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Precision measurement and wave physics · 1842–1919

John William Strutt, Lord Rayleigh

Rayleigh worked across sound, light, and the behavior of gases. His careful comparisons found that nitrogen from air and nitrogen from chemical preparations did not have quite the same density. The discrepancy encouraged a search that led him and Ramsay to argon. His work illustrates how an apparent nuisance in precision measurement can become evidence that a sample is not what its label suggests.

Contribution & context

He contributed the density problem and physical investigation behind argon’s identification. The 1904 Nobel Prize in Physics recognized his gas-density research and the discovery connected with it.

John William Strutt (Lord Rayleigh)

Discoveries in context

The missing ingredients of ordinary air ↗

A small density discrepancy opened a new column of the periodic table through the combined work of physicists and chemists.

Sources & further reading

  1. John William Strutt (Lord Rayleigh) ↗University of St Andrews — MacTutor History of MathematicsHistorical account · Source checked

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