来自MSN11 个月
A 13-year-old built a 'death ray' using a 2,000-year-old concept from Greek inventor Archimedesdesigned a science-fair project to see whether such a feat was possible with a miniature version of the death ray. Though he wasn't trying to set anything on fire, he found that his setup ...
The event is scheduled from 7:30 a.m. to 12:30 p.m. About a third of Kern County Fire Department personnel ... video player for a insulated cup science fair project idea demonstration.
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