The rotor moves slowly most of the times but does pick up at certain intervals. This process continues for many hours. Since the rotor is quite heavy (and hence more inertia) a small geared DC motor can be connected to the rotor to generate power for cell phones, $100 laptops, and other things in Africa. People can leave this thing to charge their phones/$100 laptops overnight.
Basically we have two chambers on either end of the rotating (pivoted) rod. The arrangement of the chambers is such that on either side of the rod, one chamber sits on top of the other (this is important). At the beginning of this operation, I fill the bottom chamber on each side with a yeast sugar solution. Each bottom chamber is always locked under pressure by special valves. Due to pressure the solution starts moving from a bottom chamber into its respective top chamber. Note that by moving upwards, the fluid’s center of gravity shifts, resulting in a mass imbalance which causes the wobbling.
Eric Hashbargar’s weird, laser-engraved dice are a tour-de-force: a pair of D6s for figuring out where to go for dinner in NYC; another D6 to figure out which die you should roll; an all-20s critical hit D20; Sicherman D6s that have different faces to a normal D6 pair, but the same probability distribution; punctuation mark […]
Redditor ipee9932cd couldn’t find a keyboard to their liking, so they built the casing of their dreams—out of cement. The brutal board weighs in at 12 pounds (yes, heavier than an IBM Model M) and “it takes some force to move it.” Being my first concrete cast, I chose not to put any rebar and […]
#1. A-Audio Legacy Noise Cancelling Headphones with 3-Stage Technology The A-Audio Legacy Headphones are the Boing Boing Store’s best seller this month, and it’s easy to see why. With 40mm drivers, powerful circuitry, and memory foam padded circumaural ear cups, these are clearly super high-quality headphones. Plus, the patented 3-Stage Technology lets you toggle between passive […]
Vaping is getting more mainstream by the day, which means there’s been an influx of quality yet affordable vaporizers on the market. We’re particularly excited about the APX Wax Vaporizer Kit, which is an easy-to-use, high-quality vape that works with both dry herbs and waxy concentrates.If you’re a beginner trying to get into vaping, the APX […]
When you’ve had a long day and it’s time to unwind, there’s a lot you can do to relax: drink some tea, take a shower or even read a book. But there’s one thing that’s essential to a comfortable night’s rest—and that’s investing in some really good sheets. Enter Bamboo Bed Sheets. These quality sheets retail for $120, but […]