You can never have enough sodium spectra, as indicated by the continuing search engine referers. This image, taken with a Nikon 990 hand-held to the eyepiece of a Vreeland emission spectroscope, shows the doublet nature of the sodium D line:
As an amateur scientist, I am often exposed to interesting works. I have recently received several copies of amateur physicist Gong BingXin's Uncertainty Principle is Untenable in which Heisenberg's basic principle of quantum mechanics is deconstructed using two modest thought experiments.
Although the approach is naive, it has caused me to think about this idea that has been the causative basis for our understanding of the universe at it's most fundamental level. Uncertainty means that, on a very tiny scale, location and energy are connected and variable without regard to imposed constraints.
Cartoon by John Richardson, 1998
For example, an electron's position cannot be determined exactly when it's energy is known precisely. Since the energy of an electron is well defined when it is in an orbital in an atom, we can only state the probability of it's location. By using Heisenberg's matrices (or other techniques) a map of the probabilities of the electron's presence can be drawn. These are the curious shapes of the atomic orbitals that vex college students so.
These shapes determine all the properties that make the physical world the way it is. Unless Dr. Gong can show some explanation for everything uncertainty explains, his argument does not further our understanding, and is not good science.
