Graphene
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....
More details | Watch nowA New Kilogram in 2018: The Biggest Revolution in Metrology Since the French Revolution
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....
More details | Watch nowQuasi-Periodic Crystals
Quasicrystals - or, as Shechtman would prefer, quasi-periodic materials - now have scientists thinking about matter in a new light, but they also have many possible practical applications. Because of their uneven structure, quasicrystals do not have ....
More details | Watch nowSignals and Signalling Mechanisms in the Central Nervous System
Our brain is a network of about 10^11 neurons, which are connected by synapses. A neuron typically receives input from about 10000 other neurons, which can be either excitatory or inhibitory. The neuron integrates these inputs and generates an 'act....
More details | Watch nowRole of Cortical Noise in Vision
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 ....
More details | Watch nowWave Power
The UK coast is constantly being bombarded by sea waves. There is a massive amount of power available from these waves. Jonathan describes three different ways of generating electrical power from water waves.
More details | Watch nowSimple Electrical Generator
With some simple circuitry and a homemade hand powered generator Jonathan makes AC and DC electricity that could be used for charging a mobile phone or attaching to a wind turbine.
More details | Watch nowElectrical Generator
This short video shows one of the demonstrations for the Physics SEPNet exhibition - "Who will keep the lights on?" which travelled around the southern UK from February 2009. We describe and explain the electrical generator demonstration which Jona....
More details | Watch nowDevelopment of electrical and electrochemical biosensors based on aptamer-conjugated carbon nanotubes and glucose oxidase immobilized carbon nanotubes
Saino describes her success in developing electrochemical biosensors during her PhD course at Toyo University.
More details | Watch nowSisters in science: Hertha Ayrton, women and the Royal Society c.1900
Although women were not admitted as Fellows until 1945, by the beginning of the twentieth century there were a number of female scientists working at the margins of the Royal Society and its masculine scientific elite. This talk will introduce some o....
More details | Watch nowMaking the tiniest machines
Over the past few years some of the first examples of synthetic molecular level machines and motors Ñ all be they primitive by biological standards Ñhave been developed. These molecules respond to light, chemical and electrical stimuli, inducing mo....
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