section
item
Alexander Graham Bell
1847 - 1922
1890
Alexander Graham Bell conceived the first electric
heater, consisting of high-powered incandescent
lamps, placed in a metal box.
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)
