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Saturday, March 29th, 2025
Time |
Event |
5:34p |
Scientists May Have Discovered How To Extract Power From the Earth's Rotation Long-time Slashdot reader Baron_Yam writes:
No more burning fossil fuels, playing with fissile material, damming rivers, erecting wind mills, or making solar panels. All of our energy needs could potentially be supplied by the angular kinetic energy of the Earth — and because of the mass of the planet, doing so would slow its rotation down by a mere 7ms per century. [Which is similar to speed changes caused by natural phenomena such as the Moon's pull and changing dynamics inside the planet's core."]
Normally this would be considered impossible as the Earth's large and uniform field does not induce a current in conductors, but researchers believe that a hollow cylinder of manganese, zinc and iron can alter the interaction with our planetary magnetic field and allow the extraction of energy from it. So far, the results are positive but still below the level where they cannot be explained by multiple possible causes of experimental error. Further research is required to confirm the effect.
"The effect was identified only in a carefully crafted device and generated just 17 microvolts," reports Scientific American, "a fraction of the voltage released when a single neuron fires — making it hard to verify that some other effect isn't causing the observations."
But if another group can verify the results, the experiment's lead says the next logical step is trying to scale up the device to generate a useful amount of energy.
Read more of this story at Slashdot. | 7:34p |
Why a Lost Cellphone Forced an Airplane to Turn Around in Mid-Flight Last week an Air France flight to the Caribbean had to turn around and return to Paris, reports the Washington Post, "after a passenger could not locate their cellphone."
Because of fears that an unattended cellphone could overheat — and because the passenger and crew couldn't find the phone — the Boeing 777 turned around off the coast of France "and returned to the airport, according to the flight-tracking service FlightAware. It landed back where it started a little more than two hours after taking off, with 375 passengers, 12 cabin crew and two pilots on board..."
It was the airline's second Caribbean-bound flight to turn around because of a phone since early February as the aviation industry grapples with the risk of fires sparked by lithium batteries... Air France did not say where on the plane the phone was lost — or where it was ultimately located. "After checks by the maintenance teams, the device was found and the aircraft was able to take off again quickly," the airline said in an unsigned statement. "Air France regrets this situation and reminds that the safety of its customers and crew members is its absolute priority." The plane made it to Guadeloupe, a French overseas territory, about four hours later than scheduled...
The articles notes that U.S. air passengers "are required to keep vape pens and spare lithium batteries, such as portable chargers, in the cabin at all times, according to the Federal Aviation Administration. The items are not allowed in checked bags..."
The agency — which handles about 16.4 million flights per year — "says it is aware of 85 lithium battery air incidents involving smoke, fire or extreme heat last year."
Read more of this story at Slashdot. |
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