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dingaling

8,874 karma · joined September 6, 2013

A all b bb. Ds sees
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dingaling··on A university president makes a case against cowardice
[flagged]
dingaling··on WWI's 'Dazzle' Camouflage Seemed Effective Due to Unexpected Optical Trick
It was very effective in the specific combination of urban landscape and shadows of Berlin. However the Brigade were only expected to fight there until being overrun by the NVA* ( East German Army ) so they didn't need to consider the camouflage's performance in rural areas.

All modern multi-terrain camouflage does incorporate some aspects of the Berlin pattern, particularly contrasting shadow.

* The NVA's commitment to wider WarPac strategy was questionable so the Brigade was intended to inflict both physical and philosophical damage upon them whilst fighting for their capital; once that objective was seized, it was hoped that the NVA would show little further interest in pushing westward. This was intended to reinforce the forecast reluctance of Czechoslovak and Polish forces and lead to the isolation of Soviet forces.

dingaling··on When you deleted /lib on Linux while still connected via SSH (2022)
Using what command, though?
dingaling··on Tech terms I was pronouncing wrong
That depends on your frame of reference
dingaling··on The F-35 as a Subscription Service
However it used an engine based on the P&W JT8D which made it subject to US export approval. For this reason,for example, it lost a big export order to India.

SAAB had originally considered the British Olympus engine for the Viggen, which would have had higher fuel consumption but faster responsiveness and no export tangles.

dingaling··on The F-35 as a Subscription Service
If a notional Canuck Su-35 couldn't do it, probably nothing could.

The Su-35 has one of the highest fuel fractions of any military aircraft at about 38% of max take-off weight. That's 9% higher than an F-22 and equates to 11,500kg of fuel.

Just conceptualise 11.5 tonnes of fuel - basically an American yellow school bus being hauled into the air by a fighter than can do Mach 2 and pull 9g.

To be fair though the F-35A has a remarkably high fuel capacity too, about 8,000kg. All that chunkiness has an advantage.

dingaling··on Athena landed in a dark crater where the temperature was -280° F / -173° C
Because itbit wasn't top-heavy, a broken landing leg would just leave it slumped at an angle. Not fallen-over.

Consider the difference between removing the leg of a chair versus a stool.

dingaling··on They're Close to My Body: A Hagiography of Nine Inch Nails and Robin Finck (2020)
I'll always feel slightly guilty when I look at the box-set of "And all that could have been" on my shelf.

I bought it from a second-hand music store years ago and when I took it up to the checkout to pay for it ( for it was the days of cash ) the cashier looked heartbroken.

"I'd been saving up to buy that," she whimpered.

I bought it anyway.

I still feel bad, but at least I've opened-up to the HN collective...

dingaling··on Timeframe of 8-hour restricted eating irrelevant to weight loss
> Yes, but I need some practice > being hungry after years of stuffing > my face whenever I felt like it.

Why do you need such practice?

I'd honestly rather suffer an hour doing unpleasant cardio to burn off carbs than spending all day feeling miserable and shaky from hunger. Particularly on jobs or tasks where mental focus is essential.

dingaling··on Gemini Robotics
But why does that matter to Google? They'll never need to issue more stock to raise cash; last year they had $200 billion in gross profit, money they literally didn't find a reason to spend.

Imagine being so replete with cash that after paying all your costs, all your salaries, all your R&D - you still can't find a way to spend 200 billion, so you threw a chunk of it away as tax and put the rest in the bank.

The price of a share should be utterly irrelevant to them.

dingaling··on Show HN: Seven39, a social media app that is only open for 3 hours every evening
That would be very inconvenient for people on a rotating shift cycle.
dingaling··on Canon EF and RF Lenses – All Autofocus Motors
I used to have to manually focus to take photos of my dog. The apparent noise from the early Ring USM AF in the 85mm/1.8 lens drove him mad and he would run out of the room.

We did initially wonder if it was some psychological effect of pointing a camera at him, but one night I hid behind a curtain and used the AF motor and he still shot out of the room.

Subsequent USM AF motors were silent to him and he was then content to have his photo taken.

dingaling··on The internet is killing old PC hardware [video]
Good grief, memorising arcane key combos? Doesn't sound ready for the desktop!
dingaling··on Mox – modern, secure, all-in-one email server
> It's practically impossible to > send SMTP from your own IP address.

I haven't had any problem in that regard in over 20 years of running a mail server on an old PC, on residential ISP connections. SPF, DKIM and rDNS config seemed to keep all the big players happy.

Which just made me realise I don't even have valid rDNS anymore, but it still works.

dingaling··on Firefly Blue Ghost Mission 1 Lunar Landing
Sidelobes aren't really 'soft edges' to a main beam, they're unintended peaks at angles outside the main beam which sap gain. You can see peaks here around 29, 55 and 68 degrees:

https://www.gpsworld.com/wp-content/uploads/2020/10/Improved...

As such, successive GPS satellite antenna designs have been refined to reduce sidelobes, just as deep-space operators have realised they could be useful.

