https://en.wikipedia.org/wiki/Nick_Piantanida

This guy was in a remote controlled, parachute equipped gondola at 17km altitude wearing a pressurized suite. His suit broke and even though the emergency descent of the gondola was immediately activated to descend safely, he later died from embolism (bubbles forming in the blood because of rapidly decreasing pressure). Passenger jets cruise at about 11km so i gather it would be similar.

There has been some fusor research going on for decades. The issue that killed that direction of fusion research was ultimately that the electrons do not behave as the initial simple models suggested and in the real world the power loss from the fast electrons is just too big for any reasonably sized device to allow for self sustaining fusion.

Yep this is the official way. There is also the quick and dirty way of adding a new ID to your existing key to enable its use with a different email sender, but be wary of the info leaks this could lead to…

If you want to be super exact about it it would be roughly 4 times the mass of limescale + mass of already dissolved CaCO₃ in your tap water (you can look that up if you know the hardness index of your water).

But really just don’t be stingy with citric acid and it will be fine is what i am saying.

Here is the math:

Note that citric acid works a bit more nuanced than many other descalers: it acts as a chelating agent at high concentrations (2x the Ca2+ concentration) and is more effective at removing scale because of this effect, but at lower concentrations the effect might actually be reversed because it can form solid calcium citrate, which has a very low solubility in water.

If you are using citric acid based descaler you should make sure that you are always using enough of it to avoid the formation of calcium citrate.

that sounds almost exactly like the Reichsbürger in Germany. They also claim the current German state is actually just a corporation and the laws of the German empire are somehow still applicable. They also create their own passports. And of course they are deeply interconnected with Neo-nazis.

you mean turing complete?

oh i must have missed a few orders of magnitude there. 6Mt of helium is a ridiculous amount though … what is all that used for? according to WA that is about the water volume of the three gorges dam at STP

Edit: just read the report, wow, more than a quarter of all the helium is used just for “breathing mixes” which i assume means its for scuba diving.

from the wiki article on Helium:

an estimated 3000 metric tons of helium are generated per year throughout the lithosphere.

I think the main issue here is not that we are loosing helium on a planetary scale but that the easy to reach helium from gas wells is wasted. We will never run out of helium at our current rate of consumption before the sun goes nova, if we consider all sources on earth, but it will get a lot more expensive and the supply will get less steady.

datasheet for one of the drive models apparently these have a dual SAS interface, so what you are seing could be completely normal. i dont have any experience with this type of setup though.

btw you can uniquely identify partitions by using something like lsblk -o+PARTUUID,FSTYPE the partuuid should never repeat in the output even if the partition table was somehow used as a template (though "dd"ing from disk to disk will duplicate those of course)

also check out the “SERIAL” column for lsblk to uniquely identify the drives themselves.

could you run something like sudo lsblk -o+MODEL and note down the model for the drives? i kind of suspect that the HBA you are using is still doing some abstraction and is not in IT mode. the duplication could come from connecting two SAS cables to the same backplane, thus creating a sort of double image of the enclosure. this is usually handled and hidden by the HBA though if it is configured correctly.

pls also check that you are in fact using the correct ports on the enclosure. if you are not building a SAN only the “A” ports are supposed to be used and the “B” ports should be unused/free.

just a bunch of individuals drives

that is literally what JBOD means so congratulations you already have one. a classical RAID would show up as a single drive.

Initiator-target (IT) mode enables creating a JBOD with zfs vdevs on it. You can have the zfs vdevs in raidz configuration (which would give you the same drive redundancy as a hardware raid, with raidz1 performing similar to RAID5)

zfs is commonly used with a JBOD configuration on a raid controller but you can also use any other kind of controller as long as the individual drives can be written to. examples for this would be NVMe drives directly attached to the PCIe bus or normal SATA controllers. This is more a performance optimization than an issue with compatibility.

click on the link pls

“ἰχθύς” is the ancient greek word for “fish” https://en.wiktionary.org/wiki/ΙΧΘΥΣ

yes indeed. i keep being confused how email can still suck so much sometimes when it had decades to mature.

yeah this is a real pet peeve of mine.

In German many people, web mailers and also sometimes even email software use “AW:” (short for AntWort) instead of “Re:” and then some of them don’t even recognize the existence of a previous “AW:” or “Re:” giving you such wondrous email subjects as: “AW: Re: AW: Re: AW: AW: Re: AW: Re: really important subject” 🤦

you h2e it?

woah this is awesome!

maglevs need classical wheel systems anyway because there might be a power outage, so simply having wheels that are compatible with the local rail system is a brilliant idea.

add in a tiny propulsion system so they can use the normal tracks at low speed without the help of the maglev tracks and you can sort of blend the two systems together in critical locations like switches and train stations.