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.
What was the Seven Years War and how did it contribute to the problems between Great Britain and her colonies? The Seven Years War was a global conflict which ran from 1756 until 1763 and pitted a coalition of Great Britain and its allies against a coalition of France and its allies.The war escalated from a regional conflict between Great Britain and France in North America, known today as the French and Indian War.George Washington, a wealthy Virginia planter and an officer in the Virginia militia, served under British General Braddock in the early years of this conflict.n April 1763, George Grenville replaced Lord Bute as the Prime Minister. Grenville, a former First Lord of the Treasury, wanted the American colonies to contribute to the costs of maintaining a British Army in North America after the war.