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.
Scroll down for video. World record holder: Texas Longhorn bull JR, who lives in Queensland, Australia, has horns that measure an incredible 9ft 1in. Instead, he is part of the largest herd of Texas Longhorns in Australia, roaming around the 1,100acre Leahton Park estate in Queensland. He has claimed the Guinness World Record from a bull in Ohio called Shadow Jubilee.