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 Red/Superman Blue Superman Red/Superman Blue Superman Red/Superman Blue refers to two different comic book storylines published by DC Comics featuring Superman. The original Superman-Red/Superman-Blue tale is an "Imaginary Story" that first appeared in "Superman" #162 (July 1963). The script was written by Leo Dorfman, with art by Curt Swan. In the story, Superman is compelled to finish a list of unaccomplished goals, including the enlargement of the Bottle City of Kandor and eliminating crime and evil from Earth. In order to accomplish these goals, Superman invents a machine, powered by various types of kryptonite, that will increase his intelligence. The machine works,