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Cake day: June 14th, 2023

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  • You can use superconductors to create Josephson junctions, which can be used for standard logic operations (but also useful in quantum computers). These junctions are much more efficient and much faster than transistors.

    This particular superconductor will not be useful for transmitting power because the effect breaks down at very low current limits in this material, but it will be very useful for studying superconductors.

    So contrary to what you said, this will in fact not be useful for power transmission, but could be useful for CPUs and GPUs, and could lead to computers that are hundreds or thousands of times faster and more efficient than what we have today.

    To be fair this material may never see a practical use though.



  • Yes, I don’t think people realise the scale of production involved. We’re currently producing about 8500 TWh of power with renewables annually (nuclear is about 2600 TWh), and adding about 585 TWh of renewables per year (this is steadily increasing). A typical nuke plant generates about 8.5 TWh annually, so we would need to be building 68 new nukes every year to keep up with renewables (at current renewable numbers). The cost and construction time is massively prohibitive for nuclear, uranium mining is pretty dirty and there’s some downsides of nuclear waste at present. Yes, there’s some emerging tech but we won’t be building many of those for some time to come.

    It seems unlikely nukes are a practical path to any significant contribution to new generation required and they will continue to fall behind. They can help but they’re not the magic bullet many people seem to think. Solar, wind and hydro will dominate in the medium term. I think they will ultimately make way for geothermal to dominate, maybe via plasma deep drilling like Quaise or PLASMABit utilise to potentially make bores up to 20 km deep, which opens much of the world up to being suitable.

    Fusion may become practical in the next 20 years or so, but that will also be ludicrously expensive, so also unlikely to make a meaningful contribution in the medium term either.










  • Always prune the suckers and all the laterals if you want the best fruiting. That is, unless they are cherry tomatoes, in which case just let them go wild.

    You don’t want more than one growing tip if you want really great tomatoes.

    Edit: Most of the advice here is just terrible. Do what is proven by the pros. Rigorous attention to pruning laterals is the right way to go. People who say not to prune have probably never pruned properly so think what they do is OK. You need to do it every week before the laterals get too large or it affects plant growth. Just pinch them out with you fingernails as soon as they appear. Ignore the other advice. Thank me later.