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.
Solar Eclipses can only occur at the moment of the New Moon; Lunar Eclipses can only occur at the moment of the Full Moon. You can see eclipses in a chart by simply looking at the Moonâs Nodes. Whenever there is a Full Moon or a New Moon within 18Â°31â of one of the Nodes, it is an eclipse.