In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate, (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes VÌ). The SI unit is m3/s (cubic metres per second).
The symptoms of the disease were black and purple spots on the body. The spots soon began to become enlarged and swollen. The victims were taken captive by death in about two to seven days. The plague lasted for four years, but it still remained a recurrent fear until the seventeenth century.
19 Jul 2016. In Medieval England, the Black Death was to kill 1.5 million people out of an estimated total of 4 million people between 1348 and 1350. No medical knowledge existed in Medieval England to cope with the disease. After 1350, it was to strike England another six times by the end of the century.