Tale of two forces,  .m4v format
 
The tale of two forces, gravitation and electromagnetism.  These are our two main objectives for physical science study this summer.
 
Tuesday, June 26, 2007
 
 
 
 
 
 
 
.m4v
Tale of two forces: gravitation and electromagnetism.  
REVISED for enhanced audio, June 26, 8 PM.