Richter vs Mercalli: The Number That Erased His Name

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RICHTER vs MERCALLI go head to head — and every jab is rooted in real history.

RICHTER

I gave the Earth a single honest number—magnitude, from a seismograph, no matter who felt it or who didn't.

MERCALLI

A number in a laboratory means nothing to the man whose church just fell on him; my scale measures what people and buildings truly endure.

RICHTER

But your Roman numerals depend on cracked plaster and frightened witnesses—a magnitude 7 is a 7 in Tokyo, in Rome, on the empty seafloor.

MERCALLI

And yet when the ground stops shaking, they run to ask 'how bad was it?'—not your logarithms, but my damage—so tell me, whose scale did the survivors need?

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