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hbrav commented on A Cozy Mk IV light aircraft crashed after 3D-printed part was weakened by heat   bbc.com/news/articles/c1w... · Posted by u/toss1
elicash · 14 days ago
In what way is this like vibe-coding -- or do you just mean both are bad?

According to the report:

> The aircraft owner who installed the modified fuel system stated that the 3D-printed induction elbow was purchased in the USA at an airshow, and he understood from the vendor that it was printed from CF-ABS (carbon fibre – acrylonitrile butadiene styrene) filament material, with a glass transition temperature3 of 105°C.

https://assets.publishing.service.gov.uk/media/69297a4e345e3...

Isn't this simply a part that shouldn't have been allowed to be sold based on it being both faulty and also misleading?

hbrav · 14 days ago
Well how confident would you be that this part isn't exposed to temperatures above that glass transition temperature? It is installed near the engine.
hbrav commented on Solar's growth in US almost enough to offset rising energy use   arstechnica.com/science/2... · Posted by u/pseudolus
frankest · 22 days ago
Solar only works during the day. Datacenters need energy 24/7. Consumers who didn’t install solar with batteries will end up with higher prices.
hbrav · 22 days ago
Well they'll end up with higher prices at night. I wonder if we'll see a shift to energy-intensive processes being run during the daytime.
hbrav commented on A 1961 Relay Computer Running in the Browser   minivac.greg.technology/... · Posted by u/vaibhavsagar
analog31 · a month ago
And discrete transistors. Now that my curiosity is piqued, I found this nice timeline:

https://www.computerhistory.org/timeline/computers/

It looks like transistorized computers were dominant at the point when integrated circuits were introduced.

hbrav · a month ago
And before that with gears! (With limited success.)
hbrav commented on Genergo: Propellantless space-propulsion system   satcom.digital/news/gener... · Posted by u/maremmano
hbrav · a month ago
This article is quite frustrating, since all that it really tells me is that their system "generates thrust without using any propellant and without expelling reaction mass, by directly converting electrical energy into thrust through controlled electromagnetic impulses".

That's rather non-specific. My first thought was that they're using photon momentum, but thinking about that a little harder rules it out. The ratio of energy to momentum doesn't change with any properties of the photon (they're both proportional to frequency) so there's nothing to really develop there: so long as you waste very little power as heat, you might as well be shining a well-collimated flashlight.

Options 3 and 4 from [this paper](https://arxiv.org/pdf/2510.21743), _magnetic sails_ and _solar sails_, seem more promising. Is that what Genergo are doing? I have no idea. The article doesn't tell me.

hbrav commented on IP blocking the UK is not enough to comply with the Online Safety Act   prestonbyrne.com/2025/11/... · Posted by u/pinkahd
nine_k · a month ago
If you operate a website outside UK and that's it, you may not care. But if you offer paid servies, collect money from UK citizens, you must have a business representation in the UK, which is bound by UK laws, can be fined, dragged to a court, etc. If you have this vulnerability, or you don't but your holding company has other web properties that do, the UK government has a way to make you listen and comply.
hbrav · a month ago
> But if you offer paid servies, collect money from UK citizens, you must have a business representation in the UK

I don't think that's true at all. You be taking payment by credit card, which doesn't require you to have any local presence.

I think your bigger risk is that you get a judgement made against you by a UK court, which a court that has jurisdiction over you is willing to enforce. I'm not sure under what circumstances that is the case, but I believe that it being the case with libel judgements has been an issue for a while (since plaintiffs can 'forum shop').

hbrav commented on IRS halts Direct File and points to other free services   wsj.com/politics/policy/i... · Posted by u/anigbrowl
t1234s · a month ago
They need to end the IRS. Normal working people shouldn't be held hostage by having to comply with a federal agency. Companies shouldn't be forced to act as tax collectors when paying salaries.
hbrav · a month ago
How, if at all, would you fund the federal government?

Are you suggesting you don't think the current way taxpayers interact with the IRS is very functional, or you'd like to actually get rid of having any agency responsible for federal tax collection?

hbrav commented on Are touchscreens in cars dangerous?   economist.com/science-and... · Posted by u/Brajeshwar
nothrabannosir · 3 months ago
I would support legislation which disables the touch screen when the passenger seat is unoccupied and the vehicle is in motion.

But I admit I’m being selfish: I don’t drive but share the road with people who do.

hbrav · 3 months ago
Mazdas do lock the screen when in motion.

Actions can be accomplished using a 'big knob' button that can be turned or pressed. The driver can still distract themselves, but I believe it's to a lesser extent that the touch screen.

hbrav commented on DOGE Put Critical Social Security Data at Risk, Whistle-Blower Says   nytimes.com/2025/08/26/us... · Posted by u/jbegley
nxobject · 4 months ago
SSA's CIO "accepts all risks" - but what does that actually mean in practice? Is he going to be held accountable?

> The agency’s chief information officer Aram Moghaddassi approved the move to copy the database to the agency’s cloud, saying he “determined the business need is higher than the security risk” and that he accepts “all risks” with the project.

hbrav · 4 months ago
This is one of my pet peeves: people saying they accept risk/responsibility that they don't have the ability to accept.

It's like co-signing a $1M loan when you only have $100 to your name.

hbrav commented on DIY Telescope Mods That Transformed My Astrophotography   youtube.com/watch?v=Efmzr... · Posted by u/karlperera
madaxe_again · 5 months ago
My first bahtinov mask I just made out of some scrap cardboard - worked a treat.

Now I just use an autofocuser (pegasusastro focuscube), which I find gives identical results, and didn’t cost the world either (€130) - plus has the benefit that as the scope cools down through the night I’m not constantly having to stop imaging to refocus.

hbrav · 5 months ago
I also did my first one out of cardboard!
hbrav commented on Nearly 3 out of 4 Oracle Java users say they've been audited in the past 3 years   theregister.com/2025/07/1... · Posted by u/rntn
robotnikman · 5 months ago
I'm reminded again of the meme of the Oracle org chart

https://palisadecompliance.com//wp-content/uploads/2013/11/o...

hbrav · 5 months ago
Mighty bold of them to assume that most of engineering would be above most of legal.

u/hbrav

KarmaCake day514February 18, 2021View Original