It’s probably the most asked question we get… “How exactly does that experiment with the Mentos and Diet Coke really work?” From the outset (nearly eight years ago), we hypothesized that the exploding soda was a physical reaction, and the key factor in the release of carbon dioxide was the microscopic pits on the surface
of the chewy mint. However, there was no real scientific study that anyone could point to as the definitive answer… until now. In the June issue of the American Journal of Physics, Tonya S. Coffey, an assistant professor of physics and astronomy at Appalachian State University, in Boone, N.C., and her team of fearless physics students reported on the ingredients, temperature dependence, duration, and other parameters of the suddenly famous Mentos-Diet Coke reaction.
There has been considerable debate over gum arabic (found in the coating of the mint) and the role it plays in the physical reaction. Coffey’s group was able to confirm that the surfactant gum arabic is a key component of the reaction: It reduces surface tension, thereby
In our continuing quest to find interesting blogs and bloggers, we ran into Leah Simmers Photography Blog, where she was capturing her experience with Mentos and Diet Coke. Thanks to Leah for letting us share some her unique geyser pictures here. Check out Leah’s full blog post here. And yes, that is the Geyser Tube she’s using to launch that screaming geyser.
So, America throws it back to the Europeans… from Louisville, KY to Turiba University in Latvia there is a new Mentos and Diet Coke World record. On June 19th, 1,911 students from Business University Turiba in Latvia launched an amazing geyser eruption and landed themselves in the Guinness Book of World Records, just over a month after students at Male High School in Kentucky launched 1,800 simultaneous geysers to earn their own world record status. The Latvian University students were celebrating the school’s 15th anniversary, and what better way to celebrate than with Mentos and Diet Coke. Check out the video of this monumental occasion. Now, who’s next…
Robert Woodhead is always looking for a new challenge with his Casio EX-F1 camera. I found Robert’s first Mentos Geyser reaction on Gizmodo using just a roll of Mentos and a bottle Diet Coke. Watching the reaction at 1200 fps is truly amazing. Robert found a willing subject (the kid running from the exploding bottle) and sent us this video. Huge thanks!
If you haven’t seen the Mentos Slow Motion Video from the people at Perfetti Van Melle, watch it! At 2,000 frames per second, you can actually see the carbon dioxide bubbles forming on the nucleation sites.
Weezer has a new video up on YouTube and guess who’s in it? EVERYONE. Well, every YouTube star you can think of seems to have a cameo, including the EepyBird Guys doing their Mentos Experiment #771. The song is called Pork and Beans and the video is great. Congratulations to Stephen and Fritz (the EepyBird Guys) for hitting a home run with Weezer.
