(cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin
a person's social heritage: previous experience or training
information that is essential to understanding a situation or problem
relatively unimportant or inconspicuous accompanying situation
extraneous signals that can be confused with the phenomenon to be observed or measured
the state of the environment in which a situation exists
energy that is radiated or transmitted in the form of rays or waves or particles
the act of spreading outward from a central source
inconceivably extended in space or time
