Science: Death of a Law

The universe last week was just as substantial as it had ever been; the ground underfoot was just as firm. But for physicists who search for the inner secrets of matter, a new and tempestuous age had begun. One of their basic laws of nature had been proved not a law at all. From now on their erudite science would never be the same again.

The excitement started when Columbia University told about two experiments proving that the "parity law," one of the cornerstones of nuclear physics, is a man-made convention which does not bind...

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