SomeoneSomewhere
@SomeoneSomewhere@lemmy.nz
- Comment on Caption this. 4 weeks ago:
Only 15mL and into a syringe, right?
- Comment on How to open a textbook 1 month ago:
Apparently still alive at 85: en.wikipedia.org/wiki/David_Goodstein
- Comment on CFCs 2 months ago:
Has it occurred to you that sometimes there’s actual evidence backing up the things you ridicule?
You can go measure the acidity of rain in your back yard if you want.
The sunlight in NZ is far, far harsher than if you go a few thousand kilometres towards the equator, where it should be hotter. We have some of the world’s highest rates of skin cancer. Are you implying that crisis actors are faking having skin cancer?
- Comment on A 7,000-Pound Car Smashed Through a Guardrail. That’s Bad News for All of Us. 2 months ago:
Swifts and Mirages can be under 900kg.
- Comment on The hospital administrators are starting a meeting and "you need to leave" 3 months ago:
What would be different about the family room on the next level down? Presumably that one would be intended for family of patients on the next level down…
- Comment on Enterprise SAS SSD are just built different... two layers, and takes up all the space it can. 3 months ago:
Secondhand stuff can be really cheap if you know where to look, but the drawbacks are usually power and noise.
- Comment on What is wage theft exactly? 4 months ago:
It can also include situations where the worker isn’t paid what was agreed.
For example, if you were going to have a 10% commission but the employer lowers this to 2% or nothing, or where a $30/hour rate magically becomes $15/hour after hiring.
They might legally be able to cut your pay by giving notice - this will depend on the jurisdiction. In other regimes, they essentially have to go through the full legal process to fire you.
- Comment on UN banned Apollo Fusion's business model of using mercury rocket propellant to launch satellites into space 4 months ago:
There’s been various desktop-grade plans regarding use of nuclear rockets, both in the atmosphere and not. Never underestimate what engineers can come up with.
I think what they were trying to argue is that the mercury emitted would be no worse than the mercury already emitted as a byproduct of power plants.
Most rocket operators/manufacturers run on razor thin margins or at a loss, sustained by state subsidies or wishful venture capitalists.
- Comment on Alaska Air Grounds Boeing 737 Max-9 Fleet After Fuselage Blowout 4 months ago:
It appears that the door design is unchanged from the previous generation.
The problem is not with any specific part of the design or any model of plane. Grounding the Max again will not help past fixing this specific fault.
It is the fundamental corporate culture. The same poor QA, both in design and production, affects all current Boeing aircraft.
- Comment on Raspberry Pi is 4.5 times faster than the Cray 1 was in 1978 4 months ago:
It’s not clear, but I think they were referring to the version 1 Pi - the newer ones are much much much faster.
- Comment on Chinese Carmaker Overtakes Tesla as World’s Most Popular EV Maker 4 months ago:
They’re on sale here in NZ and seem pretty popular.
- Comment on Lucid's new all-electric Gravity SUV is a sustainability champion 4 months ago:
Being an SUV, it’ll weigh 50% more than necessary. That outweighs almost any other sustainability considerations.
- Comment on Why is alcohol measured in percentages? 4 months ago:
Yeah, NZ & Aus both have a ‘standard drinks’ system.
My guess is that larger quantities of alcohol (particularly bottles of spirits but also wine) simply aren’t intended to be drunk by one person in one sitting. Total volume of alcohol isn’t that useful; it’s more useful to be able to work out how much is in one shot or one glass.
This is especially important when you look at the same product being sold by the shot/bottle/cask/barrel, or being able to buy a gallon of it in your own container historically.
- Comment on Why is alcohol measured in percentages? 4 months ago:
In beverages, it’s g/100ml.
- Comment on Is the saying, "The internet's written in ink, not pencil" accurate? 5 months ago:
Yup. Expect that everything lasts exactly as long as you don’t want it to.
- Comment on Tesla drivers run Autopilot where it’s not intended — with deadly consequences 5 months ago:
In user manuals, legal documents and communications with federal regulators, Tesla has acknowledged that Autosteer, Autopilot’s key feature, is “intended for use on controlled-access highways” with “a center divider, clear lane markings, and no cross traffic.” Tesla advises drivers that the technology can also falter on roads if there are hills or sharp curves, according to its user manual. Even though the company has the technical ability to limit Autopilot’s availability by geography, it has taken few definitive steps to restrict use of the software.
Tesla told NTSB that design limits for Autopilot would not be appropriate because “the driver determines the acceptable operating environment.”
He said Tesla could easily limit where the technology can be deployed. “The Tesla knows where it is. It has navigation. It knows if it’s on an interstate or an area where the technology wasn’t designed to be used,” he said. “If it wasn’t designed to be used there, then why can you use it there?”
In a sworn deposition last year first detailed by Reuters and obtained by The Post, Tesla’s head of Autopilot, Ashok Elluswamy, said he was unaware of any document describing limitations on where and under what conditions the feature could operate. He said he was aware of some activation conditions for Autopilot, including the presence of lane lines, and that it is safe for “anyone who is using the system appropriately.”
Tesla’s commitment to driver independence and responsibility is different from some competitors, whose driver-assistance technologies are loaded with high-definition maps with rigorous levels of detail that can tip vehicles off to potential roadway hazards and obstructions. Some manufacturers, including Ford and General Motors, also only allow the technology to work on compatible roadways that have been meticulously mapped.
