Neil deGrasse Tyson Explains LED Lights

What’s the difference between light and heat? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice break down why some lights make heat and others don t. Discover the science behind LED light bulbs. What is the difference between light and heat? We explore the light spectrum from infrared to UV. Should a light bulb be able to get hot? How do LED lights save so much energy compared to an incandescent bulb? We answer the question: Is red hot really that hot? Get the NEW Cosmic Queries book (5/5 ⭐s on Amazon!): https://amzn.to/3dYIEQF Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #NeildeGrasseTyson 0:00 - Introduction 0:18 - The difference between an Astrophysicist and a Photographer 0:38 - The science of infrared energy 2:45 - The wasted energy of traditional lightbulbs 4:09 - The brilliance of LEDs 9:10 - What are black-lights? 9:58 - Closing notes