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Isaac Newton
1642 - 1727
1665
Isaac Newton discovered the refraction of white
light into its natural colours red, orange, yellow,
green, blue and violet.
building
helivium.com
1665 - Isaac Newton
1800 - William Herschel
1801 - Johann Wilhelm Ritter
1805 - Humphry Davy
1854 - Heinrich Göbel
1857 - Heinrich Geissler
1873 - James Clerk Maxwell
1893 - Alexander Graham Bell
1893 - Niels Ryberg Finsen
1895 - Finsen lamp
1898 - Daniel McFarlan Moore
1899 - Richard Küch
building 3 (time line),
section 2 (before 1900)