(Image credit: Chasing Light - Photography by James Stone via Getty Images) Green auroraĪurora australis or southern lights over Betsey Island, Tasmania. The following sections will explore how atmospheric composition and the altitude at which solar particles collide with these gases plays a crucial role in determining the colors of auroras. Our air also contains trace amounts of neon, helium, methane, krypton, ozone and hydrogen, as well as water vapor. The color of the neon light depends on the gas mixture inside the tube, just like the color of auroras depends on the gas mixture in the atmosphere.Įarth's atmosphere is approximately 78% nitrogen, 21% oxygen, 0.93% argon and 0.04% carbon dioxide. The process is similar to how neon lights work: When the molecules and atoms get "excited" by electrons, they must return to their original energy (ground state) and do so by releasing the energy as photons (light). The electrically charged particles then enter Earth's atmosphere, exciting gas atoms and molecules and generating auroras. Earth's magnetic field then redirects the particles toward the north and south poles. For more information on our products, please visit our FAQS.Auroras are caused by energized particles from the sun slamming into Earth's upper atmosphere at speeds of up to 45 million mph (72 million kph).The customer is responsible for reviewing sizes/dimensions carefully before ordering.We can then discuss exchanging for the correct item. If there is a defect or incorrect nature of the items - such as size or color please let us know within 2 days of receiving your product. We can not accept returns or exchanges.This specific item ships directly from our supplier in California.Fabric backdrops are shipped separately from our printed backdrops/floordrops.To release the wrinkles from shipping, iron with a warm iron, or steam while hanging. Measurements may not be exact due to hemming but will be as close as possible.ĭrops are packaged very tightly for shipping.Sewn in rod pocket for hanging, professionally finished edges, and is machine washable/dryable.Wrinkle resistant fabric is great for draping, hanging straight, or taking on location. Poly/Poplin matte fabric has a tighter weave than muslin, giving you a truer bright color.Perfect for photo booths, smash cake sessions, and portrait photography!.HI, AK, APO, International: please email to order.You must select your country from the drop down to add the shipping price for the individual item.
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