The LED’s Challenge to High Pressure Sodium

You can support this channel on Patreon! Link below Now that we know why street lights are orange, let’s look at whether or not they should still be so. The answer isn’t as straightforward as it might seem. Although newer technology seems to surpass HPS in nearly all respects, there are still considerations to be made. Link to the Previous Video: Technology Connections on Twitter: Sources (lot’s of great ones!): Lighting Research Center study comparing induction and metal halide sources to HPS: US Department of Energy’s information on blue light sources in street lighting: Lighting and Blue Light University of Pittsburgh’s environmental assessment of LEDs (in case you are worried about the extra e-waste compared to the mercury and sodium): Some general info on spectral sensitivity of the human eye: Basic info on light pollution (including relative impacts on sky glow) came from everyone’s favorite reliable source of knowledge: Spec sheet for the Cree LED Product overview: More info on spectral misalignment: Where Dr. Alan Lewis’ research is cited: You can support this channel on Patreon! Patrons of the channel are what keep these videos coming. If you’re interested in supporting the channel with a contribution of your choosing, please check out my Patreon page. Thanks for your consideration! And thank you to the following Patrons! Charlie Quigley, Dakota Williams, Adam Erickson, Kevin Terrell, Tommi Hares, Trevor Smith, Thomas Fuchs, Callum Brieske, Tomas, Chuck Floyd, Eitan Tal, Emil Gilliam, Andy Copsey, Bitcore, Filip, Per ’Zapro’ Jensen, Ward Sutherland, Örn Arnarson, Alberto Amatucci, etho624, Chris Giddings, Tomasz Kolinko, Carles Codony, Samuel Plainfield, Jason McMillon, TeaChest Media, Michael Pacheco, Jason Ganiatsas, Mike Gerow, Marc Schroth, Andrew J Thom, Samuel Blakey, Mrpirate707, Frank Harris, Joseph Spiros, Patrick Meister, Sergey Kiselev, Clara Latter, Ashley Grant, Scott Emmett O’Donnell, Tianyu Ge, jeekl, rozboris, Kelly Rose, Paul Fisher, Stephen Vrazel, Applied Science, Peter ford, Sophie Haskins, James Id, Brendan Sheehy, Jay Foreman, Rich Theobald, Kyle Olson, Bryan Reid, Quinton Wilson, Jeremy DeGuzman, Sean Spark, Lucas Hartbarger, Taylor Cuzela, David Lastres, Granger Meador, Jeremy Kitchen, Jason Wellband, Shane Belaire, Paul Emmerich, Matthew Rossi, Paul Craigie, Alex Smith, Nick, Tyler, Paul Williams, Steven Hidy, Fredrik Grufman, Kollin O’Dannel, RJ Kent, Yona, Kevin Strehl, Tony DeSimone, Mike Bailey, Maggie Brown, Howard Kraut, TM, Mark Nicholas Wales, Jason D., T.J. Steckbeck, Pavlo Pravdiukov, Tobias Faller, Marco Anastasi, Peter Byrd, Trix Farrar, Matthew Razza, Mitchel J. Mullin II, Jakob Strande Langgaard, Jan Staval, Paul Walton, Matt Falcon, Steven First, Denver Alexander, Conor Hennessy Sykes, FinaleGrande, Christopher Dickey, OnlyOneSolutionTBHFam, Matt Sackett, Tim Juchcinski, Wayne Marsh, Ernie Smith, foophoof, Stein Strindhaug, Hank Eskin, Brady Brown, Giacomo Scaparrotti, Winfield Trail, Luke Biddle, Marc Ethier, Joseph Hill, John Semander, Bill Basch, Robert Toth, Magnus Tranum, blouerat, PK IF YOU DON’T SEE YOUR NAME: The description was too long to give all of you credit! Going forward, when this happens the first half of you will be featured here and the following half will be on the next video. This is a wonderful problem for *me* to have, but I hope you don’t feel too left out. Thanks for your understanding!