Friction friction and wear in so-called self-lubricating materials. Fluid friction occurs between fluid layers that are moving relative to each other. This internal resistance to flow is named "viscosity". In everyday terms, the viscosity of a fluid is described as its "thickness". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. The less viscous the fluid, the greater its ease of deformation or movement. All real fluids (except superfluids) offer some resistance to shearing and therefore are viscous. For teaching and explanatory purposes it is helpful to use the concept of an inviscid fluid
What to the Slave Is the Fourth of July? of their country and their religion and how they rejoice in the name of freedom and liberty and yet they do not offer those things to millions of their country's residents. It is said that America is built on the idea of liberty and freedom, but Douglass tells his audience that more than anything, it is built on inconsistencies that have been overlooked for so long they appear to be truths. According to Douglass, these inconsistencies have made the United States the object of mockery and often contempt. To prove evidence of these inconsistencies, as one historian noted, during the