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Chalmers team develops method to reduce levels of mercury in sulfuric acid

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Researchers at Chalmers University of Technology, Sweden, have developed a method that can reduce the levels of mercury in sulfuric acid by more than 90%, even from low levels. It is therefore a worldwide challenge that sulfuric acid often contains one of the most toxic substances: mercury.

Mercury 195
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The Birth of Random-Access Memory

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Over the years, memory has been made up of vacuum tubes, glass tubes filled with mercury and, most recently, semiconductors. The first electronic digital computer capable of storing instructions and data in a read/write memory was the Manchester Small Scale Experimental Machine, known as the Manchester “Baby.”

Store 111
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The Tiny Star Explosions Powering Moore’s Law

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Supernova explosions, the catastrophic self-destruction of certain types of worn-out stars, are intimately tied to life on Earth because they are the birthplaces of heavy elements across the universe. Most of the iron in our blood and the sulfur in our amino acids originated in stars that detonated billions of years ago.

Power 141
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A Picture Is Worth 4.6 Terabits

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Clark Johnson Employer Wave Domain Title CFO Member grade Life Fellow After graduating at age 19 with a bachelor’s degree in physics in 1950 from the University of Minnesota Twin Cities , he was planning to go to graduate school when he got a call from the head of the physics section at 3M ’s R&D laboratory with a job offer.

Store 125
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How to Prevent Another Europa Clipper Transistor Panic

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The canary box “is a very logical engineering solution to a problem,” says Alan Mantooth , an IEEE Fellow and a professor of electrical engineering at the University of Arkansas. But “if we’re doing something on Mercury or we’re doing something close to the Sun—any high temperature stuff … silicon carbide’s your winner.”

Design 145
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5 Big Ideas for High-Temperature Superconductors

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In 1911, Dutch physicist Heike Kamerlingh Onnes plunged a mercury wire into liquid helium and noticed that the wire’s electrical resistance vanished. Once the coil is charged, the energy can be stored nearly indefinitely with little to no decay, provided that the cooling is maintained. The wire had become a “superconductor.”

IDEA 135
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Generating Power on Earth From the Coldness of Deep Space

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But we have demonstrated that by directly using power generated by the cold universe, we can chill water to cool buildings by as much as 5 ºC during the day without electricity and light the night without wires or batteries. So far, SkyCool has installed panels at a number of grocery stores across the United States. Sound crazy?

Power 145