One input to a formula developed by this physicist is half of the full width at half maximum of a Breit-Wigner distribution. In quantum metrology using a definition based on N probes, this scientist names a limit that assumes that precision scales 1/N and which can only be achieved in noiseless systems. A formula named for this physicist was generalized by Robertson for any arbitrary observables. One variation of that formula named for this physicist is used with (*) measured energy of a short-lived particle to characterize particle lifetime. Kennard refined a relation proposed by this physicist to set h-bar over 2 as the lower limit of the product of the standard deviations of position and (10[1])momentum. For 10 points, name this German physicist who developed and typically names the uncertainty principle. ■END■ (10[1])