In 1897, the British physicist J.J. Thomson discovered the electron at the Cavendish Laboratory in Cambridge, England. By measuring the deflection of cathode rays, streams of particles produced by electrical discharge in vacuum tubes, in magnetic and electric fields, Thomson determined that these rays consisted of subatomic particles with a negative electric charge and a mass far smaller than any atom. The electron was the first subatomic particle ever identified, fundamentally changing the understanding of atomic structure and the electrical nature of matter.

The discovery of the electron shattered the ancient idea that atoms were indivisible, introducing a new vision of matter as mostly empty space animated by tiny electrical particles. This radical reconception of physical reality profoundly influenced modernist literature's break with Victorian materialism, paralleling the way modernist poets broke with traditional forms to explore the charged spaces between words. T.S. Eliot's fragmented landscapes and Ezra Pound's ideogrammatic method both reflect a world in which solid reality has dissolved into electrical forces and empty space, a direct cultural consequence of Thomson's Cambridge discovery.