Freebase(0.00 / 0 votes)Rate this definition: Derived demand is a term in economics, where demand for a factor of production or intermediate good occurs as a result of the demand for another intermediate or final good.
10 best places to see this summerâs solar eclipse. On August 21st, a total solar eclipse will be visible to mainland America. Find out why it is drawing giddy excitement from the public, as well as astronomy gurus. On Aug. 21, a swath of the USA will plunge into darkness during a continent-wide total solar eclipse.
A total eclipse can only be seen in the narrow corridor known as the path of totality --- or the inner umbral shadow.. The area where the sun's rays are only partially obscured is called the penumbra.. Today the moon's shadow falls across parts of North Africa, Europe and the Middle East.