echodot
@echodot@feddit.uk
- Comment on But think of the landlords! 19 hours ago:
That’s terrible. Use the nide grabber and put that right. Wobbling all over the place right now.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
It took about a century to get decent electric cars so I stand by my statement. It may no longer be true in the 22nd century, but there are fundamental issues with this technology that have not been addressed. I can’t imagine where likely to see solutions anytime soon, mostly because I don’t think there are solutions, I just don’t think the technology works.
Pressure change refrigeration is just so much more efficient. The light on your refrigerator consumes more energy than the refrigeration process, so it’s not like there’s even a massive impetus to make the system even more efficient because it barely uses energy as it is.
Where this technology might come in handy is where size is a severely limiting factor. Such as on satellites or small drones.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
No one’s saying the technology isn’t interesting just at the article is rubbish.
Who wrote that headline anyway, the headline should have been scientists have created sub-zero solid state cooling, but the writer somewhat arbitrarily decided that this was about environmentalism which has got nothing to do with.
The scientists are not even making the claim that this is a necessarily viable technology, it’s just a thing that they’ve managed to achieve.
I’m surprised the article writer didn’t do the usual thing that science “journalists” tend to do, which is claim that it kills cancer. So we should be thankful for small mercies.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
What through a wormhole?
There’s a lot of air between the refrigerator and space I think it might get in the way
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
I’m asking what sauce you have that says that they are more efficient than refrigeration systems because everything I find says the opposite.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
Refrigeration already is cheap. The problem a lot of places have is not an inability to afford a refrigerator it’s no energy to power the refrigerator. This technology does not into address that problem. In fact it probably worsens it because this technology is less efficient in terms of power consumption.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
That’s reflection of external heat not removal of internal heat. Refrigeration requires effort and therefore energy.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
That’s also impossible. Anything that does work generates heat, it’s a fundamental law of thermodynamics.
There is no such thing as a thermally neutral mechanism, because all energy is eventually thermal. You can reflect heat, as in you can prevent heat from being added into a system via thermally neutral mechanisms but you can’t remove it without exerting energy.
- Comment on A new cooling technology freezes food without warming the climate 1 day ago:
What sources?
The article doesn’t list any. All it says is they reached a cooling temperature of -12°C, but has no information on the energy used to achieve that.
- Comment on A new cooling technology freezes food without warming the climate 2 days ago:
They are not new technology the idea has been around since at least the 1980s. There is a reason we don’t use them and it’s because they are mechanically complicated and inefficient. Those in terms of power use and maintenance requirements.
However with the move to renewable energy maybe that efficiency limitation isn’t as much of a problem as it used to be. Especially if it means you can get away from toxic compounds.
Although I have never seen a commercial grade implementation of the technology. It’s always just been demos that don’t really achieve enough cooling to be anything other than a curiosity.
- Comment on A new cooling technology freezes food without warming the climate 2 days ago:
I don’t think shape change materials are all that efficient. The problem being is you still need some mechanism to compress the material again, which obviously uses energy. As you say their main advantage is that they don’t use traditional refrigerants. But the trade-off for that is that they are mechanically more complicated and probably for any given amount of cooling will require more electricity.
You can trade those off with renewable energy sources of course so it may still be worth it but technically they are worse efficiency than traditional vacuum pumps.
- Comment on A new cooling technology freezes food without warming the climate 2 days ago:
That’s thermodynamically impossible but ok.
When you cool something you take heat energy out of it you have to do something with that heat energy you can’t just delete it.
- Comment on Slay Girl 2 days ago:
Mallard ducks in particular seem to take the view that as long as someone’s looking after the ducklings, it doesn’t really matter whose is whose.
- Comment on What's it like living in 2? 2 days ago:
It’s a big country, lots of cultural differences. Unfortunately the education system is pretty bad here.
The only country name we’ve learnt to spell is Portugal. We’re pretty bad at all the others.
- Comment on You don't say. 3 days ago:
I feel like that would be a fairly normal response. Elevators are not typically found underwater so finding yourself in an underwater elevator is not going to be a particularly reassuring experience.
Apart from anything else a cube is not a particularly good shape for holding back water pressure
- Comment on Many parents cab probably relate 3 days ago:
Is it open source?
- Comment on Many parents cab probably relate 3 days ago:
We don’t know this for sure, maybe the dad just split in half.
- Comment on Many parents cab probably relate 3 days ago:
In my industry the candy bowl is usually attractive women in very short shorts (unimaginative, but it works). Although to be honest, free candy may work just as well, and it’s probably cheaper.
- Comment on Many parents cab probably relate 3 days ago:
How many dioramas do you create in an average year
- Comment on Majority of CEOs report zero payoff from AI splurge 3 days ago:
Yeah.
In their natural state humans are immortal everyone knows that
- Comment on Driving test cheating soars with use of headsets and impersonators 3 days ago:
They definitely already check this. When I took my theory driving test they practically made me take my shirt off to prove that I didn’t have any cheating items.
I don’t know what the point is anyway since it’s super easy to pass.
- Comment on Driving test cheating soars with use of headsets and impersonators 3 days ago:
When I was a kid back in the 80s the shop owner never even bothered to check. He just sold us the alcohol.
It’s kind of bad really thinking about it, but no one used to check and no one used to care. I don’t even remember my parents being particularly bothered about it. I’m sure they would have been if we’d actually got in trouble for it but we used to just go home and drink quietly so no one official ever found out.
- Comment on At Davos, NVIDIA, Microsoft CEOs deny AI bubble 3 days ago:
Even if you wanted to you can’t use the AI these guys want because it doesn’t work.
- Comment on QWOP 6 days ago:
I’m now older than both my parents were when I was born. The complaining about the lack of grandchildren has already started.
Is not in is it? Society won’t let me stay up and play Xbox until midnight anymore, I’m expected to go to work in the morning.
- Comment on Council removes almost 1,000 flags from Derby streets 6 days ago:
I would have a bit more respect for them if they actually went to the effort of tying them at the top of the lamp post. Rather than standing on their mate shoulders.
- Comment on Council removes almost 1,000 flags from Derby streets 6 days ago:
I’m guessing you’re not old enough to remember the white nationalists using it to threaten people. People are uncomfortable with the flag flying because it reminds them of those people, especially because the very same people are the ones putting them up now.
- Comment on Bluesky just verified ICE 1 week ago:
Yeah I really don’t see why everyone is upset about this. Should be upset that ICE exists but not but they have an official bluesky account. This is basically the same as going “yep they’re real”.
This is just more weird Mastodon elitism.
- Comment on Meta is closing down three VR studios as part of its metaverse cuts 1 week ago:
My man what are you on they sold out to Meta, they 100% knew what they were getting into, and have been well compensated for it.
- Comment on Meta is closing down three VR studios as part of its metaverse cuts 1 week ago:
I mean there’s always be vrchat, Which is basically what meta was trained to do but actually works.
- Comment on Meta is closing down three VR studios as part of its metaverse cuts 1 week ago:
Well they gave it their best shot. It was literally impossible for them to have produced a more compelling product. That would have required skill and talent