Mythbusters Recap: Mentos and Soda
Mentos™ + Soda. The first myth is interesting for two reasons. The first is that it shows pictures of Kari's photo shoot with FHM Magazine, and, well, who wouldn't like that? But more importantly it shows the very interesting result of what happens if you drop a couple of classic Mentos™ into a bottle of diet soda. What happens is rather amazing - a fountain of drink spouts up nearly ten feet in the air.
The interesting thing here is that there is no actual myth - it's stated up front that it happens. So Adam and Jamie spend the next few minutes (of the show - I'm quite sure that real time took somewhat longer) trying to figure out what makes everything go, and it turns out that everything does. Certain pieces contribute, but in the end it's all the pieces of the puzzle that make the combination turn into a veritable geyser of cola.
So the next step is of course to see how high they can get the thing to go, and though Jamie insists he doesn't want to get into a competition, once he gets involved, he of course can't let Adam win. The initial mark is a measly 18 feet, and that is quickly bested and before long they are shooting to the top of the building and then they have to extend their baseline to be able to measure it finally topping out around 34 feet.
Unfortunately the final stage of the experiment, to produce a rocket with this lovely concoction, failed pretty miserably, because it's not so much thrust as just a bunch of bubbles. It just didn't have enough force to lift all that cola. So then Adam and Jamie set out to try and find other stuff they could have fun with, most of which involves things exploding and none of which are as safe and as fun (albeit sticky) as Mentos™ and Soda.
And if you still can't get enough? Check out those wacky guys at EepyBird.com to see what they've got cracking, including a video with some 200 bottles of soda and 500 pieces of candy set to music. It's impressive and they have more on the way. You can tell them I sent you, but it won't really matter that much.
Postage Stamp on a Helicopter. Meanwhile, the other group gets a myth off of the web site whereby certain fanatics believe that the blades of a helicopter are so finely balanced that even a tiny weight affixed to a blade, such as that of a postage stamp, can cause a catastrophic failure. It turns out that helicopters are monumentally expensive, so they instead buy a couple of models instead.
One is a scale model of the Oakland police helicopter, and they put a scale postage stamp on and... it does nothing. Until they add the equivalent of about eight thousand stamps. Then it rips itself apart quite nicely. So they move on to a real helicopter where a technician helps them monitor the blades, and they see that adding a postage stamp does affect the balance - one-one-thousandth of an inch. Not enough to do anything. Unfortunately, they won't let them add eight thousand stamps to the real helicopter, so that was the end of this myth. Busted.


















Comments
I could have told them the postage stamp would not take down a helicopter. Military choppers take up to .50 caliber bullet holes in their blades in combat and keep on flying.
Posted by: Ted | August 24, 2006 7:20 PM