| Quote: | | | Originally Posted by ronohungkar | | | | |
| Wow Mintush! Just wow!! Love the 1st two pics! It really is amazing!  | |
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AMAZING.....i know
cholo jai

jabe amar sathe?
below image don't know where it's but it's beautiful....
The aurora borealis—the northern lights—is one of the most spectacular natural phenomena on Earth. Its beauty and splendor are often beyond description.

The aurora has fascinated, and often terrified, humans for thousands of years. From ancient times, tales and narratives about the aurora have been told by polar explorers, adventurers, fur traders, and early settlers.
The aurora also has fascinated many famous philosophers and scientists, among them Aristotle, Descartes, Goethe, Dalton, and Franklin.

Early researchers came up with many theories and scientific explanations for the aurora. They wondered if it was reflected firelight from the edge of the world, sunlight reflected from arctic ice, or maybe reflected light from ice crystals high in the sky.

Not until the middle of the 19th century did scientists begin to make headway in the study of the aurora, and there are still many unanswered questions about it. Indeed, the aurora has provided one of the most challenging problems encountered in modern science.
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Thunder and lightning as natural phenomena Electrical fields emerge mainly as the result of strong vertical movements of air masses, friction, and the emergence and transformation of precipitation. Lightning, in the visual form of a flash and in the audio form of thunder, appears during electrical discharge. Lightning mostly strikes between storm clouds or parts thereof, but sometimes also between clouds and the ground. Lightning searches for the path of least resistance, which is the path where the air is most ionised (divided into positive and negative charges), or the path with the greatest electrical conductivity. The electrical current in lightning reaches an intensity of 100,000 amperes. Electrical fields are also generated during fine weather, but they are not so strong. Lightning is accompanied by a loud bang, which occurs because the air in the lightning's path instantly flares up, substantially expands and then immediately contracts. During the bang the sound waves rebound from the ground and air masses; as a result we hear the bang in the form of thunder. We can use the length of time between the lightning bolt and the thunder to calculate the approximate distance of the bolt from the spot where we are located. Three seconds are approximately equivalent to a distance of one kilometre.
You are protected against lightning in a house equipped with a lightning conductor or in a car. Every year lightning finds its victims in forests and valleys, pastures and mountains, which means it can strike even in places one would never expect it to strike.
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SUN. Solar eclipse in Antarctica (Sonnenfinsternis) - please see AURORA! for more solar eclipses and natural phenomena