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Vortices and Fractals and Knots in Light's Darkness

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19:30 – 21:30 24 Feb 2010
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Frank Lecture Theatre,
H. H. Wills Physics Laboratory,
University of Bristol
Tyndall Avenue,
Bristol BS8 1TL

Speakers: Dr Mark Dennis (Bristol) and Prof Miles Padgett (Glasgow)

In a light beam, the flow of light through space is similar to water flowing in a river. Even though the light from something like a laser pointer travels in a straight line, it can also flow in whirls and eddies. These swirls of light are called optical vortices. Along the vortices the intensity of light is zero, i.e. darkness. The light all around us is filled with these dark lines, even though we can't see them. In natural fields the lines map out fractal paths but using specially designed holograms one can twists these dark filaments within the light into knots.

Event type: Lecture/Talk
Organised by: South West Branch
Contact details: James Annett
chair-sw@physics.org

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Location icon
Frank Lecture Theatre,
H. H. Wills Physics Laboratory,
University of Bristol
Tyndall Avenue,
Bristol BS8 1TL
Clock icon
19:30 – 21:30 24 Feb 2010
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Link copied!