This lesson builds upon the previous two (Newton's Second Law and the First Law of Thermodynamics) by explaining that conservation of energy is not perfectly observed, in that energy is lost as it is transferred from...

Ben Crowell, a teacher at Fullerton College, provides great, free physics and astronomy educational resources at this website. The Physics link offers three well written, downloadable introductory physics textbooks --...

Developed by Professor Thomas A. Moore of Pomona College, the Six Ideas That Shaped Physics textbook was designed to help students gain a contemporary perspective on the discipline, along with giving them the ability to...