Rick Crammond has found a way to improve the Tesla turbine design and give it an update that can sharpen pencils at 2,200 rpm. That's some fast cranking. The turbine alone can reach speeds of 8,000-to-12,000 rpm before it self-destructs. So, Rick built a "bullet-proof" containment box. The turbine, which requires no bearings or shafts, runs on compressed air and spins a pair of disks magnetically coupled to the sharpener.
The promise of the Internet of Things (IoT) is that devices, gadgets, and appliances we use every day will be able to communicate with one another. This potential is not limited to household items or smartphones, but also things we find in our yard and garden, as evidenced by a recent challenge from the element14 design community.
If you didn't realize that PowerPoint presentations are inherently hilarious, you have to see Don McMillan take one apart. McMillan -- aka the Technically Funny Comic -- worked for 10 years as an engineer before he switched to stand-up comedy.
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.