Variations in the system hardware are hidden by the BIOS from programs that use BIOS services instead of directly accessing the hardware. MS-DOS (PC DOS), which was the dominant PC operating system from the early 1980s until the mid 1990s, relied on BIOS services for disk, keyboard, and text display functions.
Definition of efflorescence. 1  1a : the action or process of developing and unfolding as if coming into flower : blossoming periods of â¦ intellectual and artistic efflorescence â Julian Huxleyb : an instance of such developmentc : fullness of manifestation : culmination. 2  2 : the period or state of flowering.
Diffusion is faster at higher temperatures because the gas molecules have greater kinetic energy. Effusion refers to the movement of gas particles through a small hole. Graham's Law states that the effusion rate of a gas is inversely proportional to the square root of the mass of its particles. diffusion movement of particles from an area of high concentration to one of low concentration.