Used with
permission of Maiken Naylor, University at Buffalo, Buffalo, NY, USA,
http://ublib.buffalo.edu/libraries/units/sel/exhibits/stamps
..Abu Ali al'Hasan ibn al'Haitam..Hermann von Helmholtz
..Albert Michelson..James Clerk Maxwell
..Andre Marie
Ampere
..Joseph von
Fraunhofer..Benjamin Franklin
..Michael Faraday's
..Chandrasekhara Venkata Raman
..Nikola Tesla
..Guglielmo Marconi
..Prokop Divis
..Gustav Robert Kirchhoff
..Robert Alexander Watson-Watt
..Hans Christian
Oersted..Spectra..Heinrich Hertz