/sci/ - Science & Math

>>1994093
me no understanda youra pica

>>1994111

can someone explain to me why this wouldnt work?

it would fucking work

>>1994129

>>1994129
nope, if you have a short rod, and push 1 end, it appears that the other end moves instantaneously, it doesn't hough, there is some delay. the rod slightly compresses, and the movement is sent along it as a wave, at very close to the speed of light, its so fast, it seems instantaneous. but a very long rod, several light years long, and this wont happen instantaneously, the impulse will reach the other end at slightly slower than the speed of light.

>>1994142
>implying it will move faster than the speed of sound

>>1994131

why wouldn't this work?

>>1994129

Compression Waves, kinda thing.

>>1994110

Team of Scientists won the Nobel prize for 'inventing' atom-thick layers of graphite, by picking pencil lead up with sellotape. Has all kind of uses.

Is a similar thing like this possible?
But actually one that does work.

>>1994153
if its a vaccuum, heat can't be absorbed into the cube, so it wouldn't work as an icecube.

>>1994156
Explanation as to how this won't work?

>>1994165
Probably friction

>>1994153
it will work, just like this one

it is just the trolls like >>1994162 that will always give their bullshit explanations to disprove the obvious

>>1994165
each ball entering have to lift the entire water column by the same volume it displaces. This energy amount is equal to or greater than the energy the floating gives.

>>1994172

If you had a vacuum ball in a really dense liquid, and had a really low friction coefficient (LUBRICANT. EVERYWHERE), then wouldn't the upward force overcome the friction?

>>1994152
wont it?
hmm, if i have a very long steel rod, (held up with 'Y' supports at various places along the way...) i stand at one end of a football pitch, 2 people at the other, one is standing with his back against the final 'Y' stand a centimeter away from the end of the rod. the other peson is standing next to him.
I will push the rod forward a few inches, at the same moment as i shout "GARETHH!!!" the person with his back to the rod, has been instructed to raise his hand immediately as soon as he feels the rod jab him in the back, the second person has been instructed to raise his hand when he hears the word' gareth'

... i think rod guy will raise his hand first...the steel rod must be faster than sound... i think it would be. i've shouted to mates accross the park before, and theres a good second or so before they react... i rekon steel rod will be faster.

>>1994156

All perpetual motion machines are impossible. Just follow the energys the see why. Where is the energy coming from that causes the balls to float to the top. Its the potential energy of the water due to gravity. But where did that potential come from? The water had to be lifted up by the ball at the bottom entering the tank. Then energy you put in is the energy you get out.

The ball has to be forced into the bottom, lifting a column of what above it increasing the potential energy of that water. That potential energy then goes back into the ball. But due to friction and what not, some energy will be lost forever, and the machine will eventually stop running.

>>1994168
there is no fucking way that would work

>>1994182
sound travels faster through solids
but no where near the speed of light

>>1994182

The Speed of Sound in a solid is faster than the Speed of Sound in the air, due to increased density, I think?

problem?

>>1994183
We just need to find a way how to force it into the water.

>>1994179
Got it. Thanks.

>>1994188
>>1994190
ah ok, so the rod would be faster, but still nowhere near the speed of light,
kk thnx.

>>1994193

That would be an external source of energy and it would no longer be a perpetual motion machine. However it would run.

>>1994206
anti magnet shields don't exist.

problem, energyfags?

someone should post the Kroto one like this:


1st: graduate student sitting in chair saying:


"hey harry, look at this shit we found in the ICR MS"


2nd: "harry" (harold kroto) with troll face looks at black mass of goop in a box shaped MS-Paint design (to be the ICR-MS)


3rd: zoomed in image of little socker balls, nanotubes, and shit...


4th pic: Nobel prize with graduate student looking sad in background
the point?


graduate students essentially never (like 1 time out of 100) get even partial credit for a nobel prize.


Prof goes:


here try this for your Ph. D...


you spend 6 years working....


you produce results.


professor gets nobel prize...


professor never once touch an analytical instrument, flask, or keyboard with his own skin.

>>1994206
Bitches don't know 'bout my Mu-metal.

>>1994142
The mass would be so great for such a long pole that the force required to make it move even a couple of inches would be huge.

why wouldn't this work?

>>1994238

so why wouldn't this >>1994206
work then?

>>1994258
not if there is no friction (and there isn't in space...so the 100 light year thing, rod would move quite easily.

