Skipping stones takes a little practice and finesse, so Mark Rober enlisted his extended family to help build the perfect rock-skipping robot. Their creation, named Skippa, ended up helping humans learn, too.
I built a rock skipping robot with the help of my nieces and nephews to understand the perfect way to skip a rock. In the end we learned that 4 things matter most:
1) Rock angle of 20 degrees
2) Rock PATH angle of 20 degrees
3) Spin the rock as much as possible
4) Choose a rock that is flat on the bottom and as heavy as possible for you to still get to your max arm speed.
• Rock Skip Robot- The SCIENCE of PERFECT ROCK SKIPPING (YouTube / Mark Rober)
I’ve had quite a few fun afternoons playing with dry ice from making spooky fog in the kitchen to exploding plastic bottles in the yard. But I’ve never had the opportunity to pour hot lava over dry ice. In this video, the lava is 1400 °C and the dry ice is -78C°. So cool! And […]
A Boston University team have developed an acoustic, 3D-printed metamaterial whose topology is such that it reflects 94% of human-audible sound; the researchers' demonstration involves inserting a ring of this stuff in a PVC pipe and blasting a speaker down one end: light and air emerges from the other end, but sound does not.
Scientists Lior Appelbaum and David Zada in Israel publish new proof that sleep serves to help our brains repair damage.
Seems like drones are doing a lot of jobs these days, from reconnaissance to delivery. Now, we can add “keeping the Death Star safe” to that list. Whether you’re a drone enthusiast or a Star Wars fan, these Star Wars Propel Drones are undeniably the coolest toy around. Yes, that’s a fully functional drone replica […]
It’s spring clearance time for the Boing Boing Store, when some of the best deals from the holidays return even cheaper than before. From top-rated apps to educational software to the cutest record player of all time, they’re all back with a little extra incentive. Shop your heart out before tax season wraps up! Use […]
Big companies want automation on a big scale. Doing that means diving into the tricky world of machine learning and data science. And no matter what platform you’ll be implementing it on, you can learn how with the Machine Learning & Data Science Certification Training Bundle. In 48 hours and through eight courses, this bundle […]