![]() ![]() Viscosity is a very important quality of liquids that scientists, engineers, and even doctors are frequently trying to measure and change. Likewise, in highly viscous liquids (those with high internal friction), the resistance to flow is high. If, for example, you try to ride your bike with the hand brakes on (a form of friction), it is difficult to roll the bike forward. ![]() The viscosity, or resistance to flow, goes way down as the temperature goes up.Īs a measure of a liquid's resistance to flow, viscosity can be thought of as friction inside the liquid. If you set the honey bear in a pan of warm water for a few minutes and try again, what happens? One little squeeze and honey comes gushing out all over your toast. As the temperature goes down, the viscosity, or resistance to flow, goes way up and you can squeeze and squeeze all you want, but very little honey comes out. On a cold winter morning, have you ever tried to squeeze some honey out of the honey bear onto your toast? It is pretty tough, huh? Honey is one of those liquids that is very sensitive to temperature. ![]()
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