Scientists debate whether the old masters used optical aids
Like a defense lawyer in court, David G. Stork was eager to know whether his closing argument was winning over his audience. Would a jury vote to convict? Stork asked the group assembled at NASA Goddard Space Flight Center early this month. None of the of the 100 or so people in the Greenbelt, Md.–facility raised a hand–just the response that Stork, chief scientist of Ricoh Innovations in Menlo Park, Calif., was hoping for.
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