[-] user134450@feddit.de 23 points 4 months ago

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.

[-] user134450@feddit.de 12 points 5 months ago

Other commenters have pointed out the problems with overloading of connectors and reduced efficiency because of the added resistance but there is another really important reason not to chain power strips: circuit breakers work best against short circuits when the resistance between the breaker and the short is fairly low (for instance less than 0.5Ω) so that the current will quickly go over the rated current of the breaker. If the resistance is a lot higher because you have too many extensions between the breaker and the fault, the time the breaker needs to react will go up. Counterintuitively this usually means more energy will be turned to heat by the fault.

In extreme cases this can mean the difference between a broken power strip that you can just throw out and a burned down house.

[-] user134450@feddit.de 11 points 5 months ago

that is not a power plant. a power plant supplies power…

[-] user134450@feddit.de 160 points 5 months ago

What makes them think that the library of Alexandria did it any other way? Nerds have existed long before the internet…

[-] user134450@feddit.de 11 points 6 months ago

also: you can calculate the carnot cycle efficiency of a solar cell as if it was a classical heat-power-machine, even though it has no visible moving parts.

the reason why this works and yields realistic results is because the basic principles of thermodynamics stay the same no matter if you are working with steam, combustion gasses or photons and electron gas inside a semiconductor.

[-] user134450@feddit.de 17 points 6 months ago

downvote for lack of feathers. smh.

[-] user134450@feddit.de 20 points 6 months ago* (last edited 6 months ago)

this is extra tricky because they did not specify the exact kernel. mainline could be any of the kernels tagged as stable that you can build from linus' git tree. i know that in the past you could run a mainline linux on intel 368 chips but today you probably can not because official support was dropped a while ago.

[-] user134450@feddit.de 18 points 6 months ago

I think what he was trying to point out is that you should not expect a direct visible effect of the dwindling funds on the events on the battlefield. It will be much more indirect and delayed by month, maybe years.

[-] user134450@feddit.de 24 points 7 months ago

your text seems to agree 100% with one of the examples in the original posts text: ”[…] immigrants who […] simply sought better lives for themselves and their descendants“.

could you elaborate why you think it is wrong?

[-] user134450@feddit.de 13 points 8 months ago* (last edited 8 months ago)

I think it went a bit further than just selecting the right paint.

I remember there was a program to enhance the stealth for relatively low flying surveillance aircraft (still mostly propeller aircraft at that time) and one of the most effective measures was painting the underside of the plane White and then illuminating it on purpose with a light that was matched to the sky. The light was usually bluish to match the sky. https://en.wikipedia.org/wiki/Yehudi_lights

The reason why this was not simply done at night was of course that the surveillance equipment needed some light to work :)

[-] user134450@feddit.de 8 points 9 months ago* (last edited 9 months ago)

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" 🤦

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user134450

joined 1 year ago