What Causes The Northern Lights

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What causes the northern lights

Have you ever wondered what causes the Auroras in the Northern Hemisphere? Auroras are heavenly flashes of light, that can be seen with the naked eye. Scientists have been studying the auroras for many years. In fact, it is so interesting that scientists have even studied the DNA of dolphins. They have found that these animals can also display aurora.

There has long been a theory by scientists that the Auroras are caused by electrons moving around in the atmosphere. For years, they have been trying to prove if electrons are responsible for creating the light we see. It is believed by scientists that when an electron strikes the phosphor, it excites the atom and creates a light emission.

This theory was first proven in 1950, by James Clerk Maxwell, with the help of his new radio technology. Later, other scientists were able to confirm this concept. In fact, the strength of the electromagnetic waves emitted by atoms can be measured very easily.

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5th Ocean Added To World Geography

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5th ocean added to world geography

The 5th Ocean Atlas is the official publication of the United States Department of State. The tome includes a history of the development of State Department Geographic Information System, which is in turn the basis for a number of other State Department publications. The publication is comprehensive and covers all aspects of United States Geography. It contains maps of all national boundaries and islands as well as all coastal areas and bodies of water in the US. The volume consists of one volume covering the whole country, another volume concentrating on the States and another volume covering the District of Columbia. Maps of the Indian Ocean and the Pacific Ocean are also included.

In general, a coastline is a defined border between two countries. This definition has been expanded since the introduction of the 5th Ocean Atlas since cartographers no longer regard the coastline as bounded by internal or external lines. The Fifth Ocean Atlas treats a coastline as a continuous strip along which international relations can be well understood. A boundary will only be indicated if it can be shown from an aerial perspective. This is especially true with oceanic boundaries.

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