solar energy is... the sun's rays (solar radiation) that hit the earth is the definition of solar energy. Two categories passive and active. Passive: Passive solar produces heat and provides lighting for structures.
Retirement Insurance Benefits. Retirement Insurance Benefits (abbreviated RIB) or old-age insurance benefits are a form of social insurance payments made by the U.S. Social Security Administration paid based upon the attainment of old age (62 or older).
Rib & Baby Rib. rib [rihb]: Rib knit is a double-knit fabric that knits the fabric in vertical ridged pattern called ribbing and highly stretched in crosswise direction.