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18 de jun. de 2021 · Famous Stephen Hawking theory about black holes confirmed. News. By Ben Turner. published 18 June 2021. The areas of black holes are tied to the amount of disorder in the universe. The...
- Again
The first-ever images of a black hole, which the Event...
- Invisible Gravity Waves
Unlike gravitational waves — theoretical ripples in...
- Again
1 de jul. de 2021 · A central law for black holes predicts that the area of their event horizons — the boundary beyond which nothing can ever escape — should never shrink. This law is Hawking’s area theorem, named after physicist Stephen Hawking, who derived the theorem in 1971.
- The Point of No Return
- Hawking Radiation
- The “Soft Hair” of Black Holes
Regardless of their size, they are all surrounded by an invisible boundary called the event horizon, the point of no return beyond which nothing can escape, not even light. Around that horizon the masses of dust and gas are so accelerated by the gigantic influx of gravity that they heat up and glow, emitting radiation and sometimes forming an accre...
Hawking’s demonstration that black holes can emit radiation is “his most important result,” Juan Maldacena, a physicist at Princeton’s Institute for Advanced Study who has made major contributions in string theory and quantum gravity, tells OpenMind. But at the time, this Hawking radiation opened a real schism between relativistic and quantum physi...
But for its part, the so-called information paradox has remained the most important of the questions raised by Hawking’s work, in the opinion of Maldacena. This question has kept physicists busy for the last half century, including Hawking himself, who until his death searched tirelessly for a theory capable of unifying general relativity and quant...
14 de mar. de 2024 · 14 March 2024. Do black holes explode? The 50-year-old puzzle that challenges quantum physics. Stephen Hawking’s paradoxical finding that black holes don’t live forever has profound,...
- Davide Castelvecchi
7 de jul. de 2021 · A central law for black holes predicts that the total area of their event horizons – the boundary beyond which nothing can ever escape – should never shrink. This law is Hawking’s area theorem, named after physicist Stephen Hawking, who derived the theorem in 1971.
5 de abr. de 2024 · Stephen Hawking and Jacob Bekenstein calculated the entropy of a black hole in the 1970s, but it took physicists until now to figure out the quantum effects that make the formula work. By...
16 March 2022. By Pallab Ghosh,Science correspondent. EHT. Black holes form when massive stars run out of fuel and implode. Scientists say they have solved one of the biggest paradoxes in...
