Solar cells that provide as much as 50% more power for Earth-orbiting satellites will help flash back telephone and television signals from space. The cells are based on the two-junction, gallium indium phosphide on gallium arsenide designs developed at the Department of Energy's National Renewable Energy Laboratory (NREL) (Golden, CO). TECSTAR Inc. (City of Industry, CA) licensed two patents covering the technology for space use. It has adapted the NREL technology to use germanium substrates for the epitaxial growth of the cells. This, in turn, should result in greater efficiencies and reduced costs for space missions. Commonly used silicon cells lose about half of their efficiency after five years in space. The gallium indium phosphide top layers of the new NREL cells have far more resistance to radiation damage, giving them a much longer space life. E-mail email@example.com.
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.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
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.