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Apple iPhone 15 relegated to USB 2.0 unless you buy the Pro
  • I had a very quick check and I think iPads use an external chip for USB 3 - and there may just not have been space on the iPhone’s logic board for that. I think you’d have to judge it next year - since the base models seem to be using last year’s pro chips - if the base model doesn’t support 3.1 speeds then, something fishy is happening

  • Incandescent light bulbs are officially banned in the U.S.
  • I think to update the string of lights you’d need to change transformer. Household bulbs have a driver in the bulb that converts the 230V to the ~12V the bulb uses. But for that string of lights, they’d need to get an electrician (or someone who knows what they’re doing)

  • A quarter of Brits want a ban on fake grass
  • I have one because we have too much shade to grow grass. We have a 3 storey 60s house and a small, north facing garden. That said only one brand was recyclable at the end of its life, which is a shame

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  • What’s people’s thoughts on these for a new build that won’t connect to the gas grid. Electric underfloor heating is almost 100% efficient, cheap, doesn’t need plumbing or radiators, and incredibly easy to zone rooms. But these are 300-400% efficient

  • Apple @lemmy.ml Jacobp100 @lemmy.ml
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    Reddit @lemmy.ml Jacobp100 @lemmy.ml
    Reddit claiming they weren’t recovering deleted posts

    I’m not sure if it’s a coincidence, but I raised a case with the ICO in the UK, and today they got back to me asking for all my communication with Reddit. Also today - after a month of silence - Reddit also emailed me with this

    If you’re in the UK and had been affected by posts being restored, I’d recommend contacting the ICO. It takes less than 5 minutes

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    Is MVHR a scam?

    I was wondering about the physics for mechanical ventilation with heat recovery. My understanding is that it's a passive system that has a head exchanger formed of many thin layers of a metal (presumably aluminium) which then alternate airstreams entering and leaving a house to heat up the incoming air

    The diagrams you'll look at will show an example like it being 0º outside and 20º inside, then after the heat exchange, it heats up the incoming air to 18º

    Is this not bad science? The pressure of the house has to remain constant, so the incoming volume of air has to equal the outgoing volume of air. At best - if the air had infinite time to exchange heat, the best you'd achieve is 10º for the incoming air.

    In the real case, I'd assume your heat exchanger would reach 10º, and the incoming air would interact with it for at most a few seconds. I just can't see any real heat transfer happening here

    What's your thoughts? A scam, or something that has actual benefits?

    Edit - I've left the original post in tact - but I did find an answer. It's a real phenomena called countercurrent flow/countercurrent heat exchange. It's very important that the flows are in opposite directions - if they're not, you'll just reach the equilibrium temperature. But when they flow in the opposite directions, it is possible exchange nearly all the heat. The phenomena also shows up in nature - ducks have a countercurrent heat exchange system in their legs so the are able to recover heat losses from their feet being in water

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    InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)JA
    Jacobp100 @lemmy.ml
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