Science: Silver Seaweed

The new electron microscope leads scientists a long way downward into the realm of the infinitesimally small. Using magnetically focused electron beams instead of light beams, it discloses details (of germs, chemicals, etc.) 20 or more times finer than can be seen with optical microscopes (TIME, Oct. 28). Fortnight ago its beams cleared up another dark corner. In Rochester, tart, smart, British-born Charles Edward Kenneth Mees, head of research at Eastman Kodak Co., announced it had upset old notions of how silver is distributed in photographic films.

When a film is developed, silver atoms clump together in tiny islands. It used to...

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