Kyle Jones, a guitarist, had the clever idea of recording himself playing guitar from inside his guitar. He didn’t expect to see the guitar strings turn into wacky, wavy and shapely lines. It’s crazy. And it’s thanks to the iPhone.
This giant slingshot can fire six 20mm steel balls at the same time, hitting its target with an energy of about 60 joules each. That’s enough to destroy a few human heads in a row, but thankfully they tried it with watermelons.
