The alignment chart, in its simplest form, is comprised of a series of three lines, each representing a quantity, so scaled and arranged that a straight line intersecting all of these lines intersects them at values for each respective quantity which will satisfy the equation of the relations of the quantities. In the simplest form, there are but three variables, one the function of the other two. In complicated equations, the alignment charts take on more complex forms. Constants, either as coefficients or exponents to any of the variables, affect only the arrangement of the lines and the values scaled...
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