opwieurposiu

I have the old Chromecast that came without a remote and it is great. It just sits there showing nature photos until I select something to watch using my phone.

I also have a "Google TV" one that comes with remote and it is terrible. The home screen is full of crap that I do not want. It suggests stupid youtube stuff for the kids. I have not figured out how to make it act like the old Chromecast.

The Canada Goose is protected under federal law in the United States primarily due to the Migratory Bird Treaty Act of 1918.

This was a treaty between Canada and USA, enacted to prevent more extinctions due to hunting, as happened to the passenger pigeon.

You can hunt them in the fall in most states, but you can't hunt the most annoying ones that live inside city limits year round. They do not taste great, good for dog food though.

Depending on the type of rocks and how fine you want to grind them, the Specific Energy used is between 10-100(kWh/t). That leads me to guess $8-$25 per ton of electricity used for grinding rocks into sand. I was unable to find good numbers for the capital cost.

At an aggregate mine located in Brazil, the total expenses are $80-$160 per ton [1].

The price of sand at home depot is 5.96 for a 50lb bag, $238 per ton. My conclusion is you could make sand by grinding but it would cost 50%-100% more vs. digging up the beach.

[1] https://www.scielo.br/j/rem/a/8MW5dFZc5Vh6qMdnTqRKbfM#

Edit: Chat GPT thinks it would cost $62.25/per ton make sand from rocks.

Such tools exist, ex:

https://imagetwin.ai/

A big pit works fine if you remove the legs from a standard trampoline. The downside is that you do not feel like you are bouncing as high, because you don't get to start with the extra 4 feet in elevation.

I would so love to be the caretaker of a toilet in Honolulu for $400,000.

Where do I apply for this job?

Lobsters in the gulf of Maine are fed A LOT of herring as bait. Like 70,000 tons a year. Hard to say what the overall result of this is. More lobsters? Less Herring?

Some lobstermen joke that they feel more like ranchers then fishermen.

https://www.wellsreserve.org/writable/files/Goldstein-Shield...

That 0.34 is applied to a huge frontal area though. Ends up having lot more drag then a sedan because the truck needs to move a lot more air molecules out of the way.

I have been using Kagi for a few months, happy customer.

Only problem is now, when I happen to use google, I keep accidently clicking on the ads! My ad-avoid skills are withering.

You can also do this at a household level. It is called heat recovery drain pipe, basically a heat exchanger that replaces a vertical section of drain pipe. The wastewater heat is used to pre-warm the fresh water going to the water heater. Water falling down a vertical pipe tends to spread out and cling to the inner surface, giving you more surface area for heat transfer.

Last time I priced this system out the installed cost was going to be about $1000, at that price point the payback time is pretty long for a single family home but much better for an apartment building.

https://www.homedepot.com/s/power-pipe?NCNI-5

Wow, I developed alcohol intolerance a couple years ago, your comment made me realize it might be related to COVID.

Apparently COVID can give you Histamine Intolerance:

https://medium.com/@calebwilemon/covid19-survivors-alcohol-i...

This paper has some more details of how the sample collection system works. I agree that cold-welding is likely.

https://link.springer.com/article/10.1007/s11214-018-0521-6

Once the ones wear down below 0.5 they start to look like zeros.

The relevant standard is called PS20, American Softwood Lumber Standard:

https://www.nist.gov/system/files/documents/2021/10/26/PS%20...

Note also that green wood will shrink as it dries, so the moisture content at the time of grading makes a difference.

One time we got a new batch of assembled boards that would randomly quit working. This was for an older product that we had been selling for years without issue. Turns out an IC supplier had moved their chip to a smaller process. This smaller chip had less gate capacitance and was making much sharper corners on it's square waves.

It was slow data, like 10mhz or something. We were safely under the 1/10 wavelength rule with the old, softer corners. With the new sharp corners we were over the 1/10 wavelength rule and the circuit was ringing so hard it would cause nearby chips to latch up. We added some termination resistors and it was fixed.

Also note that this kind of thing can be hard to diagnose, because when you put the scope probes on, some of the ringing energy goes into the scope and it tends to improve the situation as long as the probe is there.

I think the pit is significantly smaller then a bowling ball, probably closer to a softball or a grapefruit. The diameter at critical mass is 95–99mm.

They make it subcritical by putting a hollow in the center. This hollow was about the size of a golf ball on the fat man design. It has to be large enough so that is does not go critical when immersed in water, but outside of that you want the pit to be as small as possible.

