The electric wave  [videorecording] 

 - [s.l :  s.n.],  199-? 
 - 1 videocassette (30 min.) :  sd. col. ;  1/2 in. 
<br/><br/> Title on container  H60980 
<br/><br/> This program illustrates how waves transfer energy, but not matter, from one point to another. The program also concludes by explaining how electric waves are produced 
<br/><br/><br/>VHS format 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric waves