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Physicists in Israel have devised a black hole analogue only, rather than being a gravitational fortex that doesn’t allow light to escape, this particular object is a sonic black hole that doesn’t allow sound waves to escape. In the process, the researchers measured the long-theorized Hawking radiation, with important consequences for physics. A black hole is a region of spacetime where gravity pulls so strongly that even light cannot get out once it crosses a point of no return, known as the event horizon but you probably knew that already. What may be new to you is that almost 50 years ago, Stephen Hawking proposed a more nuanced view whereby black holes can also generate light.

Jeff steinhauerStephen hawkingAmos oriTechnion physics departmentIsrael institute of technologyTechnion israel instituteBose einstein condensatePhysics departmentஜெஃப் சிடேன்ொஊேர்ஸ்டீபன் ஹாக்கிங்ஆமோஸ் ஓரிதொழில்நுட்பம் இயற்பியல் துறைஇஸ்ரேல் நிறுவனம் ஆஃப் தொழில்நுட்பம்தொழில்நுட்பம் இஸ்ரேல் நிறுவனம்போஸ் ஐன்ஸ்டீன் மின்தேக்கிஇயற்பியல் துறை