The Sudbury Neutrino Observatory in Ontario, Canada is a 12-m sphere buried 2.1 Km below the ground in an old mine shaft. It is filled with heavy water, which consists of oxygen and deuterium, an isotope of hydrogen with one neutron, and is surrounded by 9600 photomultiplier tubes to detect light produced as a result of collisions by neutrinos.
This image is used with permission of the Sudbury
The star chart background was produced on a Macintosh with the Voyager II program,
and are ©1988-93 Carina Software,
830 Williams St., San Leandro, CA 94577, (510) 352-7328. Used under license.
Last update: 1999 July 12
Please send questions, comments, suggestions, or corrections to email@example.com.
The material on this website may be reused as described under the Open Course License.
The Gateway to Educational Materials (GEM) is the key to one-stop, any-stop access to thousands of high quality lesson plans, curriculum units and other education resources on the Internet! GEM is a project of the U.S. Department of Education. The Introduction to Astronomy Webbook is catalogued in the Gateway, and Scott R. Anderson is a member of the GEM Consortium.