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The vacuum tube strikes back: NASAs tiny 460GHz vacuum transistor that could one day replace silicon FETs

2014-06-24 14:12:20| Extremetech

Way back in the salad days of digital computing (the 1940s and '50s), computers were made of vacuum tubes -- big, hot, clunky devices that, when you got right down to it, were essentially glorified light bulbs. This is why early computers like the ENIAC weighed more than 27 tons and consumed more power than a small town. Later, obviously, vacuum tubes would be replaced by probably the greatest invention of all time -- the solid-state transistor -- which would allow for the creation of smaller, faster, cheaper, and more reliable computers. Fast forward to 2014, though, and the humble CMOS field-effect transistor (FET) is starting to show its age. We've pretty much hit the limit on shrinking silicon transistors any further, and they can't operate at speeds much faster than a few gigahertz. Which is why NASA's Ames Research Center is going back to the future with its new vacuum transistor -- a nanometer-scale vacuum tube that, in early testing, has reached speeds of up to 460GHz.

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Delta Air CEO to back U.S. Export-Import Bank support to Boeing: WSJ

2014-06-24 08:32:48| Airlines - Topix.net

Delta Air Lines Inc's CEO is expected to support the U.S. Export-Import Bank's assistance for sales of Boeing Co's widebody jets, softening his stance at a time when critics are mounting pressure to wind down the agency, the Wall Street Journal reported.

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Activist Investor Whitworth: Back To The Garbage Biz

2014-06-24 04:24:14| Waste Management - Topix.net

Clean Harbors is not a growth company and it's not in a growth industry, however.

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US Supreme Court cuts back climate change regulation

2014-06-23 16:32:00| Climate Ark Climate Change & Global Warming Newsfeed

Reuters: The U.S. Supreme Court on Monday trimmed the Obama administrations power to curb greenhouse gases under a long-running air pollution program in a decision that means most major facilities, including power plants and refineries, will continue to be regulated. On a 7-2 vote, the court rejected an industry-backed argument that most emitting facilities should not be regulated for greenhouse gases under one particular air pollution program of the U.S. Environmental Protection Agency (EPA). But...

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Stock Upgrades: BlackBerry Gets Its Groove Back

2014-06-23 16:30:17| Air Courier - Topix.net

BlackBerry , left for dead not long ago, surged 24.33% last week on its better-than-expected fiscal first quarter earnings.

Tags: back stock upgrades groove

 

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