Question 1 of 5
Which important publication starts with the following sentence?
“It is known that several substances have the property of producing certain bright lines when brought into the flame.”
- On the Quantum Theory of Radiation,
Albert Einstein, 1917.
- Chemical Analysis by Observation of Spectra,
Gustav Kirchhoff, Robert Bunsen, 1860.
- The Theory of Heat Radiation,
Max Planck, 1914.