SYNCHRONIZE WITH DEREK'S VIDEO: http://bit.ly/SouthernSwirl Both videos on one page (for desktop): http://bit.ly/ToiletSwirl Subscribe to Veritasium: http://bit.ly/Sub2Veritasium TWEET THIS! http://bit.ly/ToiletSwirlTWT ↓↓↓↓↓↓↓More info Below ↓↓↓↓↓↓↓ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET SMARTER SECTION: Some notes about this. We each repeated the experiment 3 times, and got the same results every time. For those of you who might be skeptical, great! The good news is that right circularly prismatic kiddie pools are only $10 and you can do the experiment for yourself at your latitude. There's really no reason you shouldn't do this on your own, so before you criticize how we've done it, I'd strongly encourage you to do it for yourself. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun):https://amzn.to/2y3CI7D Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Smarter Every Day Instagram: http://instagram.com/smartereveryday Patreon Support Link: http://www.patreon.com/smartereveryday Twitter: http://twitter.com/smartereveryday www.facebook.com/SmarterEveryDay Veritasium on Instagram: http://instagram.com/veritasium Patreon Support Link: http://www.patreon.com/veritasium Twitter: http://twitter.com/veritasium http://www.facebook.com/veritasium Gordon McGladdery did all of the sound design for the video. We used two songs from other artists (licensed of course). Derek split the first one up so it fades from video to video, and Gordon split the instruments up on the second one. There are violins on one video and percussion on the other for example. It's really neat. The neat earth animation at the beginning and the synchronizing timer was made by http://eisenfeuer.com/. He also made still images of the earth from the top and the bottom. Thanks to Jacob Vehrs for helping make the plywood pool platform. GET SMARTER SECTION: There was a study performed at MIT years ago (http://web.mit.edu/hml/ncfmf/09VOR.pdf) that explained the physics involved. We repeated some of these demonstrations, but on opposite sides of the globe…and in a way that can be easily understood. This site is a great resource on the Coriolis effect and ways people have gotten it wrong: http://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html The Coriolis Effect influences the flight of a bullet. http://www-das.uwyo.edu/~geerts/cwx/notes/chap11/artillery.html We would love for someone to replicate this demonstration. Please tweet your results to us @SmarterEveryDay and @Veritasium. Here's the link to puchase the exact same pool: http://www.amazon.com/Intex-56451NP-Inflatable-Snapset-Pool/dp/B000OV0X34/ref=sr_1_1?s=toys-and-games&ie=UTF8&qid=1433743067&sr=1-1&keywords=5%27+kiddie+pool ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Tweet ideas to me @SmarterEveryDay The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for the kids' education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO! If you REALLY liked it, feel free to pitch a few dollars towards their college fund by clicking here: http://bit.ly/KidsCollege Warm Regards, Destin