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User: katanafx

Aurora Borealis http://www.hemmy.net has more interesting stuffs as well. Tags: aurora

User: Ulwan25

Entering The Borealis The Borealis from the game HL2EP2. or Maybe will be concluded in Episode Three Tags: Half Life 2 Episode Two Borealis e3 beta leak leaked

User: loneaurorawolf

Aurora Borealis or the northern lights My first video. Yay lots of views. Wow. O-o Lol Song: May it Be Artist: Enya Tags: Aurora Borealis

User: ramirashko

Aurora Borealis (The Northern Lights) Aurora Borealis, AKA The Northern Lights. Tags: Aurora Borealis Northern Lights Nature Phenomenon Wonder Magic

User: Omega999999999

Aurora Borealis Theme Winner The Aurora Borealis can come and go in the blink of an eye, ever changing, always amazing us, forever engraving it's beauty in our minds for ever. There is no music that could ever describe this wonder of nature, all I can share with you is my emotions of what I see... I wish It could go on for ever. Tags: Aurora Borealis Romance Music

User: catholichomeschool

Aurora Borealis / Educational Video Aurora Borealis / Educational Video. NASA Connect - DITNS - Aurora Borealis. This work is licensed under a Creative Commons Attribution 2.5 License. NASA Connect Segment exploring the Aurora Borealis or Northern Lights. This segment exlains this natural phenomena and its history. Year: 2004. Keywords: Aurora Borealis; Northern Lights; Artificial Aurora; Terrella; Magnetism; Earth; Electrons; Natural Phenomena; Plasma; Solar Wind; Light Particles; Atmospheric Gases; Duration: 00:04:39; Sponsor: NASA; Contributing Organization: NASA. Auroras (North/South Polar Lights; or aurorae, sing.: aurora) are natural colored light displays in the sky, usually observed at night, particularly in the polar zone. They typically occur in the ionosphere. Some scientists call them "polar auroras" (or "aurorae polares"). In northern latitudes, the effect is known as the aurora borealis, named after the Roman goddess of dawn, Aurora, and the Greek name for north wind, Boreas. It often appears as a greenish glow or sometimes a faint red, as if the sun was rising from an unusual direction. The aurora borealis is also called the northern polar lights, as it is only visible in the North sky from the Northern Hemisphere. The aurora borealis most often occurs from September to October and from March to April. The Cree call this phenomenon the Dance of the Spirits. Its southern counterpart, the aurora australis/southern polar lights, has similar properties. Australis is the Latin word for "of the South". Benjamin Franklin first brought attention to the "mystery of the Northern Lights." He theorized the shifting lights to a concentration of electrical charges in the polar regions intensified by the snow and other moisture. Auroras are produced by the collision of charged particles from Earth's magnetosphere, mostly electrons but also protons and heavier particles, with atoms and molecules of Earth's upper atmosphere (at altitudes above 80 km). The particles have energies of 1 to 100 keV. They originate from the Sun and arrive at the vicinity of Earth in the relatively low-energy solar wind. When the trapped magnetic field of the solar wind is favourably oriented (principally southwards) it reconnects with Earth's magnetic field, and solar particles enter the magnetosphere and are swept to the magnetotail. Further magnetic reconnection accelerates the particles towards Earth. The collisions in the atmosphere electronically excite atoms and molecules in the upper atmosphere. The excitation energy can be lost by light emission or collisions. Most aurorae are green and red emission from atomic oxygen. Molecular nitrogen and nitrogen ions produce some low level red and very high blue/violet aurorae. The light blue colors are produced by ionic nitrogen and the neutral nitrogen gives off the red and purple color with the rippled edges. Different gases interacting with the upper atmosphere will produce different colors, caused by the different compounds of oxygen and nitrogen. Tags: aurora borealis northern lights magnetism electrons solar wind plasma light particles earth atmosphere gases science USA

User: jhapeman

Aurora Borealis-WI Aurora Borealis over northern WI, September 2005. Time lapse of 2 hours, one shot every 35 seconds, each shot a 30s exposure with a Canon 1Ds Mark II camera and 17-40mm f/4L lens, f/4, ISO 1600. Tags: aurora borealis

User: MiXA

Borealis, the beginning. From the missing information mod. Tags: Borealis hl2 half-life

User: cannabeo

astral projection - aurora borealis nice song from sunrise:) Tags: goa psy trance astral projection aurora borealis

User: DavidLakota

Northern Lights of Alaska (Aurora Borealis) This video was made for my nephew, "Dancing Sky" and as a benefit for Girdwood Charter School. It shows how the Northern Lights come to be as seen from the sun, space and Earth. Live footage and 3-D modeling. Tags: Northern Lights Aurora Borealis Alaska David Lakota Dancing Sky photography and production training Girdwood Charter School higher education movie-making instruction

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