男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

您現在的位置: Language Tips> Easy English> Odd Question  
 





 
為什么熒光棒會發光?
[ 2006-09-15 11:09 ]

不知道大家有沒有玩過熒光棒。在黑暗中,熒光棒一閃一閃的,發出各種各樣的光。那么,你知道熒光棒是怎么發光的嗎?就讓下面這篇短文告訴你吧!

A phenomenon namedphosphorescenceis responsible for the light most glow-in-the-dark itemsemit.

Phosphorescence occurs when light absorbed by an object is slowly released and can be observed even after the light is removed. If not tampered with, the light the object emits is dim, and is always pale blue in color.

Chemists had a bright idea to spark interest in this phenomenon and to make it visually stimulating. They discovered that when they mixedfluorescentdye with the phosphorescent material, the object emitted a glowing, brighter green, or sometimes red, light.

The reason for this transformation is that fluorescent compounds absorb the light and rapidly emit it, giving the compounds a glowing appearance. This phenomenon occurs only in the constant presence of the original light source.

The phosphorescent material absorbs the light, and slowly emits a pale blue light, that in turn is absorbed by fluorescent dye. The light now emitted is green or red light, depending on the type of dye used.

The most commonly used phosphorescent material iszincsulfidemixed with copper, and the green fluorescent dye most likely is sodium fluorescein. The most likely source of red fluorescent dye isrhodamine. Paired together, the phosphorescent material and the fluorescent material produce a ghostly, glowing green or red light, and hours of enjoyment for young and for old alike.

phosphorescence: 磷光

emit: 放射、發出

fluorescent: 熒光的

zinc: 鋅

sulfide: 硫化物

rhodamine:玫瑰精,若丹明(一種紅色染料)

(英語點津 Annabel 編輯)

 
 
相關文章 Related Stories
 
 
 

本頻道最新推薦

     
  為什么下雪時天氣暖
  You are the smartest fish I've ever seen!
  Dog burger
  為什么老了脾氣好
  飛蛾為什么撲火

論壇熱貼

     
  開個題目大家扯:hotel & restaurant
  追求某人
  請教工商年檢如何翻譯
  How to translate “中國老字號”into English?
  "港股直通車"怎么翻譯?
  兩免一補怎么說?




主站蜘蛛池模板: 信宜市| 华亭县| 通州区| 湘潭县| 巴楚县| 金秀| 新邵县| 梅州市| 碌曲县| 增城市| 简阳市| 保亭| 龙胜| 桓仁| 徐汇区| 商丘市| 绿春县| 黑水县| 夏邑县| 东至县| 南昌市| 辽阳市| 宁波市| 广宗县| 东丰县| 崇文区| 噶尔县| 建始县| 宁乡县| 枣强县| 阳原县| 昌都县| 丰城市| 淮安市| 栾城县| 娱乐| 尖扎县| 新源县| 三台县| 云浮市| 渑池县|