日晕也叫圆虹,一种大气光学现象,是日光通过卷层云时,受到冰晶的折射或反射而形成的。当光线射入卷层云中的冰晶后,经过两次折射,分散成不同方向的各色光。有卷层云时,天空中会飘浮着无数冰晶,在太阳周围同一圈上的冰晶,都能将同一种颜色的光折射到人的眼睛里形成内红外紫的晕环,(实际并没有)天空中有冰晶组成的卷层云时,往往在太阳周围出现一个或两个以上以太阳为中心、内红外紫的彩色光环,有时还会出现很多彩色或白色的光点和光弧,这些光环、光点和光弧统称为冰晕。
日晕多出现在春夏季节,民间有“日晕三更雨,月晕午时风”的谚语,其意思就是若出现日晕的话,夜半三更将有雨,若出现月晕,则次日中午会刮风。日晕在一定程度上可以成为天气变化的一种前兆,出现日晕天气有可能转阴或下雨。
日晕出现时不要长时间用肉眼观看日晕,以免灼伤眼睛。天气要下雨时,往往会在高空中出现象鸟类羽毛般的卷云,接着在卷云的下面6千米左右空中出现含雨的卷层云。由于气温低,云中的水滴变成六棱柱状的小冰晶。太阳光能穿过云层即在小冰晶上发生折射,看上去在太阳的周围出现一个圆圈,由内而外呈光谱色,这就是日晕。
晕(Halo, nimbus, icebow, Gloriole),是由于悬浮在大气中的冰晶把太阳光或月光折射或反射而形成的光学现象。当光线射入卷层云中的冰晶后,经过两次折射,分散成不同方向的各色光。有卷层云时,天空中会飘浮着无数冰晶,在太阳周围同一圈上的冰晶,都能将同一种颜色的光折射到我们的眼睛里形成内红外紫的晕环。天空中有冰晶组成的卷层云时,往往在太阳周围出现一个或两个以上以太阳为中心、内红外紫的彩色光环,有时还会出现很多彩色或白色的光点和光弧,这些光环、光点和光弧统称为冰晕晕。
晕通常呈环状或弧状,有红、橙、黄、绿、蓝、靛、紫七种颜色。由太阳照射冰晶反射至人类眼睛称为“日晕”,而月球照射冰晶反射至人类眼睛则称为“月晕”。 大气中的冰晶通常是由卷状云带来,当太阳光射入冰晶时,则反射于人类眼睛,产生环状或弧状的卷圈,通常为内圈红光,而外圈为紫光。
希望我能帮助你解疑释惑。
想要问别人是什么时候出生的,用英文怎么说?下面是我给大家整理的你什么时候出生的英文,供大家参阅!
你什么时候出生的英文When were you born?
What is your birth day?
At what time of day were you born?
出生的英语例句1. The birth of a live healthy baby is a truly blessed event.
一个健康活泼的婴儿的出生真是一件可喜的事情。
2. He was born and grew up in the Flatbush neighbourhood of Brooklyn.
他出生在布鲁克林的弗拉特布什一带,并在那儿长大成人。
3. She was born in the middle of a rain storm.
她出生在一场暴风雨中。
4. Almost 80 percent of the state's residents were born elsewhere.
该州居民中几乎有80%出生在异地。
5. Many children are now born into or raised in one-parent families.
现在很多孩子在单亲家庭中出生或成长。
6. She was born in Austria on March 6, 1920.
她于1920年3月6日出生在奥地利。
7. Swaddle your newborn baby so that she feels secure.
把你刚出生的孩子用襁褓包裹住,这样她会有安全感。
8. When Michael was born I was on cloud nine.
迈克尔出生的时候,我都乐得找不着北了。
9. It was the birth of his grandchildren which gave him greatest pleasure.
孙子孙女的出生给他带来了极大的快乐。
10. He's American-bred, with a sort of Irish background somewhere along the line.
他出生在美国,家族的血统里有一部分爱尔兰血统。
11. The next letter announced the birth of another boy.
下一封信通知又一个男孩出生了。
12. She was born Jenny Harvey on June 11, 1946.
她在1946年6月11号出生,取名叫珍妮·哈维。
13. Stan Laurel was born at number 3, Argyll Street.
斯坦·劳雷尔出生在阿盖尔街3号。
14. Two thousand grey seal pups are born there every autumn.
那里每年秋天有2,000头灰色小海豹出生。
15. Doctors say the disease is probably inherited but not detectable at birth.
医生说该疾病可能是遗传而来,但在出生时无法查出。
出生的英文作文My birthday is on xxxx.I invited my friends to my birthday party.My parents bought lots of food and drinks for me.My friends bought many presents for me,I liked them very much.
There was a big bithday cake with 你的岁数 candles on it.My friends all sat around the cake.I
made a silent wish,and then I blew the candles out in one breath .We danced ,sang many songs and played games at the party.Everyone has a good time.We all very happy.
出生的英文作文2I was born in a small village,so that my childhood mostly spent in countryside.Althought the condistions were not so good,my childhood was happy and interesting.At that time,we didn't have much money to buy toies.Therefore,almost all of my toies were made by myselfe or my mates.Sometimes,my father would make some toies for me.Besides,because my parents were busy with their farmwork,I usually helped them do some work after school,especially the housework.I wanted to relieve some burden of them.I was happy in my childhood.Even now,I usually recall the beautiful memories of my childhood.
出生的英文作文3Schedule of my one day's life
According to yesterday's arrangment, I need go to the centre Park to meet one customer first, after breakfast. That maybe will take me two or three hours there. after that, back to the company. Having luch, and having a short break at noon. In the afternoon, work as usuall and attend a meeting at 4 o'clock. before finish one day work, make a small sumarry what i have done today and what things i need to do next day.
after work, it's my spare time. sometimes, have dinner with my famliy, or go to pub with my friends. or perhaps, Watch Tv at home after dinner. or., who knows, ...
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