Copyright © WGBH Educational Foundation 1998-2010
CONDITIONS OF USE:
RESTRICTIONS ON USE OF MATERIALS:
This ZOOM web site is owned and operated by WGBH Online. No material from this site or any Web site owned, operated, licensed or controlled by WGBH may be copied, reproduced, republished, uploaded, posted, transmitted, or distributed in any way, except that you may download one copy of the materials on any single computer for your personal, non-commercial home use only, provided you keep intact all copyright and other proprietary notices. Modification of the materials or use of the materials for any other purpose is a violation of WGBH's copyright and other proprietary rights. For purposes of this Agreement, the use of any such material on any other Web site or networked computer environment is prohibited.
National Science Foundation notice:
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.