The light-emitting semiconductor material determines the LED's color, so the number of colors is infinite. As indicated by its full name â Light Emitting Diode â an LED is a diode that emits light. A diode is a device that allows current to flow in only one direction. Almost any two conductive materials will form a diode when placed in contact with each other â with a single p-n semiconductor junction between them.
For other uses, see Texas Longhorn (disambiguation) and Longhorn (disambiguation). The Texas Longhorn is a breed of cattle known for its characteristic horns, which can extend to over 1.8 m (5.9 ft) tip to tip for bulls, and 2.1 m (6.9 ft) tip to tip for steers and exceptional cows.
Beginning in 1893, the Texas Longhorns football program is one of the most highly regarded and historic programs of all time. From 1937 to 1946 the team was led by Hall of Fame coach Dana X. Bible, and then from 1957 to 1976 the team was led by Hall of Fame coach Darrell K Royal, who won three national championships.