Nobel Prize in Physics in 1915
= Nobel Prize in Physics in 1915
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Awarded jointly to <William Henry Bragg> and <William Lawrence Bragg> for methods of determining <crystal structures> using <X-rays>. <Bragg's law> connects measured angles to lattice-plane spacings.<The Nobel Prize in Physics 1915 by Nobel Prize Outreach>[Official award record: laureates and crystal-structure subject]{ref}