A trio of physicists from Princeton University, CIT's Jet Propulsion Laboratory and Spectral Sensor Solutions, all in the U.S., is proposing the possibility of generating electricity using energy from the rotation of the Earth. In their study, published in the journal Physical Review Research, Christopher Chyba, Kevin Hand and Thomas Chyba tested a theory that electricity could be generated from the Earth's rotation using a special device that interacts with the Earth's magnetic field.
Over the past decade, members of the team have been toying with the idea of generating electricity using the Earth's rotation and its magnetic field, and they even published a paper describing the possibility back in 2016. That paper was met with criticism because prior theories have suggested that doing so would be impossible because any voltage created by such a device would be canceled as the electrons rearrange themselves during the generation of an electric field.
The researchers wondered what would happen if this cancelation was prevented and the voltage was instead captured. To find out, they built a special device consisting of a cylinder made of manganese-zinc ferrite, a weak conductor, which served as a magnetic shield. They then oriented the cylinder in a north-south direction set at a 57° angle. That made it perpendicular to both the Earth's rotational motion and the Earth's magnetic field.
Next, they placed electrodes at each end of the cylinder to measure voltage and then turned out the lights to prevent photoelectric effects. They found that 18 microvolts of electricity were generated across the cylinder that they could not attribute to any other source, strongly suggesting that it was due to the energy from the Earth's rotation.
The researchers note that they accounted for the voltage that might have been caused by temperature differences between the ends of the cylinder. They also noted that no such voltage was measured when they changed its angle or used control cylinders.
The results will have to be verified by others running the same type of experiment under different scenarios to ensure that there were no other sources of electricity generation that they failed to account for. But the researchers note that if their findings turn out to be correct, there is no reason the amount produced could not be increased to a useful level.
Website: International Research Awards on High Energy Physics and Computational Science.
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