What Is Flux?
Here is something so mysterious; it may be something to blow your sox off. Don't worry. We don't dramatize it anymore. Let's learn a bit more to figure it out. Flux is a mysterious phenomenon that has never been explained, but neither have scientists given up the search. Flux is a natural phenomenon that has become ubiquitous in physics, mathematics, and technology. While we still need to precisely understand what it is and how it works, we have many examples of flux at work. From heat being carried around inside your toaster to electricity flowing through wires in your house, flux is always with us, even on your fingertips when you rub them together! In physics, a flux is a vector field that describes the spatial variation of a quantity. The word comes from the Latin "Fluxus", which means flow and is first introduced by Isaac Newton into differential calculus as "fluxion". Flux is the flow of electromagnetic waves through space. Flux is the flow rate of a property per unit area in transport phenomena such as heat transfer, fluid dynamics and mass transfer. Flux is considered the "amount of substance or energy that passes through a given surface per unit time." For example, the amount of water flowing per square area of a river and the amount of light that hits the spot per second are considered types of flux. Flux is the amount of air that is flowing through a tube. You can think of it by measuring the wind speed coming out of an opening versus how fast it goes when it goes through another entrance. So if the wind speed is better and the area remains constant, the flow must have increased. If you need to increase the amount of air going through one outlet compared to another, decrease your opening size and increase its area.
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