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Why Vaclav Smil Is Fed Up with Climate Activism

The acclaimed environmental scientist is annoyed with the eco movement and shunning media just when we need him most ....

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A Brief History of Transformers (Not the Robot Kind)

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The theoretical foundation was laid in the early 1830s, with the independent discovery of electromagnetic induction by Michael Faraday and Joseph Henry. They showed that a changing magnetic ﬁeld can induce a current of a higher voltage (known as “stepping up”) or a lower one (“stepping down”). But it took another half-century before Lucien Gaulard, John Dixon Gibbs, Charles Brush, and Sebastian Ziani de Ferranti could design the ﬁrst useful transformer prototypes. Next, a trio of Hungarian engineers Ottó Bláthy, Miksa Déri, and Károly Zipernowsky improved the design by building a toroidal (doughnut-shaped) transformer, which they exhibited in 1885. ....

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