A Guide to Understanding Uses of the Density Formula
There are very few people who have never heard the word “density” before. If, for example, you’ve ever been a student in a science class, especially one that deals with physics or chemistry, the odds are very good that you have heard density mentioned more times than you would care to remember. 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.
To start, the density formula is the mass of an object divided by it’s volume. At this juncture, you might be thinking that you’ll never have a reason to work with density in your everyday existence, but this might actually not be 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.
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One of the most famous uses of the density formula involves buoyancy. Legend goes that Archimedes of Syracuse was called upon to determine if King Hiero II’s new crown contained all of the gold he had given the goldsmith; he apparently thought the smith might have stolen some for his own purposes. The crux of the tale is that Archimedes devised that the volume of the crown could be evaluated by the mass of the water it displaced while sitting in a tub. The volume, in turn, was used to determine the density, as per the density formula.
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The Seasonal Stratification of Lakes Can Be Studied
Water has a density maximum of 4 degrees Celsius. In all but the very shallowest lakes, the water has stratified properties; this refers to the fact that the most dense water goes to the floor and rarely, if ever, mixes with the less-dense water that can be found at the surface. When fall and winter come around and lake waters cool, the dense water that was at the bottom during the spring and summer is displaced, ultimately restoring nutrients and making sure the lake is ready for warm weather next year.
Lava Lamps Rely on Density
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.