Blank greetings card with envelope featuring:

Sir William Crookes ('Men of the Day. No. 879. "ubi Crookes ibi lux"') NPG D45171

© National Portrait Gallery, London

by Sir Leslie Ward

A chemist and physicist noted for his discovery of the element thallium and for his cathode-ray studies, fundamental in the development of atomic physics. Crookes studied at the Royal College of Chemistry, London. Soon after graduating he inherited a large fortune from his father after which he devoted himself entirely to scientific work at his private laboratory in London. His researches on electrical discharges through a rarefied gas led him to observe the dark space around the cathode, now called the Crookes dark space. In... more

Card size: 125mm x 175mm

Images are printed in their original proportions, within a white border.