hard and accurate surface

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• Hard science fiction — is a category of science fiction characterized by an emphasis on scientific or technical detail, or on scientific accuracy, or on both.[1][2] The term was first used in print in 1957 by P. Schuyler Miller in a review of John W. Campbell, Jr. s… …   Wikipedia

• Hard disk failure — In computing, a hard disk failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A disk failure may occur in the course of normal operation, or due to an external… …   Wikipedia

• rocket and missile system — ▪ weapons system Introduction       any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion.       Rocket is a general term used broadly to describe a variety of jet propelled missiles… …   Universalium

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …   Universalium

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• soap and detergent — ▪ chemical compound Introduction       substances that, when dissolved in water, possess the ability to remove dirt (detergent) from surfaces such as the human skin, textiles, and other solids. The seemingly simple process of cleaning a soiled… …   Universalium

• Defence Research and Development Organisation — Sanskrit: बलस्य मूलं विज्ञानम् Strength s Origin is in Science [1] Agency overvi …   Wikipedia

• Speeds and feeds — A line drawing showing some basic concepts of speeds and feeds in the context of lathe work. The angular velocity of the workpiece (rev/min) is called the spindle speed by machinists. Its tangential linear equivalent at the tool cutter interface… …   Wikipedia

• Bicycle and motorcycle dynamics — A computer generated, simplified model of bike and rider demonstrating an uncontrolled right turn. An …   Wikipedia

• Tool and Cutter grinder — A tool and cutter grinder is used to sharpen milling cutters and tool bits along with a host of other cutting tools.It is an extremely versatile machine used to perform a variety of grinding operations, surface, cylindrical, or for the grinding… …   Wikipedia