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83··on Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You
Was there an article about this? Does Walmart ditch products that have highly cyclical sales?
83··on Bing: “I will not harm you unless you harm me first”
What is the appeal here? Wouldn't this just get dominated by the first person to write a quick script to automate it?
83··on Google shares lose $100B after Bard makes an error during a demo
While somewhat true, the capability is there to make this much more pervasive and subtle. Any recipe mentioning tequila can instantly become <insert brand> tequila.

Also don't limit your imagination to recipes. People googling car check engine codes will be recommended <paid advertiser> parts from <paid advertiser> websites which can helpfully be installed by <paid service center> nearby. I fear searching is going to get much uglier/noisier than it already is.

83··on Ask HN: Laid off folks, are you getting hired?
If you aren't a homeowner the facilities are the hard part. Need a large space where you can have a glass furnace and concrete floors that won't get damaged by molten glass. Lampworking is easier to get started in, but still need a place to run a torch (ideally with a vent hood) and store oxygen/propane cylinders.
83··on Google shares lose $100B after Bard makes an error during a demo
Chat based just means the ads will be more insidious.

User: Bing, how do I make a cake?

Bing: Start with 2 cups flour - be sure to use King Arthur premium baking flour for a proper batter - then get 1 cup sugar...

83··on State Farm says 105 Kia, Hyundai models ‘ineligible’ for new insurance in LA
Jerf is in Michigan (Ann Arbor). Michigan does not require comprehensive afaict, only liability.
83··on The fertilizer shortage will persist in 2023
It's 14km (8.8mi) from your pinpoint to the Arkansas, from there it's about as straight of a shot toward the gulf of mexico as you can get (via the Mississippi).
83··on The fertilizer shortage will persist in 2023
For the US, there's a nice app where you can follow the watershed path: https://river-runner.samlearner.com/

Edit, direct link to the pinpoint: https://river-runner.samlearner.com/?lng=-98.92662834458773&...

83··on Metal-rich, potato-shaped asteroid could be worth $10 quintillion (2022)
No chance the metals would become "too cheap to meter". I'd bet on the opposite in fact:

step 1) acquire the stockpile of metals

step 2) set prices just low enough you drive all current mines/producers out of business

step 3) quadruple the prices. It'll take people a long time to spin up new mines and refineries. For bonus profits spend some of your monopoly money on lobbying/regulation.

step 4) goto step 2

83··on Metal Without Mining
Magnesium parts are already in widespread use. The covers you see on the sides of motorcycle engines/transmissions are often magnesium.

In solid form the risk is mitigated because there isn't enough surface area for the reaction with oxygen, it's the powder/shavings that are a concern. You can actually weld magnesium parts without it igniting.

Reading up on it a little more - it seems with enough heat solid magnesium can start a self-sustaining burn without oxygen. I wish I could find a laymans explanation of the difference between oxygen fueled magnesium powder fire and self sustaining. Must take an awful lot of heat if a welding arc isn't hot enough to cause this.

Edit: Also think of steel wool and how well it burns, but a block of steel not so much.

83··on Yet another keyboard post, or, introducing ErgoNICE
I've been looking for a gergoplex but gboards.ca has been down for a long time. If you read the later blog posts on web.archive it's a sad situation, I doubt it'll be back online.
83··on Niron Magnetics – powerful, rare earth-free permanent magnets
I hear you. Batteries, magnets, and motors seem especially prone to this type of page where it constantly says "will enable", "will produce", and experts who "will help" this technology come to fruition.

At this point I consider it spam unless it says "has enabled", "have produced", or gives some already achieved numbers.

83··on Pirate Weather: A free, open, and documented forecast API
Is metrology a typo, or are there countries that call it metrology instead of meteorology?

In the US metrology is a specific field dealing with measurement, often the department dealing with high precision calibrating/measuring tools in the metal machining industry.

83··on Fun, danger, and 70s airplane toys
Thanks, this gives me something to look into. I've been too busy the past few years to fly my long range planes and need to catch up on what's changed.
83··on Fun, danger, and 70s airplane toys
>>25km

Dragonlink, Crossfire, or something else?

83··on The Avogadro Constant And The Epoxy Putty (2018)
The reputable brands of liquid epoxy have data sheets included or available on their site with weight mixing ratios. The best way to mix is to use a paint scale (mettler toledo and sartorius make some) which lets you get both amounts precisely. They are made for automotive paints which require very precise ratio measurements (like 30:20:1).

