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As part of a "standard" rooftop solar install in Ireland, one gets a hot water diverter to make use of surplus energy. So our hot water cylinder is usually hot these days at zero cost.

We had to get our bathroom re-done this year for accessibility reasons, but I pushed for a shower that could make maximal use of this free heat: immersion fed, no pressure pump, trigger-equipped showerhead. And I'm so much happier to take a shower now that it's not drawing 7-10kW and massive amounts of water. The trigger is really nice to use. Highly recommended.

Kevin boosted

@wim_v12e @chorist
“Taking into account the carbon cost of both operation and production, computing would be responsible for 10 GtCO₂e by 2040, almost 80% of the acceptable CO₂ emissions budget”


Is it just me or is the blurb on Lipton's mint tea - "Perfect for a deliciously relaxing moment as the day draws on" - deeply melancholic?

The maintenance and landscaping of parks in Dublin is usually good, which makes it harder to believe the awful waste that's happened in Deer Park near where I'm from: two dozen saplings planted very prominently along the park's southwestern edge and then allowed to perish from lack of water. What a pity

I predict the usage "text" for "texted", which I hear all the time around me, will make it into print in a few years. E.g. "I text him last night"

Whoa, the YAML spec section on indentation isn't the Mae West. "Indentation is defined as a zero or more space characters at the start of a line." Huh? Also check out the indistinguishable pink and lilac colours which are meant to mark different parts (in Example 6.1)

Would be nice if web form fields with their own validation could supersede the red squiggly line from the browser's spellcheck. It's annoying to have say a correct IBAN marked wrong in this way. But I guess the spell check is not part of the HTML standard and so the validation (which also has no standard, it's whatever people come up with in JS, right?) can't talk to it

"Beethoven was black" is a fairly niche Afrocentric talking point/conspiracy, but I do actually hear hear good classical music as black music... the good shit *is* head-nodding

"Please rate the quality of this call" - "3/5, good vibe and some interesting points but there's only so much you can enjoy talking to your manager"

For all the thousands of live-in-studio music videos released, it's still rare to see camerawork that doesn't distract. I think the level of craft of TV professionals hasn't yet disseminated into the freelance world

When you're listening to a dance mix and realise that sick sound effect you've been enjoying for the last half minute is like a plane or a lawnmower outside

xkcd is a smart and warmly reassuring disseminator of nerd culture, but is it fair to say it hasn't been funny in a long time?

Shout out to my mother who makes nice soda bread - and she's not even Irish!

That warm glow when you tidy up tangled laptop power cables

The €4 shaving oil I get seems to have been replaced (in the four pharmacies i tried) by a €16 option. How tiresome! Maybe it's olive oil time

Kevin boosted

I had a look at the implications of the Facebook Metaverse on emissions from computing. It is scary.

For the ideal VR experience, you need a network bandwidth of 1.6Gbit/s. To watch an HD video at 4K currently, you need 25Mbits/s; 8K would be 100Mbits/s.

So VR requires 64x more bandwidth than 4K video!

Ignoring the infrastructure emissions, purely running this from a cloud data centre effectively means a 64x increase in energy consumption and therefore in carbon emissions.

When I researched my talk about Frugal Computing, I did not discuss VR, as none of the studies I referenced considered it. But with a giant like Facebook behind it, VR might become a very considerable part of our lives.

That would be a disaster: already, emissions from computing are dominated by video. VR will make this many, many times worse.

The only bright side is that with current technologies, there is not enough electricity in the world to power this ideal-experience VR revolution.


Kevin boosted

HP, 1980s: Our new 8.5-digit voltmeter measures down to nanovolts and support your Josephson quantum voltage calibration.

HP, 2020s: Printer ink subscription plans!!!

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Does it indicate a distribution problem that thousands of rock, jazz and funk bands out there struggle to get their music heard at all, while mood playlists ("beats to study to", etc.) easily rack up views? Or do people actually prefer their background music computer-produced

Dreamt of a party - I was taking orders for a beer run. Good to see my dream self is sound like that

Kevin boosted

Slow Fourier Transform

> The Mader–Ott Harmonic Analyzer (MOHA) is a high-precision mechanical instrument for determining the coefficients of a Fourier series.
> With the reactivation of the mechanical harmonic analyzer, we have been able to reproduce earlier results that showed that at least the lowest 25 Fourier coefficients [..]
> Considering the fact that the analysis of the first 10 coefficients of our test signal took on average about 2 hours, the title of this contribution seems justified. #retrocomputing

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