注目の話題: 離婚し30年会ってない父親に会う場合; 海外の人に原爆について教える。; どっちの妻がいい？

Let's enjoy English!

No.310　13/02/03 12:28
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【An aurora】

An aurora is an art the sun and the earth have created.😃

Tremendous magnet in the earth which has made directions of south and north on the earth.The magnet made a magnetic field around the earth.🌏

Electric particles come flying at the earth.They fly from the sun,and gathered at the polar regions mainly.☀

The particles bump against other ones such as oxygen in the air,then light is given off.It's the aurora,however its mechanism hasn't been clear yet.😃

The aurora has been observed in both the Jupiter and the Saturn.The aurora appears in the ionosphere 電離層 of an altitude of about 100km.We can see the aurora in the Arctic or Antarctic Circle.🙌

An area where the aurora often has generated is a shape of a ring as if it were a doughnut.We call it what is called aurora opal.😃

Actual position of magnetic field around the Arctic is different from the Arctic on a map.Actual Arctic is a center of the ring of aurora.❄