You got pascal, bar, psi, atm, torr, and all kinds of column heights of mercury, water and whatnot.
Why do we need all these different units to express pressure?
In: Physics
Different units of pressure exist because they evolved from various fields and historical contexts. Scientists, engineers, and industries developed their own units based on what was practical for their work. For example, Pascals are common in science, psi is used in engineering and tires, and atmospheres are handy for comparing to Earth’s air pressure. These units persist because they are deeply ingrained in each field’s standards and practices, making them convenient for specific applications
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