JEAN LOUIS LEGRAND
29 articles published in Tangente
Math for everyoneN°67Jun 29, 2018The going rate for black gold
Should we fear an oil shortage or a surge in oil prices?
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Math for everyoneN°67Jun 29, 2018Air pollution: the toll in numbers
How can we measure the effects of pollution? Is it true, as some claim, that air pollution causes 48,000 deaths a year in France and that fine particles, especially emitted by diesel engines, account for 9% of these deaths? Mathematical tools can help provide answers.
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Math for everyoneN°67Jun 29, 2018The science of wind turbines
Enthusiasm for generating electricity with wind turbines often overshadows scientific analysis. Where do we stand on the generation and distribution of this energy? What impact does it have on greenhouse gas emissions? Let's see what the figures tell us.
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History and CultureN°67Jun 29, 2018Measuring temperature
The Earth's average temperature is rising. But how is it measured?
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Games and ChallengesN°182May 17, 2018Tip-top: the tippe top!
In playgrounds, the tippe top is often called a "magic top" because it flips itself over, turning upside down. Its counterintuitive behavior is subtle...
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