FIELDS (corn, electromagnetism)
The importance of electromagnetism for our modern picture of nature cannot be overstated, as almost all the phenomena of everyday life which are not due to gravity are manifestations of it. For example all chemistry is an aspect of electromagnetism. This is because chemical reactions involve rearrengements of electrons in their orbit around atomic nuclei, and it is the electrical force that holds the electrons in those orbits. Light is also an aspect of electromagnetism, for it is a wave traveling through the fields that convey the electric and the magnetic forces.
Lee Smolin, The life of the cosmos, Oxford university Press, p.42