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elil17 commented on Data centers in space makes no sense   civai.org/blog/space-data... · Posted by u/ajyoon
matt-p · 5 days ago
(DTC) Datacentres take electricity and turn it into low grade heat e.g 60c water. Put them anywhere where you've either got excess (cheap) energy or where you can use the heat. Either is fine, both is great, but neither is both bad and current standard practice.

It's perfectly possible to put small data centres in city centres and pipe the heat around town, they take up very very little space and if you're consuming the heat, you don't need the noisy cooling towers (Ok maybe a little in summer).

Similarly if you stick your datacentre right next to a big nuclear power plant, nobody is even going to notice let alone care.

elil17 · 4 days ago
Well a few considerations:

- You have to size your cooling towers for your hottest hour. Doing this saves you no capital costs.

- You barely have to run the fans on your cooling towers in the winter because the air is so cold. So often this also won’t save you much operating costs.

- Already there is an essentially unlimited amount of so called “waste heat” from power plants and factories. Building district heating systems is extremely capital intensive, which is why this isn’t done more.

- As a municipality it’s just a horrible idea to make the heating system of your whole city rely on a random company continuing to operate (even worse if said company is in a potential bubble). This is why most district heating systems work with power plants - they already have the government involved in ensuring their continuing operations.

elil17 commented on Vitamin D and Omega-3 have a larger effect on depression than antidepressants   blog.ncase.me/on-depressi... · Posted by u/mijailt
ghusto · 11 days ago
The hate on antidepressants is not because they're not effective, but rather that they're abused by psychiatrists. Ideally, a professional will prescribe them as a necessary helper to becoming (more) mentally healthy whilst tackling the root cause. Most of the time however, it's more of a "here, take these indefinitely".

It's like if we took sleeping pills every time we had trouble sleeping. Having said that, I just realised I have the impression that's exactly what people do in the USA?

elil17 · 11 days ago
Wellbutrin can/should(?) be taken indefinitely and there's nothing wrong with that, it doesn't pose big long term health risks. As I understand it the issue is with SSRIs (they do pose health risks, obviously there's nothing wrong with taking them if it is a net positive for you).
elil17 commented on Ice Drives Unmarked Cars. This Public Database Tracks Their License Plates   theintercept.com/2026/01/... · Posted by u/JumpCrisscross
tokyobreakfast · 12 days ago
ICE drives rental cars so it's a matter of time before delusional superhero cosplayers attack a random guy in town for a shower curtain ring convention who happens to get the same car next.
elil17 · 12 days ago
Maybe ICE shouldn't use rental cars then.
elil17 commented on Flexible use of a multi-purpose tool by a cow   doi.org/10.1016/j.cub.202... · Posted by u/PlaceboGazebo
elil17 · 12 days ago
I feel that the tool lacked something in sophistication
elil17 commented on Maintenance: Of Everything, Part One   press.stripe.com/maintena... · Posted by u/mitchbob
elil17 · 19 days ago
Since when is Stripe a book publisher?
elil17 commented on You Can Just Buy Far-UVC   jefftk.com/p/you-can-just... · Posted by u/surprisetalk
SV_BubbleTime · 25 days ago
So… you can’t prove that the unit will not shift wavelength into a harmful range. However, I can prove that by not subjecting myself any others to claimed-harmless light that I can prove it will not become be realized to be harmful.

Cool! You missed peak covid hysteria. But, there are people that will never recover/realize. Like the type of lunatic that would subject everyone to one of these for a thanksgiving dinner in 2025.

elil17 · 24 days ago
You also can't prove that your normal lightbulbs won't magically start outputting harmful wavelengths. Best to live in the dark I suppose.
elil17 commented on You Can Just Buy Far-UVC   jefftk.com/p/you-can-just... · Posted by u/surprisetalk
gpm · 25 days ago
I actually read it as saying far UVC is probably carcinogenic for specific areas of your body (lips, maybe eyes).

I don't know if that's true, but it's what GP suggests to me.

elil17 · 25 days ago
That is not true. It can cause possibly eye irritation but animal trials have shown that it is not carcinogenic even to mucus membranes, eyes, and thin-skinned areas.
elil17 commented on You Can Just Buy Far-UVC   jefftk.com/p/you-can-just... · Posted by u/surprisetalk
bddbbd · 25 days ago
> Many people have been exposed to a lot of far UVC and nothing bad has happened to them. > > Looking right at it might not be good for your eyes. > > I feel confident for myself that far UVC is safe.

This is dangerous misinformation. Like any toxic, it's the Dosis that kills

There are very powerful far UVC products available which will give you sunburn on your skin in a couple of seconds

Somebody blasting UVC in a room of people is crypto monkey level of stupid

elil17 · 25 days ago
The person who blasted the crypto people with UV was not using far UVC.

Lots of "toxic" things are beneficial for public health. I'm sure you could poison yourself with soap but we put it in every bathroom.

Like with soap, it does not seem plausible that you could unintentionally harm yourself with far UVC lights.

elil17 commented on You Can Just Buy Far-UVC   jefftk.com/p/you-can-just... · Posted by u/surprisetalk
DannyBee · 25 days ago
Ignoring people, what sort of effect does it have on materials (plastics, etc)?

The only studies i can find suggest this is an issue. For example:

https://www.mdpi.com/2076-3417/13/7/4141

  The results of the study showed that far-UVC irradiation causes significant color degradation (∆E00 >5) in all the polymeric materials tested, after 290 J/cm2 radiant exposure. In addition, significant changes in mechanical properties were observed when evaluating elasticity modulus, elongation at ultimate strength, elongation at break, and tensile strength. A particularly large decrease in elongation at break (up to 26%) was observed in fiber-reinforced composite materials.

Is there anything that suggests this will turn out okay?

I don't think "stop using polymers in any place where far-uvc may exist" would fly. So it's cool that we've made something that isn't going to hurt humans, but if it destroys the stuff humans depend on, not sure that works either?

I also don't think the world is going to move to UV-stable polymers for everything just to make far-UVC work (in some cases this isn't even possible). We almost always just make things more UV-resistant instead of UV-stable.

elil17 · 25 days ago
Yes, it may not be good. However, that study used thin material samples - and those are particularly vulnerable to UV. Thicker materials are more resistant because the UV doesn't penetrate into them.

If you want to deploy UV in a specific space (think conference room or hospital ward), I don't think the problem is that hard. There are coatings you can put on top of existing plastics which protect them from UV light. However, I imagine that customer education around managing risk to plastics is going to be a key issue for UV companies if they are to succeed.

elil17 commented on You Can Just Buy Far-UVC   jefftk.com/p/you-can-just... · Posted by u/surprisetalk
JoshTriplett · 25 days ago
It doesn't have to be, but you can avoid any concerns about looking into it or affecting the light quality in the room by doing so.
elil17 · 25 days ago
If you were going to duct it then why wouldn't you just use regular UVC? Much cheaper.

u/elil17

KarmaCake day7274July 25, 2016View Original