To summarize, science becomes knowledge by publication of research results. It then may become more general knowledge as writers of textbooks pick and choose what to put in their texts, and as professors and teachers then decide what to stress from those textbooks.
The Hughes H-4 Hercules (also known as the  Spruce Goose ; registration NX37602) is a prototype heavy strategic airlift military transport aircraft designed and built by the Hughes Aircraft Company.oward Hughes was called to testify before the Senate War Investigating Committee in 1947 over the use of government funds for the aircraft. During a Senate hearing on August 6, 1947 (the first of a series of appearances), Hughes said: The Hercules was a monumental undertaking.
Boeing 737-500. The Boeing 737-500 is the smallest model in the Southwest fleet, both in terms of the size of the plane and the seating available on it. Southwest uses 25 737-500 airplanes, and while it looks similar to the 300 model in terms of design, the 500 features roughly 10 percent less seating.