Topic: Physics
Researchers at CUNY ASRC recreated black hole energy extraction using a device that simulates extreme rotation. They showed that waves can be amplified and extract energy from synthetic motion, opening new possibilities for studying extreme physics and developing technologies.
More than 50 years ago, physicist Sir Roger Penrose proposed an idea: it might be possible to extract energy from a rapidly spinning black hole. In his concept, a particle entering the black hole's ergosphere could split into two. One fragment would fall into the black hole while the other escaped carrying away more energy than the original particle. Later, physicist Yakov Zel'dovich expanded on this idea, predicting that waves interacting with an object rotating fast enough could also gain energy and become amplified.
Now, researchers at the Advanced Science Research Center at the CUNY Graduate Center (CUNY ASRC) have demonstrated an experimental approach inspired by those long-standing theories. They built a radio frequency device whose properties are rapidly changed across both space and time. This carefully engineered system creates the illusion of ultrafast rotation, reaching effective rotational speeds far beyond what conventional mechanical systems can achieve.
The researchers set out to answer a fundamental question: Could electromagnetic waves interacting with a completely stationary device behave as though they were encountering an object rotating at ultrafast speed and draw energy from that synthetic motion? To investigate, they constructed a ring of electronic resonators whose properties were rapidly adjusted in a carefully synchronized sequence. Although the hardware itself never moved, these timed changes generated a traveling pattern around the ring.
As a result, the electromagnetic waves effectively experienced the system as though it were spinning at extraordinary speed. 'Waves with the appropriate rotational characteristics extracted energy from the system and became amplified, reproducing the essential physics of the Penrose-Zel'dovich process,' said co-lead author Hady Moussa.
Why It Matters
This breakthrough has implications for advances in fundamental science and technology, such as wireless communications, optics, photonics, and quantum technologies. It also opens new possibilities for studying extreme physics that would be impossible to study directly.
Key Facts
- Physicists Sir Roger Penrose and Yakov Zel'dovich proposed the idea of extracting energy from a rapidly spinning black hole over 50 years ago.
- Researchers at CUNY ASRC recreated black hole energy extraction using a device that simulates extreme rotation.
- The experiment used a radio frequency device to create the illusion of ultrafast rotation, reaching speeds far beyond conventional mechanical systems.
- Electromagnetic waves interacting with a stationary device can behave as though they were encountering an object rotating at ultrafast speed.
- This breakthrough has implications for advances in fundamental science and technology, such as wireless communications, optics, photonics, and quantum technologies.
Key Terms
- Ergosphere
- A region around a rotating black hole where spacetime is dragged along by the object's rotation.
- Metamaterials
- Engineered materials that are designed to control how waves propagate.
Implications
This breakthrough has implications for advances in fundamental science and technology, such as wireless communications, optics, photonics, and quantum technologies. It also opens new possibilities for studying extreme physics that would be impossible to study directly.
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