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词汇 phosphoroscope
分类 英语词汇 英语翻译词典
释义

phosphoroscope /fɒs'fɔːrəskəʊp/

英汉-汉英词典
n. 磷光计,磷光镜
词组 | 习惯用语
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  • schizophrenia n. 精神分裂症
  • phosphoresce v. 发出磷光
  • phosphorous n. 磷光 adj. 发磷光的;〈化〉磷的;三价磷的;含磷的
  • phosphoric adj. 磷的(尤指含五价磷的),含磷的
phosphoroscope n. 磷光计,磷光镜

网络短语:
phosphorimeter phosphoroscope 磷光计
rotating can phosphoroscope 转筒式磷光计
英语百科

Phosphoroscope

The Becquerel phosphoroscope (1873-1874)

A phosphoroscope is piece of experimental equipment devised in 1857 by physicist A. E. Becquerel to measure how long it takes a phosphorescent material to stop glowing after it has been excited.

It consists of two rotating disks with holes in them. The holes are placed on each disk at equal angled radial lines and a given distance from the centre but they do not align with each other. A sample of phosphorescent material is placed in between the two disks. Light coming in through a hole in one of the discs excites the phosphorescent material which then emits light for a short amount of time. The disks are then rotated and by changing their speed the length of time the material glows can be determined.

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