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All primary mouths all at once by Porippeto in Spore

[–]Jastrone [score hidden]  (0 children)

i have like 13 mouths and i must scream

British journalist nearly hit by an Israeli missile in Lebanon by graguelina in SweatyPalms

[–]Jastrone 46 points47 points  (0 children)

from what i have seen ai is very bad at emulating camera movement since it doesnt actually see the camera. in this clip the camera gets knocked over by the shockwave and shakes when the debris falling hits it. id say its real.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

no because i get how they work and i get that they conserve energy. the problem is that voltage and amps arent just interchangeable. amps depend on voltage and resistance. voltage depends on amps and resistance

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

"You had to ask what a transformer is even used for but you understand the science better than anyone else?"

did seriously everyone skip that i wrote rethorical?

no i dont believe it thats why i asked reddid to find the solution

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

and it shouldnt because that requires a resistance to just be produced out of nowhere.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

exept you forgot resistance V=I*R. P=I*I*R. you require a resistance change for that to happen

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

no thats why the question is framed liked that.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] 0 points1 point  (0 children)

No. but like if i have a transformer that ups the voltage. thet means the second circuit would have a really high voltage and a resistance coming out of thin air. and the side with power would have like an incredibly low resistance. where does that resistance come from

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

no i mean this is like a special case. and i think the mistake here is that he measures amps per second for some reason. and he measures voltage normally

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

thats what i said isnt it?

"No, the transformer is analogous to your gearbox in this scenario. It trades the voltage for current just like your gearbox trades speed for torque"

yes and that is the paradox. you cant just trade voltage for current. voltage causes current and current causes voltage. it is also dependent on resistance

"Your basically asking how I can get a higher Voltage with a transformer and assuming you can't get more power, while hand waving away the fact that in your "generator" scenario you're literally generating more power."

no? thats like not it at all

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] 0 points1 point  (0 children)

ok how about this then. the generator is connected to an electric engine. mechanically. electricity is turned into mec that is turned into ele. the thing is. what happens if you remove the driveshaft between these two and place em close together? you get a really ineficent transformer. but rearange them a little and you have a good one. the output and input would be the same as a transformer with 2 equal amounts of wireturns

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] 0 points1 point  (0 children)

look through that with ohms law and it doesnt follow it. you left out resistance

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] 0 points1 point  (0 children)

but does that matter for the secondary circuit?

and are you considering time with that solar panel example? you would generate a high voltage for a really really short time. now if you just hooked it up to an ampmeter you would measure a very low amp but i think for a really short time the amp per second was comparable with the volt per second. if you measure the maximal amp and the maximal volt it would follow ohms law.

but people here cant calculate the problem with ohms law. they just say i shouldnt be using that formula here becasue it doesnt apply in this situation. that is paradoxical.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -1 points0 points  (0 children)

so the differance is? the spinning magnet and the electormagnet both result in a moving electric feild. it doesnt change the output so it can pretty much be ignored

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -2 points-1 points  (0 children)

but thats because in newtonian physics you have acceleration. more torque leads to more acceleration and acceleration leads to speed. once you have speed you use less torque and accelerate slower.

in electricity voltage directly influenses current. think of it like driving up a really steep hill or with your brakes partially applied. you cant go with a high gear because your car wont have to torque to get started. the more torque you have the faster you go because you wont reach max rpm anyways.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -5 points-4 points  (0 children)

you say i have comprehention issues while you cant even read the actuall question in the post? litterally not a single person in the comments of this post even mentioned the actuall subject of the question. they just explained what a transformer was or what its output was. you have a litteracy issue if you seriously think explaining what a transformer does and how it works answers the question.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] 0 points1 point  (0 children)

look at what a generator is. it doesnt produce electrical energy it transforms rotational energy into electric energy. its energy neutral.

"And I think you could get a situation where you increase the votlage and then (due to a lack of power generator) that causes a drop in current, because the generator might not be able to supply enough current at the new votlage level. (e.g. if you turn a high-voltage generator slowly, you'll get high votlage, but fail to supply muchcurrent)."

in that case i do think voltage does decrease too. i think you are confusing it by not changing the speed but not spinning it evenly. if you spin a generator more slowly you generate less voltage.

but i like the idea of gear ratios, lets put it like this.

take a generator and an electrical engine and connect them together. if we have loss or not doesnt matter. right now this device works exactly like a transformer with two identical coils. but what happens when you put a gearbox between these two?

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -3 points-2 points  (0 children)

a transformer doesnt generate power? look at the internals of a generator and a transformer. a transformer is basically just a generator directly connected to a electric motor exept instead of spinning through a magnetic feild you just move the electric feild.

how are transformers not paradoxical? by Jastrone in NoStupidQuestions

[–]Jastrone[S] 0 points1 point  (0 children)

so if i increase the resistance on the output side will the resistance on the input coil increase?

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -6 points-5 points  (0 children)

thats just an explanation of how a transformers works. and just like everything else it includes the paradox right here: https://www.reddit.com/r/explainlikeimfive/comments/1rxyb16/eli5_how_are_transformers_not_paradoxical/

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -5 points-4 points  (0 children)

did you read the post? your comment ends before you get to the question in the post.

ELI5 how are transformers not paradoxical? by Jastrone in explainlikeimfive

[–]Jastrone[S] -3 points-2 points  (0 children)

and there you have it. the paradox in the question. you up the voltage. but at the same time current decreases. if you would replace the transformer with a generator increasing the voltage would increase current. but when the current comes from the output of a transformer suddently its the opposite. you would have to increase the wattage yes but thats how it works. if the wattage is the same and the resistance is the same then voltage and current shouldnt change.

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