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.
A Boeing 767-300ER in the fleet of British Airways. The Boeing 767 is a wide-bodied twin-aisle, twin-engine airliner. The aircraft is the most widely used aircraft on cross-Atlantic routes. The 767 first entered service in 1982 with United Air Lines. Boeing has delivered more than 1,000 767s that are flown by more than 80 operators around the world.