Viscosity is a term used to describe the measure of a fluids resistance to flow. The internal friction of a fluid in motion and it's unofficial "thickness" can also be described in terms of the viscosity of a particular fluid.
High viscosity fluids are able to resist motion because they have a molecular makeup that provides them with a high degree of internal friction. Low viscosity fluids will flow more easily because they are unable to resist deformation caused by shear stress or tensile stress. Gases also have a viscosity, but this property is harder to observe during ordinary circumstances.Learn More
The Trail of Tears is a term commonly used to describe the path that the Cherokee Native American tribe was forced to travel after being removed from its homelands by English settlers during 1838. Many Native Americans died due to starvation and disease during the relocation, which caused much distress among the Cherokee people.Full Answer >
In French, the word "nonpareil" means "without equal," so the term was meant to describe a candy that was better than the rest. Nonpareils were once only found in a white variety but colorful nonpareils soon followed.Full Answer >
While the use of the name "March Madness" in reference to American college basketball playoffs dates back to the 1980s, the term was originally used to describe the Illinois state high school basketball tournament. Though many people are familiar with the college playoffs under the March Madness name, this is actually one of several colloquial names for the NCAA basketball tournament.Full Answer >
"Upper middle class" is a term used to describe a socioeconomic class. There is no single fixed definition of what the term means, but it is generally used to describe the highest levels of salaried workers and their families, while remaining underneath the upper class.Full Answer >