Emission Phase was created in 2007-01.
Edelweiss Emission was created in 1989.
Emission Impossible was created on 2001-11-08.
London low emission zone was created in 2008.
Zero Emission Resource Organisation was created in 2002.
Phase IV was created in 1974.
Phase Linear was created in 1972.
Total Phase was created in 2001.
The Plateau Phase was created in 1982-03.
Terence Richard Mattoon has written: 'A three-phase argon plasma arc for analytical emission spectroscopy' -- subject(s): Argon, Emission spectroscopy
stimulated emission causes due to the energy difference between the higher and lower energy level state, but it doesn't depends in the case of spontaneous emission . spontaneous emission causes without any stimulation .In stimulated emission energy transfer is twice the energy transfer of spontaneous emission.
Another Phase was created on 2002-04-22.
Phase Three was created on 2003-07-22.