The Science Behind Footballs First Down Line

If youve watch American football on television, you may have wondered how they make that yellow first down line look like its actually down on the field. We re conducting a survey of our viewers If you have time, please give us feedback: Hosted by: Olivia Gordon SciShow has a spinoff podcast It s called SciShow Tangents. Check it out at Support SciShow by becoming a patron on Patreon: Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D. A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark TerrioCameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz Looking for SciShow elsewhere on the internet Facebook: Twitter: Tumblr: Instagram: Sources: Images: