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Unformatted text preview: 1 Problem. Battery We will insist on the importance of units in engineering applications. Dimensions indicated by numbers depend on the corresponding units: 1 meter = 100 centimeter, but 1 does not equal 100. The number and the unit are inseparable, at least in principle! Writing 1 meter rather than 1 is called carrying the unit. As a general rule, units should be carried in all engineering computations. In working out equations, the units are treated as algebraic quantities. It is best to work out the equations in symbolic form. Each symbol is replaced by its number and unit only at the very end. In addition to being important for applications in the real world, keeping track of units is a powerful way to check that an answer is at least consistent with the expected outcome. Getting the units right does not guarantee that the answer is right, but getting them wrong is a clear indication of difficulty....
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This note was uploaded on 02/25/2009 for the course MATH 1910 taught by Professor Berman during the Fall '07 term at Cornell University (Engineering School).
- Fall '07