False Precision, Ya Think?

Somebody on a mailing list noted that Google Maps reports lat and long to 13 decimal places, and calculated that comes out to a precision of about eleven Ångströms (Angstroms for the Unicode-impaired).

For folks whose physics is a few years behind them (or ahead of them!) Ångströms are commonly used to measure the wavelength of light – one Ångström is 10-10 meters; a piece of paper is about one million Ångströms thick.

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