Ah, yes, the ubiquitous number 0 (Zero). This is wonderful number for engineers. We will even explain why without having to resort to zero’s intricate value in its use in base ten, and how zero has been such a great help in weights and measurements – a great help if one uses the metric system, otherwise you are on your own.

Zero is used in so many applications of engineering. Engineers set numerous equations to zero to solve for them. Most notably, if an object or point is in equilibrium, then all the forces acting on it will add up to, you guessed it, Zero. This will be the case for all three directions in a space into which the forces are broken down (x, y, and z). So Zero is essential for analyzing any static object or system. If one wants to make sure air pressure is maintained in a building, then the amount pumped and the amount taken out must be equal, or, put it another way, the sum of the in and out amounts must equal Zero. To maintain a temperature in room or building, the heat added plus the heat lost (which will be negative) adds up to Zero.

The other numbers may make fun of Zero, for being a nothing, a loser, a, well, a Zero. But to an engineer, it is wonderful number and one to be respected.

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