Source: I mixed up about 20 gallons of various brands/ratios last year.

83··on The Avogadro Constant And The Epoxy Putty (2018)
Those pumps are awful. If you get an air bubble in the line or need a small amount you risk messing up the ratio and having a poorly cured batch. Plus the hardeners react with the air so if its been sitting a little while the first part of your pump is bad hardener. Highly recommend everyone use a scale.
83··on O Holy Crap
https://hamiltonbeachcommercial.com/

I've been quite impressed with the few of their commercial items I have. The important parts are metal, and clearly a lot of though went into design (things like the blender jar being designed so there's nowhere for water to pool after you wash and set it upside down). The only unimpressive thing is the price.

83··on Repairing Your Car in Your Own Garage Is Considered Illegal in Sacramento, CA
Depends on the welding, stick welding gives off plumes of smoke and vapors. Tig welding is the opposite and very clean.
83··on The Physics of baking good Pizza (2018)
Aluminum has low thermal mass but high heat conductivity. So the heat transfer to the pizza would be fast, which is good, but there wouldn't be a lot of it unless you had a really thick chunk of aluminum.
83··on RapidSlide Adjustable Wrench
Looking more closely, the slider screw has a pitch of approximately 0.545"/rev and a diameter of 0.25", for a helix angle of 34°. This means that less than half of the slider force is actually used to turn the screw, undermining any force gain. That is, the jaw force is less than is applied to the slider due to the screw's inefficiency as over half of the applied force is lost pushing against the screw's supports.

Is that accurate that over half the force is lost? As the helix angle gets lower wouldn't more force be transferred to the screw instead of the supports? I'm no mechanical engineer but my gut says 45 degrees would be the point where forces are balanced between screw and support and as the helix angle decreased (to 34 degrees for example) more than half the force would be applied to the screw.

83··on Ask HN: Can you recommend an “instant-switch” Monitor? Does one exist?
Top comment leaves out HDCP entirely as well which I would wager is where a lot of people experience delay. If you want to learn more about it search for the edid hotplug detection. Once that gets negotiated it is followed by the hdcp handshake. Keep in mind while reading up on this the industry terms for devices are "source" and "sync". Video goes from source to sync.

The hdcp handshake is a particularly bad mess which most manufacturers don't implement well due to a very confusing spec. My experience has been some devices start showing video right away and kill it if hdcp handshake fails, while other devices don't show video until hdcp handshake succeeds. Behavior is quite hardware dependent.

The commercial vendors like Extron (crosspoint switchers) and Crestron (digitalmedia switchers) have this figured out pretty well where switching is almost instant so it's definitely possible. I think Crestron has some technical papers out there that discuss the challenges involved.

83··on How to estimate an SSD’s working life
I've been averaging about $19 per 4tb SAS drive on ebay (refurbs), though sata tends to cost a little more being the more common format.

I've had great luck with surplus HGST drives, they tend to be more reliable than Seagate.

83··on Snap updates happen without user consent
Ubuntu Snap (package management). Not Snapchat
83··on As last module docks, China completes its space station
> I frequently see statements from naive Americans that all that the Chinese do is based on copying, but unfortunately for USA, that was true only in the past and it is no longer true today.

Just because you don't follow them doesn't mean they don't exist. Plenty of ongoing IP theft cases show this is not true. This case closed a few years back that pretty much wiped out a Billion+ dollar US company: https://www.justice.gov/opa/pr/chinese-company-sinovel-wind-...

83··on Canon EOS R7 Disassembly and Teardown
Yeah, my Canon micro four thirds camera went through 8 years of canyoneering, caving, rock climbing, kayaking, falling out of my car, etc. By the end the screen was so scratched you could barely see it and the body so dented you had to pry the battery out but it was still trucking along - only replaced when I upgraded to something newer.
83··on Alaska snow crab season canceled after disappearance of an estimated 1B crabs
>> Enforcement is a solved problem >> The issue is getting everyone to enforce the policies

Doesn't seem solved to me. Look at the trouble south america has been having with chinese trawlers doing illegal fishing and sending it back to china.

83··on TikTok profits from livestreams of families begging
I couldn't actually think of what the 't' word was until you said transmission - that's the context where I hear it FAR more often.
83··on Alex Jones told to pay $965M damages to Sandy Hook victims' families
The first amendment is not a free pass to say statements that are dangerous or harmful to others.
83··on Mcmaster.com is the best e-commerce site I've ever used
That's unfortunate you lost Zoro. They still operate in the US - I use them a lot.
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