Bo Andersson built a wind-powered generator just because he wanted one to use as a foundation for more experiments. When people said his idea to use a truck "rear end," or differential, to transmit wind power to a generator on the ground wouldn't work, he went ahead and put it on top of a 30-ft tower. Now Bo puts power back into the grid. And he can truly reap the wild wind.
Bo didn't listen to the nattering negative naysayers and got the job done. The reason it worked is because it's been done successfully many times and beginning years back. Differentials from old junked cars, etc. have been a convenient source for mechanical drives since the Model A. Considering he's been around a few years, Andersson may have even seen such a setup or read about one. Actually seeing or knowing firsthand something works is better than any number of people who think they know why it won't. Good for him!
A Tokyo company, Miraisens Inc., has unveiled a device that allows users to move virtual 3D objects around and "feel" them via a vibration sensor. The device has many applications within the gaming, medical, and 3D-printing industries.
In the last few years, use of CFD in building design has increased manifolds. Computational
fluid dynamics is effective in analyzing the flow and thermal properties of air within spaces. It can be used in buildings to find the best measures for comfortable temperature at low energy use.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.