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Cake day: September 15th, 2023

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  • Revonult@lemmy.worldtoxkcd@lemmy.worldxkcd #3038: Uncanceled Units
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    6 months ago

    It’s because the times aren’t the same. Maybe same unit but different context so they can’t be canceled.

    It’s like saying you work 8 Hours/day (Eight hours per day). Both are units of time, but their context is different and their combination forms a new meaning beyond the units.

    1 KWh is using 1KW for one hour. Because of demand pricing the time you use that KW is important. Like in terms of energy grid using a whole ton of power for one minute vs same total over a long time is different and important dispite being the same amount of energy.

    Edit: some phrasing


  • Could be steel rims. Engine blocks are typically Aluminium which have about half the melting point of Steel at only around 600C depending on alloy, which is pretty low in the metals world.

    Rims are also typically Aluminium but they are clearly not as melted so could be steel rims or the fire was not as concentrated there (core of the car burned out while the outside was bit cooler)

    Edit: The molten material could be from even lower melting point Al alloys (High in Silicon or Magnesium). Cars also can use some high Magnesium alloys that can have even lower melting point.









  • I looked more into fires and battery replacement and agree with your stats, much appreciated for the info.

    However, I never said it swappable would be faster for expanding. I said it was safer and allow for battery integrity evaluation. I agree the ideal solution would be chargers in homes as long as battery health and saftey are reasonable which they already reaching that point.

    I see alot of talk in these threads about how bad it would be to make infrastructure and need to invest. But our current infrastructure didn’t just show up. I bet when the first cars came out people with horses said the same thing. Thinking how much it would cost to build all these gas stations and refineries. Investment will have to happen and EV is the future. Obviously home chargers are cheaper and again the ideal solution as technology advances and the grid can keep up.






  • I think swappable batteries could be a good solution to fires and probelms seen with long term battery health. Like if batteries were smaller and you swap it out rather than charging they could be inspected before being redistributed. In an ideal situation the cost of purchasing a battery would be removed from the vehicle price and shift to a subscription/interchange system. It could help consumers if their battery goes bad by not needing to buy a completly new one and prevent fires. Unfortunately, everything is terrible and I imagine this would inevitably turn to some kind of scummy, overpriced, preditory system. I am not sure if damage caused by batteries is enough to justify such a program but I think insurance companies and governments have or will look into it.