= Ralph Percy Hudson
{c}
{tag=Physicist}
= R. P. Hudson
{c}
{synonym}
= Ralph P. Hudson
{c}
{synonym}
An experimental <nuclear physicist> who coauthored the <Wu experiment> testing <parity conservation> in <beta decay>. The collaboration combined low-<temperature> nuclear orientation with directional radiation counting. Cooling the <cobalt-60> sample made it possible to compare emitted <electrons> with a known nuclear orientation rather than average over random <spins>.<The Reversal of Parity Law in Nuclear Physics by National Institute of Standards and Technology>[Collaboration list and account of low-temperature nuclear alignment]{ref}
\Image[https://www.nist.gov/sites/default/files/styles/220_x_220_limit/public/images/2016/09/26/ihudson.gif?itok=5dEjaDHh]
{title=Portrait of <Ralph Percy Hudson>}
{description=External portrait linked by the National Institute of Standards and Technology institutional exhibit.}
{source=https://www.nist.gov/pml/fall-parity/fall-parity-photo-gallery-short-biographies}
{width=220}
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