This film includes animated sequences. digital.library.unt.edu/ark:/67531/metadc13627/ Coaxial and Microwave Miracles This film discusses technologies such as coaxial cables and microwaves and how they are used in the field of communication technology. digital.library.unt.edu/ark:/67531/metadc13629/ Backfire This story is based upon the actual classroom experiences of Thomas J. Shelly, teacher of