Understanding the Inventions That Changed the World.  Episode 18,  Batteries and Electric Generators. 

 - 1 online resource (streaming video file) (27 minutes):  digital, .flv file, sound 
<br/><br/> Title from title frames.  Film  In Process Record. 
<br/><br/>W. Bernard Carlson 
<br/><br/> Originally produced by The Great Courses in 2013. 
<br/><br/> How do you produce electricity? And once it's produced, how do batteries and generators deliver it? Take a fascinating look at where these fundamental inventions came from and how they work. You'll study the relationship between electricity and magnetism, the difference between direct and alternating currents, and the role of science and experimentation. 
<br/><br/><br/>Mode of access: World Wide Web. 
<br/><br/><br/>In English 
<br/><br/><label>Publisher. No.: </label>6771390  Kanopy 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History, Ancient.<br/>Engineering.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Education films.