Hacker News: ew6082

New comment by ew6082 in "The Steinwinter Supercargo"

ew6082 — Wed, 27 May 2026 00:44:30 +0000

Boeing has a similar vehicle that drives the rear end of long load trailers around Seattle.

https://www.youtube.com/watch?v=wsZ6YPsPpj0

New comment by ew6082 in "Map of Metal"

ew6082 — Thu, 21 May 2026 01:35:16 +0000

I love it! Was the inability to turn down the volume on the mini player intentional? This had me laughing. I'm at work, but that's metal AF.

New comment by ew6082 in "Drinking newer groundwater linked to up to 62% higher Parkinson's risk"

ew6082 — Tue, 03 Mar 2026 23:59:27 +0000

The way they wrote it is confused and misleading. I suspect it's a corporate piece to sway people to buy glacial-whatever water.

New comment by ew6082 in "Investigating the Luna-Terra Collapse as a Temporal Multilayer Graph"

ew6082 — Sat, 19 Apr 2025 08:09:01 +0000

how about you pick a title that makes it clear its' talking about crypto and not orbital mechanics next time.

New comment by ew6082 in "Nobody cares"

ew6082 — Thu, 16 Jan 2025 02:20:46 +0000

This is the most likely reason. They should have put a sign, but the ramp looks right to me if you want them to match pedestrian speed when merging into a pedestrian space.

New comment by ew6082 in "It Can Be Done (2003)"

ew6082 — Mon, 12 Feb 2024 11:06:56 +0000

I am an Engineer and have done things both ways throughout my career. What is easy to miss in digital are the overall holistic design and the way it all fits together, because you are always zoomed in on a particular piece of the puzzle and rarely see the whole thing on screen in a meaningful way. There is just something about seeing a full design laid out on paper, spread out on the table, that lets many little things jump out at you.

If it's important print it out, in large format.

New comment by ew6082 in "Lights have been on at this school for a year because no one can turn them off"

ew6082 — Fri, 20 Jan 2023 10:00:34 +0000

This was obviously not a good system design, but a box full of relays and PLC controller cost a whole lot less than the all-in employer cost of an extra employee.

They really should also be able to turn off the lights at the breakers unless they did something exceptionally stupid like put the fire control panels on the lighting breakers.

New comment by ew6082 in "Is this the end of social networking?"

ew6082 — Fri, 12 Aug 2022 01:20:13 +0000

The scary part is how much real interpersonal communication data they have on users and what could be done with it in the wrong hands. What is their real business model? It can't just be selling Nitro.

New comment by ew6082 in "Boeing looked for flaws in its Dreamliner and couldn’t stop finding them"

ew6082 — Wed, 27 Apr 2022 21:42:24 +0000

Because gaps like this multiply out at the end of a beam. If for example the abutting structural member relies on that joint for support and is 12 feet long (144 inches) and lets say the flange is 6" across, .005/6 x 144 = .12" which is about 1/8 of an inch of wiggle at the end. If your gap were, say .010" instead, there is suddenly 1/4" of wiggle and when things can wiggle like that vibration gets much worse.

New comment by ew6082 in "New engine could save internal combustion from the scrap heap"

ew6082 — Tue, 01 Feb 2022 22:22:21 +0000

Which is why we usually have multiple cylinders to deliver smooth power. A V8 is getting power on 4 cylinders each revolution, etc.

New comment by ew6082 in "New engine could save internal combustion from the scrap heap"

ew6082 — Tue, 01 Feb 2022 01:36:51 +0000

I see no reason this thing wouldn't lose compression or backflow exhaust gas after wear-in, and wear-in would happen quickly with the cyclic load on those ball bearings. It's a pretty animation but unless they have some spring loading to press the upper and lower rings together the compression (and therefore efficiency) doesn't appear to be durable. There are also some limitations to having a single power stroke per revolution. This can be geared down, of course, but at an efficiency cost.

New comment by ew6082 in "When did Maytag go bad? (2007)"

ew6082 — Wed, 19 Jan 2022 01:05:48 +0000

The newer Speed Queens are barely audible. I have to listen for the water sloshing to tell it's even on.

New comment by ew6082 in "New AI tool calculates materials’ stress and strain based on photos"

ew6082 — Thu, 29 Apr 2021 03:30:05 +0000

Guesses poorly too, based on the examples. The crack growth example is almost laughable. These are nowhere close to where real cracks would form. Cracks start on the inside corner of brittle joints.

The bar stretch is also completely wrong, there are no stress concentrations at the top and bottom; it should be uniform stress or concentrated strain in the center depending on what they're attempting to show.

New comment by ew6082 in "SpaceX SN9 Explodes on Landing"

ew6082 — Thu, 04 Feb 2021 00:30:06 +0000

A static weld is usually stronger than the base metal under static conditions (i.e. not undergoing dynamic shock loading). Welds are created at 3000 degrees C with 50-100C metal right next to it. By the time a weld cools there are always captive stresses, meaning during a failure the weld is the most brittle part. This can be alleviated with pre and post weld heat treatment, but there are always stresses built into a weld.

New comment by ew6082 in "Physicists challenge Google’s ‘quantum advantage’"

ew6082 — Tue, 29 Dec 2020 02:10:13 +0000

Perhaps its a bad article, but I can't see the value of solving the boson sampling problem by sampling bosons having any application in general computing.

New comment by ew6082 in "Physicists challenge Google’s ‘quantum advantage’"

ew6082 — Tue, 29 Dec 2020 00:52:39 +0000

Exactly. This sounds like pure propaganda. They're measuring experimental results and calling it a computer.

New comment by ew6082 in "The future of electricity is local"

ew6082 — Mon, 28 Dec 2020 01:41:27 +0000

Renewables won't buy an industrial power user out of the grid, they need reliability. Also, location is more important than what the power bill is for most industry and commercial. You need a large plot of land for the power to run your average large power user.

New comment by ew6082 in "Jailbreaking Used Teslas"

ew6082 — Sun, 01 Nov 2020 04:17:10 +0000

These are wrecked cars, however. Who is to say that the batteries don't have hidden damage that could cause them to blow on a fast charge and cause a fire? We already know Teslas have fire issues.

New comment by ew6082 in "Why Does the U.S. Have Three Electrical Grids?"

ew6082 — Wed, 21 Oct 2020 07:14:46 +0000

Among US utilities, local public utilities seem to work best. Federal run facilities are deeply mired in bureaucracy and acquisition guidelines, while fully private power companies are prone to get bought out by large investor conglomerates and end up too driven by quarterly profit to invest in maintenance.

New comment by ew6082 in "Stop Asking Me to “Sign Up” (2014)"

ew6082 — Sat, 26 Sep 2020 22:45:10 +0000

Pinterest drove me up a wall with this. I didn't sign up for 4-5 years, and only because I actually needed to see an image for work, because the arrogance was annoying. I have a permanent dislike for their product because of it.