Virtual first down lines are used to indicate where play resumes in football -- but how do they work? Listen in as Marshall Brain explains how the technology superimposes a virtual line in this podcast on HowStuffWorks.com.
Aug 2009
Stuff You Can Hook Up to Your TV
<p>In this episode, the TechStuff guys discuss the past, present and future of home theater devices that hook up to your tv, from the VHS/Betamax format wars to the OnLive video game platform, in this podcast from HowStuffWorks.com.</p><p> </p> Learn more about your ad-choices at ... Show More
35m 8s