âºâº Definition: Second. A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.710-7) of a circle.
The resistance of a liquid to flowing is its viscosity.   Viscosity is a property arising from friction between  neighboring particles in a fluid that are moving at dif â¦ ferent  velocities. In liquids, it could be considered the thickness.
made up of laminae or layers; pertaining to a lamina. laminar flow hood a device that separates the air flowing through it into layers, cleansing the air of microorganisms. It is used to protect patients with compromised immune systems and is also used in operating rooms and pharmacies to provide a clean environment.