🔬 Discovery

Purkinje effect

Efecto Purkinje

Date
1825 · confidence medium
Place
Breslau (Wrocław), Poland
Credited to
Jan Evangelista Purkyně
Field
Life & health

What was discovered

Czech physiologist Jan Evangelista Purkyně described in 1825, in Breslau, the shift of the eye's peak sensitivity toward blue as ambient light decreases, by which red colors appear to darken more than blue or green ones at dusk.

What it led to

  • Studies of dark adaptation
  • Design of night and emergency lighting
  • Understanding of rod-mediated scotopic vision

Links

Sources✓ verified 2026-09-28