The Truth About Toilet Swirl – Southern Hemisphere

SYNCHRONIZE WITH DESTIN’S VIDEO: 在家DIY的最佳美甲://bit.ly/NorthernSwirl
Both videos on one page (for desktop): 在家DIY的最佳美甲://bit.ly/ToiletSwirl
Subscribe to Smarter Every Day: 在家DIY的最佳美甲://bit.ly/SubscribeSED
Click to tweet: 在家DIY的最佳美甲://bit.ly/ToiletSwirlTWT

Some notes:
We each repeated the experiment 3 times, and got the same results every time. For those of you who might be skeptical, great! A right circular prismatic kiddie pool is only $10 and you can do the experiment for yourself at your latitude. There’s really no reason you shouldn’t do it for yourself.

Veritasium on Instagram: 在家DIY的最佳美甲://instagram.com/veritasium
Patreon Support Link: 在家DIY的最佳美甲://www.patreon.com/veritasium
推特: 在家DIY的最佳美甲://twitter.com/veritasium
在家DIY的最佳美甲://www.facebook.com/veritasium

Smarter Every Day Instagram: 在家DIY的最佳美甲://instagram.com/smartereveryday
Patreon Support Link: 在家DIY的最佳美甲://www.patreon.com/smartereveryday
推特: 在家DIY的最佳美甲://twitter.com/smartereveryday
www.facebook.com/SmarterEveryDay

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 Vanessa for filming in Sydney: 在家DIY的最佳美甲://youtube.com/braincraftvideo

MORE INFO:

There was a study performed at MIT years ago (在家DIY的最佳美甲://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:
在家DIY的最佳美甲://www.ems.psu.edu/~fraser/Bad/Ba…