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.311　13/02/03 15:03
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【Aurora】

Time when aurora generates coincides with the time when the sun is active.It's said 11 years,so the aurora also becomes active in a cycle of 11years.😃

It seems that 2.000 was a its peak,after that,its activity has been calm recently,but auroras of large-scale appears every year sometimes,then we can see the aurora at low altitude in Hokkaido.🙌

Colors of the aurora become red or green,though it depends on the particles which generat.The particles react with the oxygen,so they usually turn into green.😃

However,the aurora of large-scale frequently turns into red,and the ionosphere is influenced with the aurora,and obstacle of electric wave happens.❄

Aurora generates almost every day,but it's at night when we can see the aurora.As to the southern hemisphere,if we want to see the aurora,it's limited to the Antarctic,so the Arctic is appropriate for us to see the auror.😃