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.
NETFILE is an electronic tax-filing service that allows you to send your individual income tax and benefit return directly to the Canada Revenue Agency (CRA) using the Internet and a NETFILE-certified software product. It streamlines the tax-filing process and offers the following benefits: 1  It is secure and confidential. 2  File your returns directly from one of the NETFILE-certified products available using the NETFILE webservice. 3  No more need to upload your â.taxâ file.