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manarth

2,303 karma · joined February 17, 2013

Marcus. He/him. Audhd.
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manarth··on Two high-speed trains collide near Toledo, Spain
It's been reported that the automated system had failed, so trains were being routed and instructed manually.
manarth··on The Curse of Soldered RAM
Apparently the PC (well, the disk-drive) needed to be moved to the lowest level possible such as a basement, where the earth's magnetic field is strongest.

That way when it was formatted, you could take it upstairs and the weaker magnetic field meant the disk's magnetic structure was stronger so it could be read.

This also caused the early-days meme of computer geeks being "basement dwellers".

manarth··on SS United States to be sunk as largest artificial reef
There's hundreds of years (if not thousands) of shipwrecks, from which we can interpret their effect on the underwater environment.

Unless there are pollutants involved, the wreck is generally a net positive for biodiversity and provides an attractive area for marine life.

manarth··on SS United States to be sunk as largest artificial reef
Probably less useful for large-scale commercial fishers, due to the risk of the net(s) snagging on the ship.
manarth··on Satellites show some of the strongest evidence the AMOC is weakening
https://archive.is/KuWsx
manarth··on Prisoner loses challenge to an Australian state’s ban on inmates eating Vegemite
The explanation is that Vegemite's characteristics (high yeast content, viscosity and strong smell) can be abused to break other jail prohibitions.

The yeast could be used to brew alcohol, and the viscosity and strong smell could be used to hide drugs and misdirect sniffer dogs.

manarth··on Security advisory: Critical remote code execution vulnerabilities, update now
Log4J was nearly ubiquitous; not quite the full reach of Java, but deployed to a significant proportion of public-facing Java platforms and services.
manarth··on The United Kingdom generates less electricity per person than in the 1970s
Boiling water taps like Quooker and similar are pretty good.

There's a limit: you can fill a medium saucepan with boiling water, but large/industrial-kitchen pans will exhaust the boiling water and you'll need to wait for the next batch.

It's fine for general household use.

manarth··on France's supermarket fridges were vulnerable online for months
Air-gapping is a start.

Critical National Infrastructure should go further, as Iran found out with Stuxnet.

manarth··on Ask HN: Which books did you read at least twice?
And yes: Tolkien, Dune, Pratchett, Douglas Adams, Asimov/Foundation, McCaffrey/Pern, Janny Wurts, Raymond E Feist, and more recently Brandon Sanderson, Patrick Rothfuss, and Melissa McPhail (who sadly passed away, with the Pattern of Shadow and Light incomplete).
manarth··on Ask HN: Which books did you read at least twice?

    "With this ritual, I hereby summon autistic people to the conversation"
manarth··on The United Kingdom generates less electricity per person than in the 1970s
There's also this:

    > "The ULEZ camera had already been cut down"
The camera was already useless. Detonating an IED served no purposeful protest, and endangered property and lives.
manarth··on The United Kingdom generates less electricity per person than in the 1970s
They're referring to LEZ (Low Emission Zone) legislation where a fee is charged for vehicles which exceed a defined emission threshold.

In general, diesel vehicles are more likely to exceed the emission threshold.

manarth··on The United Kingdom generates less electricity per person than in the 1970s
Part of the ambition is to increase balancing services (such as battery storage) to reduce the reliance on big always-on generators or fossil-fuel-powered suppliers and increase the ability to leverage variable-output renewables like wind and solar.

One of the key challenges is electricity distribution, with a number of key transmission bottlenecks: a notable one is Scotland/England, where Scotland renewables generate more power than necessary, but not all of it can be exported to England as their isn't enough capacity across that transmission section.

Transmission capacity growth is now the key priority for the grid, with policies and plans optimised to address the bottlenecks in distribution.

manarth··on The United Kingdom generates less electricity per person than in the 1970s
Most British homes haven't been built to support AC. Retro-fitting a heatpump for heating is relatively straightforward, as the heating delivery mechanism (pipes to transmit hot water to wall-mounted radiators) is already in place.

Although you could pipe cool water through the radiators, it's an ineffective form of cooling compared to blown-air systems, and retro-fitting a blown-air system is much more costly than a heating-only heat pump.

manarth··on The United Kingdom generates less electricity per person than in the 1970s
Racism and immigration are the main topics which have recently generated violent protests.

Climate change and oil use have generated predominantly non-violent protests.

Palestinian rights have generated direct action protests but not riots.

Energy hasn't really been on the radar (except in the context of climate-change protests).

manarth··on Secret of Orange Cats Revealed After 60-Year Search
Only a ginger should call another person ginger.

https://www.youtube.com/watch?v=KVN_0qvuhhw

manarth··on Ask HN: What do you run on a $5 VPS that's worth keeping online 24/7?
+1 for LXCs.

I only started using them last week and have already deployed them across half my home-lab (replacing full-fat VMs and docker containers).

The tooling's not at the same level as Docker, but the efficiency makes up for the initial hassle.

manarth··on Ask HN: What do you run on a $5 VPS that's worth keeping online 24/7?
Thrift stores will often sell used DVDs for $1. No piracy involved, no copyright issues as it's a physical disk which can be legally sold on.

The "questionable" piece is ripping the DVD to a home media library to play via Jellyfin. Which might be fair use in some countries.

manarth··on British PM says it is 'clear' Russia interfered with Brexit vote
Are you able to share any examples of misinformation for this claim?
manarth··on British PM says it is 'clear' Russia interfered with Brexit vote
When it was a member of the EU, the UK had an opt-out for the Euro currency (as well as other accommodations).

It's likely that most of those accommodations would be a requirement for the UK to rejoin the EU.

manarth··on A Cray-1 supercomputer replica from 30 "obsolete" Mac Minis
It's the original housing and dimensions. 2012 Mac Minis were around 20cm × 20cm square × 3.6cm high
manarth··on House with 15m underground tunnels for sale for 300k
That hidden underground complex definitely has "growth" potential with "green" credentials
manarth··on House with 15m underground tunnels for sale for 300k
What could possibly be more definitive than the monarch's whim?
manarth··on House with 15m underground tunnels for sale for 300k
In granite bedrock areas such as Cornwall, yes, radon is a significant concern that requires measurement and usually remediation (extraction fans).

The chalk bedrock in Reading isn't generally susceptible to radon.

UK radon mapping data: https://www.ukradon.org/information/ukmaps

manarth··on House with 15m underground tunnels for sale for 300k
Auction pricing.

It'll start out at £300k (to market it attractively) and end up selling for £500k+.

manarth··on The art of defusing a second world war bomb
If you're a diver in the water, the water transmits the shockwave very effectively, and is dangerous.

If you're outside the water, the density difference between air and water acts to diffuse the shockwave.

Water is a really good absorbent of explosive energy (as long as you're not also in the same water).

manarth··on The art of defusing a second world war bomb
Water is a great blast-absorbent material.

If 15m of water can't contain the blast, adding concrete or similar is more likely to add solid projectiles to the explosion than diminish the force of the blast.

manarth··on Powerless F1 drivers frustrated by Bahrain F1 software glitch
Formula E and Extreme E have managed some pretty spectacular crashes without battery fires.
manarth··on Powerless F1 drivers frustrated by Bahrain F1 software glitch
there's no traction control or other driver-assistance aids (ABS etc) in f1 cars
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