Back in the Cavendish Lab in Cambridge he built an artificial cloud chamber, a simple device in which he could cool and moisten the air, creating a reasonable model of a cloud in laboratory conditions.

回到剑桥大学的卡文迪许实验室以后，他建起了一个人工云室，一种简单的装置，他在里面可以冷却和湿润空气，在实验室现有的条件下创建一个说得过去的云层模型。