Physicists have created a new kind of light by chilling photons into a blob state.
Just like solids, liquids and gases, this recently discovered condition represents a state of matter. Called a Bose-Einstein condensate, it was created in 1995 with super-cold atoms of a gas, but scientists had thought it could not be done with photons, which are basic units of light. However, physicists Jan Klärs, Julian Schmitt, Frank Vewinger and Martin Weitz of the University of Bonn in Germany reported accomplishing it. They have dubbed the new particles "super photons."
Particles in a traditional Bose-Einstein condensate are cooled down close to absolute zero, until they glom onto each other and become indistinguishable, acting as one giant particle. Experts thought photons (packets of light) would be unable to achieve this state because it seemed impossible to cool light while concentrating it at the same time. Because photons are massless particles, they can simply be absorbed into their surroundings and disappear, which usually happens when they are cooled down.