云室(cloud chamber)是显示能导致电离的粒子径迹的装置,早期的核辐射探测器,也是最早的带电粒子探测器,由C.T.R.威尔逊1896年提出的,故称威尔逊云室。
一块铝板横放在云室中,显然有粒子穿过铅板。
A lead plate crosses the chamber and evidently the particle has passed through it.
在一个改进后的云室里,研究人员们正在重塑地球的大气层。
In an updated version of a cloud chamber the researchers are recreating the Earth's atmosphere.
接着,关闭电场后,使真实的宇宙射线在云室中渗透一会。
Next, the field is switched off, allowing actual cosmic rays to permeate the chamber for a while.
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