The heart receives its own supply of blood from a network of arteries, called the coronary arteries. Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet:
Walton, Ernest Thomas Sinton - Student Encyclopedia (Ages 11 and up) (1903-95), Irish physicist. Born in County Waterford, Ireland, Walton, with Sir John D. Cockcroft, received the 1951 Nobel prize in physics for the development of the first nuclear-particle accelerator.
The brilliant leap made by Heisenberg's quantum mechanics was made possible by a number of precursors. The BKS (Bohr, Kramers, Slater) theory provided the model that had to be disproved. An American scientist named John Slater had proposed the idea of a virtual radiation field that carried no energy but that was continually emitted and absorbed by virtual oscillators in an atom.