New perspectives in science of rock fragmentation.A considerable percentage of the world's electrical energy is used to fragment (1) In networking, one piece of a data packet that has been broken into smaller pieces in order to accommodate the maximum transmission unit (MTU) size of a network. See IP fragmentation. rock to liberate (Liberate Technologies, San Mateo, CA) A software company that specialized in the information appliance field. Formerly Network Computer, Inc. (NCI), a spin-off from Oracle in 1996, it changed its name in 1999. the valuable minerals in the pieces of ore. Of the energy put into a traditional ball mill, less than six per cent of the energy actually creates fragments. This is because the probability of a significant collision between the balls and pieces of ore is low. Contrary to popular belief, a piece of rock fails not because it is crushed, but when a shock wave is created in the piece of rock by a sharp blow. The shock wave effectively tears the rock apart under tension rather than compression. Studies have shown that the energy is much more efficiently used if a piece of rock is fired at a hard surface. Perhaps in the future miners will have a series of "cannons" firing rocks at a wall. Written by Brian H. Kaye, professor emeritus e·mer·i·tus adj. Retired but retaining an honorary title corresponding to that held immediately before retirement: a professor emeritus. n. pl. of physics at Laurentian University Laurentian University, main campus at Sudbury, Ont., Canada; bilingual, coeducational; founded 1960. Among its faculties are those in astronomy, commerce, computer science, education, engineering, law, mathematics, music, native studies, nursing, physics, and social . |
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