In the late 1700s, Italian scientist Luigi Galvani stumbled across one of the most important discoveries of all time. He found that frog legs would contract when some of the muscles and nerves were connected – even when the frog was dead! Galvani attributed this phenomenon to the idea that animal and human brains produce [...]
Posted on May 15, 2012 by Dr. Joel Bryan
Posted on October 1, 2005 by Chris ChiaverinaChemistry is all about studying matter and how it changes. Fortunately many characteristics of matter are macroscopic, that is, we can directly observe them without the aid of any lens other than those in our own eyes. We can watch as matter is mixed or reacted and ultimately may be able to infer something about its deeper, more abstract structure.
Posted on February 1, 2002 by Arbor ScientificHands on activities including counting calories in the classroom with potato chips, show potential energy and the conservation of energy with a pendulum, similarities with generators and electric motors, Watts Up meter measurements, and sugar linked to strength.