AKLmfreak

AKLmfreak t1_ja6ep4a wrote

The appeal of a perpetual motion machine is free energy. If a perpetual motion machine was possible, you could harvest energy from it and it would never stop, and you’d have an endless supply of energy.

Since perpetual motion machines are not possible to make, there’s no point in trying to build something as close as possible to a perpetual motion machine because it will always slow down faster than the rate at which you pull energy out of the system.

The only modern practical application of that idea would be in a flywheel battery where you make a machine spin really fast and then try and keep it spinning with as little energy loss as possible before you extract stored energy out of the device.

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AKLmfreak t1_iw2lkjp wrote

TL:DR
“Rooftop Solar is Becoming more Accessible to People with Lower Incomes” = the median household income of owners of solar-equipped homes is down from $129,000 in 2010 to $110,000 in 2021.

So by “lower income,” they mean $110k is lower than $129k, not that actual low-income families might have a chance of affording it….

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