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.
world war one started on the 28th July 1914 with the assassination of Franz Ferdinand, arch duke of Austro-Hungary and ended with armistice day on 11th November 1918 so from â¦ the end of the war (11.11.18) to the beginning of the 21st century is 81 years and 19 days not inclusive of 11.11.18 from the beginning of the war (28.07.14) to the start of the 21st century is 85 years and 157 days inclusive of 28.07.14 thus from today's date (08.01.12) it is 93 years and 27 days from the end of the ...