In 1873, Willoughby Smith discovered photoconductivity in selenium, a breakthrough that laid the foundation for the photoelectric effect. This discovery was crucial for the development of various technologies, including solar cells and photodetectors. Smith's work in photoconductivity significantly advanced the field of electronics and paved the way for future innovations in light-sensitive devices.

The development of selenium photoconductivity in 1873 foreshadowed advancements in photography and film, influencing visual and imagist poetry. Poets like Ezra Pound and H.D. began to experiment with imagery that captured fleeting moments and sensory experiences.