Quantum electrodynamics, commonly referred to as QED, is a quantum field theory of the electromagnetic force. Taking the example of the force between two electrons, the classical theory of electromagnetism would describe it as arising from the electric field produced by each electron at the position of the other.
Season 2. Season 4. Season 3 of Vikings premiered on February 19, 2015 on History in Canada and in the United States and concluded on April 23, 2015, consisting of 10 episodes. The new 10-episode season begins with...
There were 10 series. Most had 24 episodes. A few had only 22. The 10th series only had about 18 because they'd run out of ideas. Having done a search for a page with all the episodes on: by my calculations the total number of episodes is 236. And as additional information: Joey, the Friends spin-off series, had 2 series with 24 episodes in the first series and 22 in the second, making a total of 46. Source(s): http://www.friends-tv.org/epguide.html.