Video: Welke apparaten gebruikten we in de jaren 80 en 90?

Studium Generale Delft

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Artikel: quantumverstrengeling als opmaat naar supersnel internet

Michael Irving / New Atlas

With more sensitive data than ever being shared – and stolen – online, more secure connections are desperately needed. The answer could be a quantum internet, where information is passed almost instantaneously between nodes that have been quantum entangled and are therefore physically unhackable, since any unauthorized observation of the data will scramble it. Researchers at Delft University of Technology have now overcome a major hurdle on the road towards that goal by generating quantum links faster than they deteriorate.
Quantum entanglement is a strange phenomenon where two particles become so intertwined that by looking at the state of one you can accurately infer the state of the other, no matter how large a distance separates them.

 

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Artikel: Extracting carbon dioxide from the air is possible. But at what cost?

The Economist

IN MAY some 250 scientists and policy types from around the world convened in Gothenburg, Sweden, to discuss a dirty secret of the three-year-old Paris climate agreement. Virtually all simulations which chart paths toward meeting that compact’s goal—to keep temperature rise “well below” 2°C relative to pre-industrial levels—assume not just a sharp reduction in actual emissions but also the removal of carbon dioxide from the atmosphere on a massive scale. One reason such “negative emissions” have been absent from climate discussions—the Swedish shindig being the first of its kind—is that no one has a good idea of how exactly to bring them about. The obvious solution is to plant lots of trees, to convert CO2into wood. But this would mean foresting an area with a size somewhere between that of India and Canada. Alternative, engineered fixes have been dogged by potentially stratospheric costs, uncertain efficacy or both.

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Artikel: Kernfusiereactor bereikt de temperatuur van de zon

New Atlas

One of the possible pathways to limitless and clean energy can be found in hollow, doughnut-shaped chambers known as tokamak nuclear fusion reactors. A relatively new player on the scene, a UK company called Tokamak Energy, is claiming a new milestone in the area after heating its ST40 device to 15 million degrees Celsius, similar to temperatures found at the center of the Sun.

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