Superman (1939). Certain materials such as lead can block his X-ray vision. Superman can project beams of heat from his eyes which are hot enough to melt steel. He first used this power in "Superman" #59 (1949) by applying his X-ray vision at its highest intensity. In later stories, this ability is simply called "heat vision". Superman can hear sounds that are too faint for a human to hear, and at frequencies outside the human hearing range. This ability is introduced in "Action Comics" #11 (1939). "Action Comics" #1 (1938) explained that Superman's strength was common to all Kryptonians because they
Superman as editor of the Superman comics. In the earlier decades of Superman comics, artists were expected to conform to a certain "house style". Joe Shuster defined the aesthetic style of Superman in the 1940s. After Shuster left National, Wayne Boring succeeded him as the principal artist on Superman comic books. He redrew Superman taller and more detailed. Around 1955, Curt Swan in turn succeeded Boring. The 1980s saw a boom in the diversity of comic book art and now there is no single "house style" in Superman comics. The first adaptation of Superman beyond comic books was a radio show,