Science is concerned, among other things, with relationships between quantities. Sometimes the relationship is only vaguely stated: Is A bigger than B? Other times it can be precisely formulated: The gravitational force between two bodies is proportional to the product of their masses, and decreases as the square of the distance between them. Statements of the latter kind can best be described in the language of mathematics, but the language of mathematics has few native speakers. There is often no choice but to use it whether we like it or not, but sometimes the relationship embodied in an equation can be understood more easily when represented by a picture. Indeed at times a picture is better than an equation, even for the mathematically minded.
KeywordsParticulate Concentration Sulfur Dioxide United States Population Simple Pendulum Hand Calculator
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