Ultraviolet quickly than violet light itself. He called them "oxidizing rays" to emphasize chemical reactivity and to distinguish them from "heat rays", discovered the previous year at the other end of the visible spectrum. The simpler term "chemical rays" was adopted shortly thereafter, and it remained popular throughout the 19th century, although there were those who held that these were an entirely different sort of radiation from light (notably John William Draper, who named them "tithonic rays"). The terms chemical rays and heat rays were eventually dropped in favor of ultraviolet and infrared radiation, respectively. In 1878 the sterilizing effect of
Invisible Woman Invisible Woman The Invisible Woman (Susan "Sue" Storm-Richards), previously known as the Invisible Girl, is a fictional superheroine appearing in American comic books published by Marvel Comics. The character is a founding member of the Fantastic Four and was the first female superhero created by Marvel during the Silver Age of Comics. Sue Richards receives her powers by being exposed to a cosmic storm. Her primary power deals with light waves, allowing her to render herself and others invisible. She can also project powerful fields of invisible psionic energy which she uses for a variety of offensive and defensive effects.