H-alpha (HÎ±) is a specific deep-red visible spectral line in the Balmer series created by hydrogen with a wavelength of 656.28 nm, which occurs when a hydrogen electron falls from its third to second lowest energy level.herefore, the H-alpha line occurs where hydrogen is being ionized. The H-alpha line saturates (self-absorbs) relatively easily because hydrogen is the primary component of nebulae, so while it can indicate the shape and extent of the cloud, it cannot be used to accurately determine the cloud's mass.
Seven Years War (1756-1763) The Seven Years War was the first global conflict. It had two main fronts. The first, in Europe, was the hostility between Prussia and Austria, still simmering after the War of the Austrian Succession , which expanded through alliances to include all of Europe.
The Korean War: Started June 25, 1950 and ended in Panmunjom on July 27 1953 Although the war ended there was no winner. June 25th, 1950--July 27th, 1953 The Korean War was not a war, it was a U.N.-sponsored police action and is more properly called the Korean Conflict. And it did not end -- there is a more or less permanent cease-fire but no formal terms for ending the conflict were finalized. It is my understanding that they war/conflict has not ended.