🔬 Discovery

Indium

Indio (In, Z=49)

Date
1863 · confidence high
Place
Freiberg, Saxony, Germany
Credited to
Ferdinand Reich and Hieronymus Theodor Richter
People
👤 Ferdinand Reich1799–1882👤 Hieronymous Theodor Richter1824–1898
Field
Matter & energy

What was discovered

While searching for thallium in zinc ores, Reich (who was colour-blind) and Richter observed an unknown indigo-blue spectral line.

Reich needed Richter to observe the colour because of his colour blindness.

What it led to

  • Indium tin oxide (ITO) for touchscreens
  • Indium phosphide semiconductors
  • Low-melting-point solders

Built on

  • Spectroscopy
  • Discovery of thallium

Made possible

  • Touchscreen (ITO)
  • InGaN LED

Links