collisions, energy may be conserved (elastic) or not (inelastic).
More details | Watch nowCentre 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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The total work done on an object equals the increase in its kinetic energy. For conservative forces, we can define potential energy.
More details | Watch nowCentripetal force – how do we measure it?
A short video showing a simple classroom method of checking the way in which this force is related to mass, speed and radius.
More details | Watch nowGoing 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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