The Mechanical Action of Light 2

Sir William Crookes, OM, was a British chemist and physicist. He worked on spectroscopy. He was the founder of vacuum tubes, inventing the Crookes tube, which was made in 1875. Crookes was the inventor of the radiometer, which today is made and sold as a novelty item.
The experiment that was described in this book showed that it may be possible, by proper arrangements, to realize a machine which will furnish a continuous current of electricity for as long as may be desired. Read the book to know more about it!