Concrete Canoe. The Greek polymath Archimedes is said to have solved the mystery of buoyancy in a bathtub. Even if the story is apocryphal, his principle isn't: If an object weighs less than the water it displaces, it won't sink. Even concrete can float. Materials scientist Joseph-Louis Lambot built a concrete dinghy featured in the 1855 World's Fair.
Definition of BIOFILTER. : a filter bed in which sewage is subjected to the action of microorganisms that assist in decomposing it. ADVERTISEMENT. 2bi- + filter.rigin of BIOFILTER. 2bi- + filter. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.
A bio graphy (or bio) is a book that tells all about the events in someoneâs âlife,â written by an author other than the subject of the âlifeâ history. An auto bio graphy, on the other hand, is a history of a personâs âlifeâ written by that person. The adjective aero bi c refers to the oxygen a âlifeâ form requires in order to âlive.â Aero bi cs are simply exercises which cause âlivingâ organisms, such as yourself, to breathe faster as your body consumes more oxygen.