Retroreflectors; they\'re everywhere, and they cheat physics (sort of)

Road signage and other markings may be something you take for granted, but have you ever wondered how they can appear so brightly with just the output of your headlights? Find out how, and get a load of other trivia, in this video! Links! Geoff\'s and Steve\'s videos (respectively); https://www.youtube.com/watch?v=AtOKYoJUhlA https://www.youtube.com/watch?v=z5cR6EA2jGY My usual links; Technology Connextras (the second channel that stuff goes on sometimes): https://www.youtube.com/channel/UClRwC5Vc8HrB6vGx6Ti-lhA This channel is supported through viewer contribution on Patreon. Thanks to the generous support of people like you, Technology Connections has remained independent and possible. It\'s how I can make fun of products like these! If you\'d like to join the amazing people who\'ve pledged their support, check out the link below. Thank you for your consideration! https://www.patreon.com/technologyconnections And thank you to the following patrons! William Matthews, Fred Leckie, Kenneth Morenz, Andy , TritonZ , Greg Stearns, Robert L LaBelle, Chris Satterfield (Compgeke), Jerrod Putman, Cameron Benton, Samuli Suomi, Keith McCready, Jeffrey Glover, Marcus Langendorff, Hsin-Kuei Chen, David Anez, Josiah Keller, Todd Eichel, Conall Ó Maitiú, Struan Clark, Keeb , Alexander Karlsson, Tarrien , Jason Viterna, DrMoebyus , Chris Larsen, JH , Michael Romero, Aram Hăvărneanu, Jonathon Mah, Jonathan Polirer, Marc Versailles, Arthur Zalevsky, John Fruetel, Cupcake , Andrew Diamond, Cole Campbell, Christopher Beattie, Paul Bryan, Samuel Kirzner, Daniel Pritchard, Brandon Tomlinson, Eric Loewenthal, Jeremy Samuels, Malcolm Miles, David L Jones, Matthew Burket, Noah Corwin, Andrew Roland, Luke Whiting, Smith8154 , Lars Jacobsen, Michael Wehner, Tom Reid, Kenneth Siewers Møller, jacob kamphaus, Slysdexia , HurleyPotter, Tommy McCarthy, Andrew Bobulsky, On Ice Perspectives, Brian Wright, TheGreatCO , Petteri Hjort, Daniel DeLage, Nathan Obuchowski, Shaun Puzon, Bret Holmes, Vlycop , Lucas Beckmann, Casey Blackburn, Devon Hodgson, Zimpan , Filmmaker IQ, Jan Houben, Bren Ehnebuske, T.J. Zientek, Vernon , Ton Brands, Scott Wright, Kory Howard, rezonant , Thanasis Dimas, Adam Quartarolo, Marc Grondin, Hex , Craig Kollai, Daniel Barrera, Mark Stradling, Peter Sodke, Dee Dub, joseph , Kristian Scheibe, BigMcLargehuge510, Andrew Liendo, Nick , The Masterpiece, Sterling , Seanvdv , Chris Cody, Jason Portwood, Chad Fertig, M Shrimptoast, Joseph Houghtaling, Ben Tucci, Dave Stares, Josh Braun, Joe Johnson, Daniel Dugger, Christopher Lowell, Oleg , Michael Sacchi, Ali Elam, Dan Allen, Zhenbang Xiao, Jason Watson, Markus Towara, Barky doggo, Ectra , Martin Embeh, Reid Fishler, Daniel Meagher, Joel , Clemens , Bill Bates, Centronias , Dennis Walsh, Alex Warren, Paul Robins, CanyonMID , Les , Keenan Finucan, Ian Clanton-Thuon, Ryan Pratt, Paul Newton, Greg Golds, Theo Keeler, Tyler Alberico, Ben Ratner, Doug Davenport, Paul Sharp, Craig Brickey, Zidy , Brandon , Karl Kornel, Danila Fediashchin, Adam , Zach Rose, Patryk Majewski, Ryan Kamphuis, WB , AmbientCyan , Sam Calandra, Wolfgang Gschwendtner, Józef Sokołowski, Will Preston, Stuart Stanfield, Christopher Olson, Kor Nielsen, Stephen Amar, Bryce , Andy Holzhammer, David Jeroslow, Ian Hills, Charles MacDonald, Tim Jones, Crisco762 , Phil E, AnsulFolf , Jack Mudge, Raymond Coutts, Ian Spence, John De Witt, Mike A, Alex Dodge, hipp1eguy , Justin Derleth, El Jefe, NEON725 , Emily Eisenberg, Mark Christian, Dylan Leblanc, Bard , Megan Lovett, LGR, Jeffrey Frasure, kn0tsin , Michael Gooden, David Wulff, Fredrik Lindroth, Michael Riegel, Paul Kavanagh, Isaac Clarke, Sean Hearrell, Christopher Macdonald, Selectric , Keithius , Sönke Schlüter, Julian Haldenby, Seb Bacanu, Mauricio , Hunter Thornsberry, Austin C Borger, Gabe Cook, Anapan, S0N0S , Michael Patron, Sonic Ether, mike quick, Kyle Ramer, Adam , Lucas , microserf , Daniel Kraut, André Gil da Costa, Luka Sanzin, Peter Hillier, PeterH , William Holt, Ethan Hamel, Grant Campau, Else , Michael Dunn, Rin , Richard Hicks, Atlas Pup, Levi Maaia, Mike Roach, Simon Janssen, Jorge Caballero, Kyle Messner, Matthew Schwartz, gs , ashka , Mr. Yan, Matthias Feist, RedR0ze , adan c, Thomas Fuchs, Alan Holland, Dan Boulden, Phiroze Dalal, Devin Rosenthal, Avalon Hamakei, Ray Hardman, G Cowell, Kevin Hamilton, Chase Tarson, Christopher D\'Arpa, Marshall Kurtz, Matt Goldman, Hurf Durr, shaun morris, Miguel Gonzalez, Bryce Ontiveros, Kenneth A Cusson, Johnathan Reale, Charles Corbin, Simon Arrow, Brett Walton, Martin Schröder, lakewalk3r