Atomic physics although they could be described and classified by their properties (in bulk). The invention of the periodic system of elements by Mendeleev was another great step forward. The true beginning of atomic physics is marked by the discovery of spectral lines and attempts to describe the phenomenon, most notably by Joseph von Fraunhofer. The study of these lines led to the Bohr atom model and to the birth of quantum mechanics. In seeking to explain atomic spectra an entirely new mathematical model of matter was revealed. As far as atoms and their electron shells were concerned, not only did this
Voyage to the Bottom of the Sea radiation belts had only recently been discovered, and much of what the film says about them is made up for the film. Discoveries since then clearly invalidate what the film says: the Van Allen belts (actually somewhat more radiation-dense portions of the magnetosphere) are made up of sub-atomic particles trapped by the Earth's magnetic field in the vacuum of space and cannot catch fire, as fire requires oxygen, fuel and an ignition source, all of which are insufficient in the Van Allen Belts. Unburned hydrocarbon emissions have never reached concentrations that could support a "skyfire." The film's submarine design is