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Cake day: July 4th, 2023

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  • ByteJunk@lemmy.worldtoScience Memes@mander.xyzboiling water again
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    5 hours ago

    True, but that’s just one part of the process, and it’s not comparing to the initial energy in the source fuel.

    If nothing else, there’s an absolute efficiency limit from Carnot’s theorem, but in reality it’s much lower, even for the most modern and efficient gas plants, the limit seems to be ~60%, and for nuclear or coal, it’s even lower at around 30-40%.



  • I’m not disputing what the current gold standard is, I’m looking for theoretical possibilities.

    When you say heat, in fusion, most of the energy would be a neutron moving really fast, right? It sucks that it doesn’t have a charge because then it would be really easy, but there’s options here if we get creative.

    Maybe there’s some sort of material yet to be invented that can be slapped by a neutron and “deformed” in a way that causes electrons to shift/make holes and exploit that to make electricity.

    And that free neutron will eventually decay into a proton and electron, and those have a charge, so if we keep them going around a loop until that happens perhaps we could harness it.




  • ByteJunk@lemmy.worldtoScience Memes@mander.xyzboiling water again
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    12 hours ago

    I refuse to believe this.

    You’re telling me that Humanity is able to understand what goes on at the heart of stars, and is on the brink of being able to harness that power (“Soon TM”), and the best we can come up with is a big tea kettle? I’m not buying it.

    There’s got to be a better way of capturing all that energy - like, solar panels but for other types of radiation? Or if that’s not possible because wavelengths or something , maybe make something glow and use normal panels? Or like, can’t we take a particle accelerator and flip it around and pull energy from the particles that go zooming?

    I’m sure there’s a reason why all of that is hard, but surely not impossible?






  • A well organized drawer or cabinet should still be O(1). It takes at least 2 more steps, assuming you don’t leave them open all the time, but the number of operations doesn’t change depending on the number of clothing items you need to retrieve.

    A pile of clothes is faster, but only for a small number of items. As the number of articles pile up, they hide older items and need to be pushed side before the intended article can be found and then retrieved. This is now O(N), and less efficient than just storing things in the proper place…








  • Have you seen the price of gas?

    Also, Iran has been striking at neighbouring countries, including UAE and Saudi Arabia, and not limited to the military. US owned, or related, assets are juicy targets.

    Logistics in the whole region is a hot mess, and holding 2 racing events with the size and viewership of F1 would not only be impossible to organise, but more importantly, do you really want to host such events in the middle of an active war zone and tempt fate?