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Science  09 Apr 1999:
Vol. 284, Issue 5412, pp. 219
DOI: 10.1126/science.284.5412.219c

Course of physics. The American Physical Society is toasting its 100th birthday with a new Web timeline celebrating the past century or so of physics milestones, from the discovery of radioactivity in 1896 through lasers, quarks, and neural networks. Includes multimedia activities for students.

Looking for a moon shadow.Europe is gearing up for the 11 August total solar eclipse, which will cruise across the globe in a line from southern England to Bombay, India. This site offers a wealth of info including school projects and links to eclipse sites in many countries, and to a great NASA technical site.

Prime prize. Some Netizens donate idle desktop time for projects like finding prime numbers or combing radio data for signals from extraterrestrial life. To encourage even more “cooperative computing,” the Electronic Frontier Foundation is offering up to $250,000 to people who find new primes.

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