Nobel Prize in Physics in 1904
= Nobel Prize in Physics in 1904
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<Lord Rayleigh> received the award for gas-<mass density> investigations and the discovery of <argon>.<The Nobel Prize in Physics 1904 by Nobel Prize Outreach>[Official summary: laureates, prize shares and motivation]{ref} The <Rayleigh-Ramsay argon density experiment> shows how a small reproducible density discrepancy can reveal a new <chemical element>.