s******o 发帖数: 298 | 1 The heart of the Sudbury Neutrino Observatory is an acrylic sphere filled
with heavy water and surrounded by photomultiplier tubes. These detect flashes
of light produced when neutrinos interact with the water. This fisheye view
was taken from beneath the sphere before the bottom panel of detectors was
installed. Courtesy Ernest Orlando, Lawrence Berkeley National Laboratory.
By Govert Schilling
April 22, 2002 | Neutrinos have mass, they change identity when passing
through matter, and the Stand |
|