In 1999, Harvard physicist Lene Hau was able to slow down a beam of light to 17 meters per second. In 2001, she was able to stop a beam of light completely.
Unbelievable facts
In 1999, Harvard physicist Lene Hau was able to slow down a beam of light to 17 meters per second. In 2001, she was able to stop a beam of light completely.