appleton layer meaning

Noun: Appleton layer  'apultun 'leyu(r)

1. The highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
   - F layer, F region

Type of: part, region

Part of: ionosphere

Encyclopedia: Appleton layer

[Electronics]
Collectively, the F1 and F2 layers of the ionosphere, at a height between 150 and 400 kilometers above the surface of the earth.

Examples

1. "for his investigations of the physics of the upper atmosphere especially for the discovery of the so-called appleton layer
2. It is this which is often referred to as the Appleton Layer as is responsible for enabling most long range short wave telecommunication.
3. "' Nobel Prize winners "': Sir Appleton layer, Sir John Cockcroft KCB, physicist who first split the atom, Allan Cormack, for the invention of the CAT scan, Paul Dirac, one of the founders of quantum mechanics, Sir Nevill Francis Mott, for work on the behaviour of electrons in magnetic solids, Abdus Salam, for unifying the electromagnetic force and the weak force, Frederick Sanger, molecular biologist, Maurice Wilkins, awarded Nobel prize for Medicine or Physiology with Watson and Crick for discovering the structure of DNA, and Eric Maskin ( visiting & honorary fellow ), awarded the Nobel Memorial Prize in Economic Sciences in 2007.