Thought for the month
“The intelligent man finds almost everything ridiculous, the sensible man hardly anything.” Johann Wolfgang von Goethe, Writer (1749-1832).
Wednesday, 14 December 2011
And then there was ...
A group of physicists working at Chalmers University of Technology in Gothenburg, Sweden, have succeeded in proving that visible photons can be produced from the virtual particles that have been thought to exist in a quantum vacuum. The experiment is based on one of the most counterintuitive, yet, one of the most important principles in quantum mechanics: that vacuum is by no means empty nothingness; it teems with virtual particles flitting in and out of existence. Using the vibrational speeds associated with a superconducting quantum interference device to enact the dynamical Casmir effect the team was able to convert the virtual photons into real ones. Almost magical.