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.
Biofeedback is an umbrella term for various types of treatments that teach psychophysiological self-regulation. There are many different forms of biofeedback, including electromyography (EMG), temperature, heart-rate variability (HRV), and electrodermal response (EDR).ne the principles of biofeedback is that there is reciprocal relationship between the brain and body. This means that not only does the brain control the body, but the body controls the brain. The brain constantly monitors the body for changes. Biofeedback is also grounded in the behavioral sciences.