Using Planck’s Constant…. Electromagnetic Spectrum Calculations. Who was Max Planck?. He was a German physicist and is considered as the founder of the quantum theory (Wikipedia 2011).
When we see light from a neon sign, we are observing radiation from excited neon atoms. If this radiation has a wavelength of 640 nm, what is the energy of the photon being emitted?Planck’s Practice Problems
1. Light with a wavelength of 614.5 nm looks orange. What is the energy, in joules, of a photon of this orange light?
2. A photon of light produced by a surgical laser has an energy of 3.027 x 10 -19
J. Calculate the frequency and the wavelength of the photon.Planck’s Practice Problems
< http://en.wikipedia.org/wiki/Max_Planck >.
Wikipedia 2011, Planck’s Constant, viewed 10 September 2011,