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.
Craiglist has something wonderful on it: a vast collection of more than 600 vintage Smith-Corona typewriters, including accessories and marketing literature. Yours for a hundred grand. My collection consists of over 600 typewriter items including the company’s first typewriter in the 1880’s to one of the company’s last typewriters in 2000’s and all models in […]
We’re huge fans of portable power gadgets, but this one isn’t going in my pocket to help me keep my phone topped up after lunch. Anker’s Powerhouse is the size and weight of a concrete construction brick, and at $500 and 120,000mAh, by far their largest power pack yet. It’ll charge your laptop 15 times […]
Dyson, makers of high-end vacuum cleaners and other gadgets that do clever things with air, is moving into beauty products. The Dyson Supersonic hair dryer promises a premium model’s power in a smaller, quieter package, and was built around the company’s smallest motor yet. It’s priced at $400, too — apparently not unreasonable for salon […]
Almost everyone has their smartphone in a case of one kind or another. Beyond simple protection, finding a case that can charge your phone on its own, but doesn’t feel like it’s also adding a couple pounds to the phone’s weight is the tricky part. Billed as the world’s thinnest battery case, the ThinCharge iPhone […]
You never know when new projects, ideas or opportunities can drop into your lap at a moment’s notice. That may require you to learn a new programming language like Python. Or maybe you need a primer on 3D game development. Or you might realize you could use a serious brush-up on iOS mobile creation.Point is, […]
Isn’t it about time to stretch what your Mac can do? I mean, you’ve got plenty of great programs now…but don’t you think you could use some new tools to get your creative, analytical and organizational juices really flowing? It’s spring, so we cleaned up a whole bunch of super-cool apps lying around and packaged […]