Over the years, NTSB has repeatedly called on NHTSA to rein in Autopilot. It also has urged the company to act, but Homendy said Tesla has been uniquely difficult to deal with when it comes to safety recommendations. Tesla CEO Elon Musk once hung up on former NTSB chair Robert Sumwalt, said the former chief, who retired from the agency in 2021 when Homendy took over.
- Comment on €45,000 for a heat pump installation in Germany -- really? 5 months ago:
Tiny house = very tiny and probably new and well insulated.
Estonia also likely has very low labour costs and less difficulty finding staff.
Hydronic systems are usually in the >15kW range, and often have split indoor and outdoor units so you need to both do the refrigerant piping between indoor and outdoor, and the water piping to the radiators. Many systems also include domestic hot water heating as part of the same system, so three separate sets of plumbing.
In most of the first world, purging linesets, vacuuming, and releasing refrigerant is usually ~$500.
- Comment on €45,000 for a heat pump installation in Germany -- really? 5 months ago:
Running continuously is usually the ideal point. For heat pumps, it definitely is as the efficiency is highest with the lowest split between indoor and outdoor temps.
The issue is that if you suddenly want more heat, you first have to raise the water loop temperature before that can start pushing more heat into the house.
Systems are usually designed to keep up at perhaps 22-24C even on the worst days of winter; maintaining 17C is a lower target that can be met with less capacity and cooler radiators.
- Comment on €45,000 for a heat pump installation in Germany -- really? 5 months ago:
The issue is that the original radiators were sized to move the necessary n kW into the room with a water temperature of 60C. If you drop the water temperature to say 45-50C, you’re only going to get roughly two-thirds of the heat transfer. The other third needs to be made up somewhere else - additional heating or better insulation.
- Comment on Dear YouTube; About that Chapter Skipping Feature 5 months ago:
That is an impressive amount of hyperbole for a post.
- Comment on Cicadas Are So Loud, Fiber Optic Cables Can ‘Hear’ Them 5 months ago:
Fibre optics can be used to measure a remarkable number of properties.
The electrical transmission industry makes significant use of fibreoptic current sensors, and distributed fibreoptic temperature sensors.
The latter is particularly useful as you can measure the temperature at any point along the fibre’s length, allowing you to detect hot-spots in cables.
Cicadas are pretty loud; I’m sure you can pick up much quieter things with a fibreoptic microphone.
- Comment on New Battery Crushes Tesla's Tech, Unveils A Solid-State Marvel With 300% Higher Energy Density, 15-minute Ultra-Fast Charge 5 months ago:
Toyota has been claiming to have EV-killing tech 3-5 years away for 20 years. It’s part of the plan for selling hybrids.
- Comment on 🦃 happy turkey day 🦃 5 months ago:
Title
I over-ate.
- Comment on Microsoft Can't Stop Being Annoying About OneDrive | They make you take a survey every time you close OneDrive on your device. 6 months ago:
I’m not certain exactly what you’re referring to, but my experience is that KDE has almost everything built in.
- Comment on This Roadside Wind Turbine Turns Traffic Into Energy 6 months ago:
Signs point to yes. Pretty sure this is well debunked. Energy available is negligible and the disturbance to nearby traffic is probably measurable.
- Comment on Microvawe transformer spotwelder. Is there a way to improve it? 6 months ago:
Are you able to measure the input current during a weld?
I suspect you might not have enough copper in the secondary. Fully insulated wires take up a lot of space; there’s a reason magnet wire is commonly used. Several parallel turns of e.g. 6mm^2 magnet wire would be preferable.
Your SSR generally should be in the phase, not the neutral.
- Comment on Microvawe transformer spotwelder. Is there a way to improve it? 6 months ago:
If you have a 230V supply and a 230V transformer, you are fine. I believe they thought you were using a 120V supply on a 230V transformer.
Raising the input voltage will probably not get you what you want.
- Comment on Adjusting SMPS output voltage 6 months ago:
TO220 package diodes are pretty common in SMPS applications, so I’m not sure that’s a guarantee.
- Comment on Adjusting SMPS output voltage 6 months ago:
That’s not a mains frequency transformer. Not enough steel. It’s a high-frequency all-switchmode supply.
However, that’s not to say you can simply adjust the feedback and have it safely deliver near twice the voltage. The secondary side diodes and capacitors probably won’t be up to it, or will have a very limited life.
The transformer does have a ratio, and the marking makes it clear that this is a specific part for the 12V model. How much leeway there is will depend on topology. Flyback are generally fairly flexible. Other types less so.
Starting with a 24V model and either adjusting the feedback resistors or adding a few diodes would be near trivial. Many will already have a potentiometer that provides that degree of adjustment. Starting with a 12V model is an uphill battle.
- Comment on Can anyone tell me what PC will draw more power? 6 months ago:
It depends on the application/duty, but maximum/rated power is not usually relevant for power consumption on home servers like this - they’re rarely running at mother than a few percent load.
Idle power consumption is the main concern. Server boards often have a lot of NICs and chipsets that don’t idle well. Consumer gear is generally much better for that.
Neither Westmere nor the AM3 platform are known for low power consumption. A modern LGA1150 or later desktop platform would probably be preferable.