Slingshot's Designers Say You're Using It Wrong

Facebook's new app, Slingshot, is confusing. The premise behind it is that you can send images to your friends—but they won't be able to see your image until they send one back to you. As a messaging service, it's flawed. But, according to the app's designers, it's not a messaging service. It's something entirely… » 6/23/14 4:00pm 6/23/14 4:00pm

An Extracurricular And Deadly Use For Pencils

I wouldn't say using pencils as zombie-killing projectiles would be my first thought, but if you do enough slingshot-ing I guess it makes sense that you would eventually run up against office supplies as a source of inspiration. Joerg updates his pencil shooter to be crank operated and more efficient. It can shoot… » 10/06/13 8:30pm 10/06/13 8:30pm

Alien Probes Could Already Be In Our Solar System According To Math

If you've been trying to recall what makes theoretical math super fun, here's a reminder. Researchers from the University of Edinburgh published a paper in the International Journal of Astrobiology that examines how long it would take Voyager-sized probes to bop around the Milky Way and eventually encounter our solar… » 7/21/13 11:30am 7/21/13 11:30am

The Slow-Motion Physics of Hand-Held Slingshots

We're big fans of the Smarter Every Day and Slingshot YouTube channels—so it's always nice when Destin and Joerg, their respective owners, get together. This time round, they use high-speed photography to take a close look at the physics of hand-held slingshots—and work out how to make them as destructive as possible. » 7/20/12 5:23am 7/20/12 5:23am

Who Needs Superman? Slingatron Slingshots Stuff Into Space

This Slingatron is the greatest thing we can think of to free up Superman's time for other things, like courting Lois or getting drunk and being a dick. Instead of spending $10,000 per pound to send stuff into space with traditional rockets, this Slingatron design is like a centrifuge that spins things around until… » 6/06/07 7:20pm 6/06/07 7:20pm