On older designs they filled the hollow with a safety chain made of cadmium balls(like the chain on a ceiling fan) as a Neutron poison. The bombardier would have to pull out the chain to arm the bomb.

The Caterpillar diesel engine manual says you can burn up to 5% used motor oil without affecting the warrantee. It does say to make sure you filter the used oil so as not to gunk up your fuel system.

For a large engine that produces many buckets of oil at each change, this is a good way to get rid of the stuff.

ALRA and LNT are not helping people, and science is hard, so why not do something simple? Just use Denver. Denver has more background radiation then average, but Denverites are also healthier then average.

If the background in your power plant is less then the background in Denver, your good. Right now power plants are expensively regulated down to 1/10 or 1/100 of a Denver.

To beat water's specific heat, you have to cheat and use a phase change material (special wax) that melts near the desired water temp, or a bit higher if you use a cold water mixing value.

In some areas fluoride is in the rocks and dissolves into the underground water. This is pumped up via wells.

Surface water, AKA rivers, starts with low fluoride in the mountains and it slowly accumulates as it flows down to the sea. Surface water almost always has less fluoride then well water though.

Reading large numbers of RFID tags has a similar Collision avoidance issue. At the user level, when there are too many tags/read collisions in an area, I reduce transmit power so that my "read bubble" is smaller. You then move the reader around physically until you quit seeing new tags. This is a form of space division.

This is a summary of how RFID solves it at the protocol level, mostly using time division. In practice using cheap readers, I have found this to work up to a few hundreds of tags in one read bubble.

https://www.mdpi.com/2076-3417/8/8/1282

We did "Teach your child to read in 100 easy lessons" when the kids were around 4 and it does exactly what it says on the cover. The school said the kids tested in top 5% in reading. I have bought and given away many copies of this book because it is so rare that something just works.

I think the reason schools do not use this is because it requires around 30 min of undivided attention per kid per day to make it work. So one teacher could handle maybe 10 kids with this system.

LOL, this is so true. I have spent so many days sweatily folded into a dark corner of the bilge fixing the VacuFlush toilet system on Grandpa's boat. The pros want 5k even to look at it, and I don't blame them. IME it is the least worst of the marine toilet systems, but still a maintenance hog. Land toilets mostly just work. Marine toilets mostly just don't.

* Though I should mention I actually like the VacuFlush, it is the least worst system IME. The VacuFlush works like an airplane toilet, with the big WOOSH, it will flush anything. Negative pressure keeps bad smells contained. The downside is finding a vacuum leak can be quite a challenge.

Most old oil fields already do this, it is called "enhanced recovery". You have injection wells where you pump down water and production wells where a water/oil mix comes up. The water you use is mostly contaminated stuff you want to get rid of any ways.

You do have pump the water in under pressure though, just letting it pour down the hole will not work since rock is more dense the water. Imagine you were standing on a sponge in the shower, the sponge will not absorb much water since you are squishing all the pore spaces closed.

TV and radio stations can be used for passive radar. Passive radar is when you use existing radio sources as you illumination source and your radar system is listen-only. Stealth aircraft tend to be more visible on passive radar since passive is usually a longer wavelength that the aircraft was not designed for. You can even DIY a passive radar.

https://spectrum.ieee.org/passive-radar-with-sdr

This kid can really write. Clearly he learned more then just how to chop wood.

This looks to me like a "cold shut", which is a type of casting defect.

"Cold shuts occur when two relatively cold streams of molten metal from different gates meet and do not fuse together properly during the casting process. This problem is visible to the naked eye – giving the appearance of a crack separating the two sections."

https://www.haworthcastings.co.uk/news/the-differences-betwe...

Cracks caused by impact have sharp edges and cracks caused by cold shuts have more rounded or sandy looking edges.

A mile is 5280 feet because it is 80 chains (survey chains) long. The chain's length is a byproduct of English land tax laws which were by the acre.

The roman mile was 1000 paces, or 5000 feet, which made a bit more sense.

https://en.wikipedia.org/wiki/Gunter%27s_chain

Around 2002, there was a startup that funded itself by offering "lifetime" hosting for $500. I think it was called "textdrive". Anyway I bought it and it lasted about 8 years. The company went under or got bought out or something. Still not a bad price on a monthly basis.

Anyway, If you get this, don't be surprised if it only lasts a decade or two.

Last week I needed to some quick SQL from a box with nothing and wound up installing DBeaver community. It is actually quite good. It has every feature you can think of, and pretty well organized to.

The only downside is that the UI is a bit laggy, but that's to be expected when trying to pack so much stuff into a java desktop app.