2 Dynamic Evolution 



and it exists in matter by virtue of such 

 motion. Hence all motion involves energy. 

 The expenditure of energy is represented by 

 equal work performed, and work performed is 

 represented by equal energy expended. Work 

 and energy are often used synonymously, 

 but work is in fact the act of transferring 

 energy from one body to another. The fact 

 of such transference is made evident by the 

 changed relationship of bodies to each other. 

 Because energy performs work equal to itself, 

 it is commonly denned as "stored work." 

 Matter is inert. It is the " vehicle of energy," 

 but does nothing of itself. The distribution 

 of matter affects the distribution of energy, 

 but all changes, motions, and transformations 

 of matter are the effects of energy acting on 

 or through matter. 



Structure is matter in an organized form. 

 It involves everything from the arrangement 

 of atoms in a molecule to the bony, muscular, 

 and nervous systems of an animal. A bridge 

 is a structure designed solely to resist strains. 

 A machine is a structure which goes through 



