Upload

Mousetrap Fission

by Harvard Natural Sciences Lecture Demonstrations • 268,999 views

An array of 138 mousetraps are set off in a chain reaction. Ping-pong balls help visualize both neutrons and the release of energy. Shot in 600 fps and 1000 fps. Thanks to Rob for letting us use...

This is how the Romanian lottery numbers are drawn, that's why nobody wins the jackpot.
Report spam or abuse
THANK YOU, SO MUCH FOR POSTING THIS NEAT VIDEO -- I'VE FOUND SOME EXCELLENT USES FOR IT. ============================================== 0302 1030 -- THE GREAT HUMAN CHAIN-REACTION IS EXACTLY LIKE THIS VIDEO SNIPPET! . 1. EVERY SINGLE SOUL MATTERS TO THE WHOLE THING.  . Our every act or omission -- tiny or huge -- ripples outward through our tightly interconnected species -- CHANGING THINGS -- for better or for worse -- for a great many souls -- and does so for long after we had forgotten that we had so-acted or so-refrained -- and far beyond any horizon we will ever get to see -- yet our existences are constantly at work, changing this very world -- undeniably. . 2. You've heard the expression: "WHAT GOES AROUND COMES AROUND?"  . Well here is that concept -- exemplified -- clear as day (watch the different takes -- to the very end of the video -- to see some profound perspectives.) . 3. The world would be a far different world -- for better or worse -- had anyone of us never existed.  . We all matter, BECAUSE OF ourselves and DESPITE ourselves.  . One impetus is clearly superior to the other -- as long as the cause is righteous and the method is sound and reasonably benign. . 4. The great human chain-reaction has been going on since the very first humans -- and will only stop just beyond the very last -- once the remaining echoes of our existences are silenced.
Report spam or abuse
Igor Vovk Shared on Google+ · 2 months ago
Report spam or abuse
After watching the peepeesi commercial I was convinced there was a predecessor. Turned it off began looking. Found
Report spam or abuse
Reminds me of a lottery drawing!!
Report spam or abuse
Could this be the science project????
Report spam or abuse
Report spam or abuse
Try again, but stick the mousetraps down so that it's just the balls that fly around, not the traps.
Report spam or abuse
Report spam or abuse
Can you please do this again using eggs?
Report spam or abuse
Most U-235 fissile reactions honk out two neutrons, not one. This reaction is largely triggered by other mousetraps. not ping-pong balls.
Report spam or abuse
@NatSciDemos I did this with 6 mousetraps and pingpong balls when I was 9, in 4th grade at Montclair Elementary School, Denver, CO, back in 1960. It was not in a clear plastic enclosure, but it was still quite impressive. Learning to set the mousetraps was a total PITA, though, and made me cry the first few times my fingers got caught in the traps. Come to think of it, I think that was when I learned to curse, too!
Report spam or abuse
Saw it on Disneyland program in the 50s.
Report spam or abuse
Report spam or abuse
Nice job! Science at its best! Reminds me of an old Disney film called 'Our Friend the Atom' where they made a similar experiment. /watch?v=ESpRFkXon7g around the 6min. mark. Thanks again for the spectacular demonstration.
Report spam or abuse
Report spam or abuse
@gungrave4ever we've certainly had our share of disasters. they seem to mostly happen at the worst possible time--like 5 minutes before a lecture!
Report spam or abuse
I saw the same demonstration about 50-55 years ago on TV - I can't remember the studio that produced it.
Report spam or abuse
My mind just told me that this would be awesome in a grand scale, like a stadium or something... completely covered in pinged mouseballs pongtraps.
Report spam or abuse
The front row, second mousetrap: THE SOLE SURVIVOR OF THE APOCALYPSE!! BOOYAH!
Report spam or abuse
Report spam or abuse
didn't the original xbox do this first :p
Report spam or abuse
Report spam or abuse
Report spam or abuse
Those mousetraps actually impart alot of velocity, @ 0:35 a mousetrap damn near hits the top of the tank.
Report spam or abuse
next time, plz record in 3d.
Report spam or abuse
Hello. I'm making a video and would like to include a bit of your ping pong ball experiment. Could I get your permission? Thanks.
Report spam or abuse
I watched this same experiment on Mr. Wizard's world when I was a kid back in the 80's.
Report spam or abuse
@ 0:56 watch the 11th trap from the bottom in the far right row. It never goes off.
Report spam or abuse
next time throw a live rat or monkey in there...you know just for science purposes
Report spam or abuse
suggest to watch about mousetrap nuclear fission experiment: /watch?v=xyY4cWKPrSc
Report spam or abuse
You need to first send us an email via the address listed on the home page of our official website. Please specify the purpose of your project in the email.
Report spam or abuse
@gungrave4ever no mishaps this time, although the first ball (at 0:15) landed in an unlucky place.
Report spam or abuse
Report spam or abuse
Now do it with metal BB pellets. Yeah, see the reaction to that.
Report spam or abuse
Also bottom row second trap from the left. It gets bumped and moved, but never trips.
Report spam or abuse
I would like to see this done with golf balls, semi-breakable glass, and in 3D.
Report spam or abuse
Sign in to add this to Watch Later

Add to