Controls for maintaining this condition, such as Gaster bumps, seek to prevent attachment-line contamination and T–S waves. Hoods or cabinets named for operating under this condition (-5[1])are used to prevent the contamination of sensitive samples. (-5[1])Tubular reactors operating under this condition (-5[1])allow for high control over the residence time of chemicals because a parabolic velocity profile will develop. (-5[2])When this condition (10[1])and (10[1])incompressibility hold, the pressure (10[1])drop goes as one over the fourth (-5[1])power of pipe radius by Poiseuille’s (10[1])(“pwah-ZUH-ee’s”) law. (10[3])Smooth airfoils are designed to induce this (10[1])condition, (10[1]-5[1])reducing (10[1])drag from eddies (10[1])and vortices. (10[3]-5[2])Poured (10[1])honey (10[1])exemplifies (-5[1])a flow with this condition, (10[2])which occurs at low Reynolds (10[1])number. (10[4]-5[1])For (-5[1])10 points, (10[1]-5[1])name this sheet-like (10[1])flow (10[1])in which parallel (10[1])layers (10[2])do not mix, unlike turbulent flow. (10[1])■END■ (10[10]0[1])