Tag: science
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What is Refrigerator
Prior to the invention of refrigerators, food preservation imposed serious constraints. The best options were to suspend food in rivers, wells, or at the bottom of lakes, and absent these tactics, stable foods were heavily salted, spiced, pickled, or dried to prevent bacterial growth. With the industrial age, we began to understand thermodynamic cycles and—through…
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Knowledge, Experience, Creativity
Someday your teacher said, F = m.a where a is vector of acceleration and m is a mass. Or it must be P = ρgh, p = m.v, W = ΔE blah blah blah. They are called knowledge and since we know it, we should able to create something. For example, from the second Newton equation, we can know many…