TLDR: sidelobes aren't like gentle feathering at the edges of a beam, they're more like petals of a daisy.

dingaling··on You Don't Need a Terminal Multiplexer on Your Desktop
After a while though, particularly on flakey connections, I end up with dozens of stale mosh sessions on each server, all listening for inbound connections that will never come.

The quickest way to clear them seems to be pkill mosh and then reconnect. It's a known bug with no anticipated fix.

dingaling··on Google Maps now shows the 'Gulf of America'
> it was named from our point of view.

Actually it was named from the perspective of Spanish explorers. Originally Gulf of New Spain but by 1569 had become Gulf of Mexico.

dingaling··on Seagate: 'new' hard drives used for tens of thousands of hours
On-demand scaling is still a feature of zSeries mainframes, now called Elastic Capacity on Demand .

To non-corporates it might look like wasted resources or gouging the users, but from the enterprise perspective it's a marvellous feature. It's basically on-premises cloud-scaling.

dingaling··on Apple and SpaceX link up to support Starlink satellite network on iPhones
The number of Starlink satellites and the rapidity of their replenishment vastly outnumbers the number of ASAT interceptors, and launchers, that any nation could produce.

Shooting-down Starlink satellites is economically infeasible, never mind the fratricide it would cause to the aggressor's own LEO assets.

dingaling··on Boom XB-1 First Supersonic Flight [video]
> there are no active commercial aircraft capable of going supersonic.

Both the Cessna Citation TEN and the Bombardier Global 8000 were taken supersonic during test flights, as they have to demonstrate stability at speeds of M0.07 greater than max cruise.

They aren't certificated to do it in service, but structurally and aerodynamically have no problem.

Long-range business jets have been pushing aeronautical boundaries well beyond the mundane airliner state-of-the-art.

dingaling··on Boom XB-1 First Supersonic Flight [video]
> and post 9/11 ...

Two-thirds of BA's Concorde regular passengers died on 9/11. The service never recovered financially from that loss.

dingaling··on We're bringing Pebble back
It's strange to see the naivety around Reader.

If Facebook had created it, people would recognise the initiative to gate-keep, regulate and curate the Wild West of RSS. "They're trying to keep you inside their walled garden!"

dingaling··on The Microsoft 365 Copilot launch was a disaster
I'll credit them for Windows NT, that was a solid system ( though developed mainly by ex-DEC staff ).

SQL Server was originally licensed from Sybase.

dingaling··on A Cold War Satellite Program Called Parcae Revolutionized Signals Intelligence
"In a time of mutual assured destruction"

I do wish that myth would die. All nuclear players during the Cold War intended to "win" at nuclear war fighting; MAD was never a doctrine.

In fact MAD was popularised by McNamara to mock the concept!

dingaling··on Starship Flight 7
Thank you, I was trying to convert Central Time to something understandable.

All their systems and logging are running in UTC, why can't they just give launch times accordingly.

dingaling··on Do It in Jeans First
> Cotton is generally a great fabric

> if you sweat, because it wicks

> moisture and breathes.

Cotton is the antithesis of wicking - it holds moisture and chills the skin. It would be hard to find a fabric worse at wicking than cotton. It can hold liquid up to 27 times its mass.

Jeans have no practical application outside workwear, they are purely fashion.

dingaling··on Orbit by Mozilla
> The need for summarizing is a > symptom of our increasingly > poor communication and degrading > writing skills.

Whilst I agree there is a societal decline, there has also always been a corporate tendency towards verbosity and opaqueness.

The old rule from the days of memos still seems to apply: ignore first paragraph, get positive / negative gist from second, learn about the impact in the third, ignore remainder.

dingaling··on Trying to use Bluesky without getting burned again
I can only dream that it triggers meetings with security.

I once started receiving spam addressed to <mybankname>@<mydomain>.org and after several instances I reported it to MyBankName.

I explained that I only used that address in my dealings with them and so it must have leaked from them.

They said that's not how email works, you have one address that you use with all your contacts. One of them must have leaked it.

I tried to explain that I used a different host portion with each company I contacted.

They said that's not how email works, you have one address that you use with all your contacts. One of them must have leaked it.

I transferred my balance out and let the account lapse.

dingaling··on Will even the most advanced subs have nowhere to hide?
> given the size/strength requirements mean steel

The Soviet Alpha, Mike and Sierra classes were built from titanium. Incredibly expensive but very deep-diving and invisible to MAD.

dingaling··on The 1955 Le Mans disaster changed motorsport
> I stopped seeing caps in gutters.

Do you think that people who were inclined to discard bottle caps were correctly binning their bottles?

No, they were also throwing down their bottles which were more easily carried away by the rain and wind. Now, both the cap and the bottle are being washed into rivers instead of the caps being left behind. Net improvement: zero.

It's a classic example of survivorship bias. It's like the headline that bottle caps were the third most common litter on beaches - because bottles, sandwiches wrappers and crisp packets had been washed out to sea.

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