The light fantastic
Light pulses that last just a billionth of a billionth of a second are allowing scientists to view the movement of electrons in detail for the first time. In the darkest month of the year, Horizon turns its gaze towards the science of light.
We discover how these rapid light pulses are helping scientists make ‘molecular movies’ of chemical reactions, and learn how Europe is leading the way in the use of extreme light, from the world’s brightest X-ray to one of the world’s most powerful lasers.
We investigate the new materials that are harnessing sunlight to clean our environment, from pollution-absorbing bus lanes to paint that purifies drinking water. Finally, we explore how new LED technology could not only dramatically cut Europe’s lighting bills but also influence the way we interact with our environment.
The world’s brightest pulses of light will reveal things that have never been seen before, according to Professor Wolfgang Sandner, director-general of the consortium building a facility known as the Extreme Light Infrastructure (ELI), which can produce lasers that are stronger than all the world’s power stations combined.
Dull, grey and boring: concrete may not be much to look at, but – along with other basic materials like paint – it is being upgraded so it can clean up pollution.
The widespread adoption of a new form of lighting could not only help dramatically reduce Europe’s energy use but also be used to improve people’s health and well-being.
Ultra-short bursts of light are helping scientists see the movement of electrons in real time and opening up the possibility of controlling their activity, with potential applications that include super-fast computing and a window into the mechanics of chemical reactions.