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A Guide to Understanding Uses of the Density Formula Just about everyone is familiar with the word “density.” If, for example, you have ever been enrolled in a chemistry class or a physics class, there’s no doubt that the instructor talked about density on more than one occasion as the course progressed. There is a good chance, though, that you never fully understood what density is or what the formula of density is. Lucky for you, guides like this one can help you. The density formula, to start with, is an object’s mass divided by it’s volume. By now you might be thinking that there’s no way you’ll ever need to use density in your day-to-day life, but this isn’t necessarily true. There are, as you will find out as you continue reading this guide, numerous reasons to put the formula of density to use in everyday life. While you might not use all of these applications in your personal life, you will undoubtedly run across some of them on a regularly basis or, at the very least, periodically. Understanding Archimedes’ Principle
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One of the most famous uses of the density formula involves buoyancy. According to the story, Archimedes of Syracuse was asked to somehow determine if King Hiero II’s new golden crown contained all of the precious metal he had set aside for his goldsmith; he allegedly believed the smith, might have been skimming off the top, so to speak. To make a long story short, Archimedes discovered that the crown’s volume could be figured by the mass of the water it displaced when it was put into a tub. The volume could then be inserted into the density formula and the problem solved.
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The Seasonal Stratification of Lakes Can Be Studied Water’s density maximum tops out at 4 degrees Celsius. In all but the most shallow lakes, the water is stratified; this means that the densest water is located at the bottom, having very little interaction with the less-dense water nearer the surface. When the chill of fall and winter come each year, cooling the temperature of lake waters, the dense water that had been at the bottom over the spring and summer is pushed towards the top, restoring nutrients and making sure the lake is prepped for the upcoming year. Density is a Key Component of Lava Lamps Lava lamps, or fluid motion lamps, became immensely popular in the 1970s and are still popular in some circles today. The formula of density is a major player in how these sorts of lamps operate. The oil that is used to fill the lamps is slightly denser than the water, causing blobs of water to move up and down when the oil is heated via the use of a lightbulb.