🔬 Discovery

Krypton

Kriptón (Kr, Z=36)

Date
1898 · confidence high
Place
University College, London, United Kingdom
Credited to
William Ramsay and Morris Travers
People
👤 Morris Travers1872–1961👤 William Ramsay1852–1916
Field
Matter & energy

What was discovered

Ramsay and Travers found it in the residue of evaporated liquid air, identifying it by its spectral lines.

Its name means 'hidden'.

What it led to

  • The definition of the metre (1960-1983) via the Kr-86 line
  • Flash and high-intensity lamps
  • Detection of nuclear tests via Kr-85
🕸️ View in the graph

Built on

  • Liquefaction of air
  • Spectroscopy

Made possible

📄 Original publication

On a new constituent of atmospheric airWilliam Ramsay, Morris William Travers · Proceedings of the Royal Society of London · 1898

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