Optical spectroscopy

Cooper Aligns Magnetic Oxide Sample
MIT Summer Conference on Spectroscopy
Cadmium (Cd) and Mercury-198 (Hg) interference fringes
Mercury-198 (Hg) interference fringe
Cadmium (Cd) interference fringes of red light
Cadmium (Cd) and Mercury-198 (Hg) spectra demonstration conducted by William F. Meggers
First Meggers Award
Albert Michelson's Ruling Engine No.1 showing detail of the diamond cutting head and carriage
Henry Rowland and his ruling machine
Large ruling engine at Mount Wilson Observatory
Edward J. Martin with a spectroscope
Albert Michelson's Ruling Engine No.1 for ruling diffraction gratings
Rowland Grating Ruling Engine
Iron doublet (6301-72) and triplet (6302-71) in two spot spectra
David MacAdam works with his colorimeter
Albert Michelson inspecting equipment in a laboratory
The Rowland Grating Ruling Engine.
Spectra showing the Zeeman effect the splitting of lines in a magnetic field
National Bureau of Standards Infrared Grating Spectrograph, using 1 meter-focus off-axis parabola
Albert Michelson inspecting equipment in a laboratory

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