this multicolored pattern looks like this because thickness of layer of whatever is comparable to light wavelength, mechanism is the same as in oil layers on water being colorful. it didn’t spread from magnet, the layer is thinnest near magnet and becomes thicker near edges, which suggest it might be just dirt/oils that accumulated on it by contact. try wiping it with alcohol or acetone or what have you

i think that preferred contact is by matrix

he’s either out of fucks, or knows exactly what he’s doing

“has potential” and “could” but never “is”

90% of drugs that enter clinical trials, fail them

“All day Astronomy” seems to be a weird place to take medical news from

it’s a type of heat engine. heat engines require temperature difference to work, and the lower it becomes, the less energy is there in the first place and a very fundamental limitation, that is carnot cycle efficiency, goes down very quickly. in practice, all heat exchangers have some thermal resistance, and the lower temperature gradient you can afford to use up on this, the bigger heat exchanger becomes, making low grade heat powerplants extremely big and expensive on top of barely generating any electricity

i don’t think there’s a lot of energy to be squeezed from daily variations in air temperature vs lake temperature, you’d be better off just by using solar panels on the same area

take any aluminum can, cut it open, cut a plate fitting in your wallet, insert it there so that it sits on external surface if your walket, done, that’s your yeehaw rfid blocking sleeve, extra mass 1g

if you want to scan bus pass you can put that card on external side of it

drones can be also shot down and operators radiolocated very quickly

no, because they have separate comms using completely different bands. esp when you’re talking about military

if you switch to different band, probably nonstandard and unlicensed, then there must be someone else to listen

the waste heat comes from cryogenics system that keeps all of this helium at below 3K. turns out you need to spend a lot of energy to cool down things to temperatures this low

there’s nothing wrong with 3rd party batteries, if it’s worn down so badly that it no longer does the thing that it is supposed to then replace it, idk why it’s a question. I replace mine when they’re at 60% of original capacity

Your best bet is to just not engage with them when topics like that come up

real soon it will include any topic

if sun was orange, it wouldn’t be orange, it would be just precieved as regular white light, and new-orange would be even more oranger than what we know today

you can’t turn a gas into liquid by compression alone if temperature is above critical point, you also need to cool it down. separation is done by fractional distillation, but the reason it’s done is mostly about oxygen (medical and steelmaking among some other uses). for nitrogen it’s somewhere about -150C. first air is stripped of water and carbon dioxide, then it’s turned into a liquid, then it’s separated into oxygen, nitrogen and argon, and some large specialized plants also separate xenon, krypton and neon

if you don’t actually care for it being a liquid, there’s another method called pressure swing adsorption that separates gases based on how tightly do they bind to porous surfaces under pressure. this is how medical oxygen concentrators work

making liquid nitrogen is pretty efficient these days, as in not much more energy is used than is actually needed

yeah nah, you are a tool and talk like one, there’s zero risk you’re ever getting close to admission

how many alts have you made today

deleted by creator

you need really spicy photons for activation to happen

in space you also have protons some with relatively high energy. most of these come from solar wind and also can cause activation

shooting down bosses stupid ideas is #1 productivity tip for professionals (like most people on lemmy are)

if everything else fails add matrix account to your profile (to have another communication option) and reach out to admin of your instance

dude, people join irl face to face cults, of course they do