Seeing the invisible: observing the dark side of the universe
It seems that most of the universe is made up of mysterious ingredients which we cannot see directly. Dr Bridle describes in pictures 'gravitational lensing', the bending of light by gravity, which is predicted by Einstein's General Relativity. Dr Br....
More details | Watch nowBehaving badly
Are environment, or genetics, more to blame when a human being turns to a life of crime? What does it mean to be criminally insane? And how effectively can a criminal tendency be treated with drugs? What different lights can literature and science sh....
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Raman spectroscopy is a light scattering technique primarily used in the characterisation of vibrational modes of molecules and therefore in assessing the structure and composition of materials.
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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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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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D. Bruce Means gives a presentation of the ecological and biological diversity of the region around the Florida panhandle. Dr. Means gave particular attention to the unique climate and environment of the area. He lists the region as one of six biol....
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Diffraction and Fourier Transforms
Why can’t we see atoms?
John talks about diffraction and the limits it puts on our ability to image atoms. Can we make an electron-microscope without lenses?
More details | Watch nowMeasuring the speed of pulses
A short clip showing the experimental measurement of the speed of electrical pulses in a cable - a large fraction of the speed of light.
More details | Watch nowLight Beam
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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