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Energy-Stealing Zel’dovich Effect Confirmed Using Electromagnetic Fields 50 Years After Being Proposed

IFLScience
Summary
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80% Informative

A 50-year-old idea about the Zel’dovich effect has been tested by physicists in the lab.

In 1969 , British physicist Roger Penrose suggested that energy could be extracted from black holes by lowering an object into the ergosphere and allowing it to accelerate the object, stealing some of the black hole's energy.

The idea has links to the doppler effect, which can make light appear red or blue depending on how the emitting object is moving relative to us.

To test the idea, the team bounced sound waves off a spinning disc, and listened for a shift in frequency indicating that energy had been gained from the rotation.

VR Score

77

Informative language

74

Neutral language

69

Article tone

informal

Language

English

Language complexity

65

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not offensive

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not hateful

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not detected

Time-value

long-living

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