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Category: transportation – Page 461

Antoine Henri Becquerel (born December 15, 1852 in Paris, France), known as Henri Becquerel, was a French physicist who discovered radioactivity, a process in which an atomic nucleus emits particles because it is unstable. He won the 1903 Nobel Prize in Physics with Pierre and Marie Curie, the latter of whom was Becquerel’s graduate student. The SI unit for radioactivity called the becquerel (or Bq), which measures the amount of ionizing radiation that is released when an atom experiences radioactive decay, is also named after Becquerel.

Becquerel was born December 15, 1852 in Paris, France, to Alexandre-Edmond Becquerel and Aurelie Quenard. At an early age, Becquerel attended the preparatory school Lycée Louis-le-Grand, located in Paris. In 1872, Becquerel began attending the École Polytechnique and in 1874 the École des Ponts et Chaussées (Bridges and Highways School), where he studied civil engineering.

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Supersonic air travel is back. 15 years after the Concorde was grounded, everyone from aerospace companies to NASA to small startups is working to bring back ultrafast civilian aircraft. We take a look at the engineering challenges that make supersonic flight so difficult, and try to figure out what’s different about this new generation of planes.

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Right now, in the desert just east of Reno, Nevada, Tesla is drilling into recently laid asphalt to install more electric vehicle chargers in the parking lot of the Gigafactory. The company has hired so many new workers in recent years that it needs more space to let them charge their Nissan Leafs, Chevy Bolts, Toyota Priuses, and, of course, Teslas. But before long, those chargers will be ripped right back out, along with the asphalt, and moved to a new spot to make room for more factory space.

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All of today’s computing takes its root from the world of “bits”, where a transistor bit, which lies at the heart of any computing chip, can only be in one of two electrical states: on or off. When on, the bit takes on a value of “1” and when off, it takes on a value of “0”, constraining the bit to only one of two (binary) values. All tasks performed by a computer-like device, whether a simple calculator or a sophisticated computer, are constrained by this binary rule.

Eight bits make up what is called a “byte”. Today, our computing is based on increasing the number of bytes into kilobytes, megabytes, gigabytes and so on. All computing advances we have had thus far, including artificially intelligent programmes, and driverless cars are ultimately reduced to the binary world of the bit.

This is a natural extension of western thought; for centuries, western philosophy has followed the principles of Aristotelian logic, which is based on the law of identity (A is A), the law of contradiction (A is not non-A), and the law of the excluded middle (A cannot be both A and non-A at the same time, just as non-A cannot be both non-A and A at the same time).

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