>>1994273
No, it has nothing to do with friction. It's inertia, which is part of F = ma.
Newton's words:

"The vis insita, or innate force of matter, is a power of resisting by which every body, as much as in it lies, endeavours to preserve its present state, whether it be of rest or of moving uniformly forward in a straight line."

The greater the mass the greater the objects resistance to change in motion i.e. the more force required for an acceleration (F=ma).

>>1994273
>implying a 100 light year rod isn't heavier than a star
>implying there is no gravity

>>1994265
It actually would. Oh and improved version:

>>1994290
Wrong pic.

>>1994293
That last frame should read "Problem, electromagnetism?"

>>1994309
electromagnetism is just a theory

>>1994323
Then how do you explain the first law of magnets if electromagnetism is just a theory (a Gauss)?

>>1994330
this is a law of Special Magnet Theory and it is more than just a gesus. The whole troll physics is based on it

>>1994388
This could work. And yes I mad.

>>1994388
i want one!

>>1994391
>>1994406

It would work, but you will die once it pops and free falls down.

>>1994391
Not in a practical way. It's the exact same as saying "enough balloons would be able to lift you off the ground."
It is true, but you'd need literally millions of them.

>>1994388
>>1994388
>>1994388
close enough

problem reality?

1. Built time machine.
2. Go to past and kidnap Hitler.
3. Go back to present and release Hitler.
4. Get rid of muslims with nobody making nazi and holocaust comparisons.

Contributing.

>>1994809
ok, this made me spit out my tea.

>>1994738
...
wouldn't this work?

it wouldn't solve global warming, but if construction technology is advanced enough it's possible to have a cold-as-fuck "space tube" like that right?

a vacuum connected to the vacuum of space

just made this one.

seems plausible bra

>>1995583
good lord, hes saved us all

or this?

I'm laughing like mad

>straight
>physics

Pick one.

The acid will make it stronger.

>>1994153

radiation (infrared for instance) carries heat through vacuum

>>1994165
the net component of all forces acting on the balls is sadly zero

MONOPOLE!!!

Are you mad? Did I win?

>>1994334
>>1994098
>>1994206
>>1994215
>>1994262
>>1994290
>>1994323

>>1994286
gravity has nothing to do with it, only mass agains the force to accelerate it

>>1994388
lol

u jelly

>>1994388
This could work if the engineering is a bit idiotic, only the suit would inflate A LOT

poor man's LHC

>>1994471
You could also split the big marshmallow in more than one little marshmallow, thus not requiring any bigger microwave!

I read about that on NPR.org. A physicist made a sheet of carbon that was a single atom thick. they ended up winning the nobel prize.

Problem, oil industry?

>>1996514
This may actually be a good idea for saving energy

>>1996533
But that's wrong, you idiot.
Even if the fan was 100% efficient and everything was ideal it would still only compensate for the extra drag.

>>1995870
that wouldn't work.

>>1996542
still means extra less you spend on oil

>>1996608
He's saying that it would only compensate for the extra power required to keep the car moving, due to the extra drag. I.e. net zero.

Problem "speed of electromagnetic waves are a constant" enthusiasts?

Problem, speed of light is a constant enthusiasts?

>>1996542
Actually, no. If the wind was faster than the car, it would be possible. See sailing ships.

>>1996887
That's not how relativity works.

>>1996913
Now he's going relatively fast.

>>1996934
I love you

>>1996809
Car is still moving? Check
Battery is still powering? Check
Problem?

>>1994093
my physics lecturer knows those guys personally. hooray

>>1996934
V=(V_1+V_2)/(1+(V_1 V_2)/c^2 )

V=(50+c)/(1+50c/c^2 )=(50+c)/((c+50)/c)=1/(1/c)=c

>>1994093

This thread has some of the funniest shit I've ever seen on 4chan. Grats guys, dying laughing over here.

>>1997099
No, you missed where I increased the speed of light by 50 in some places, it should look more like this.

V=(50+c)/(1+50c/(50+c)^2 )=(50+c)/((c+50)/(c
+50))=1/(1/(c+50)=c+50

You guys are seriously the best...

I love these threads. Thanks, everyone.

Best troll physics thread ever. SOMEONE SAVE IT.

>>1997612

Archive, bro?

>>1994491
A priest died like this in Brazil. It was even a Darwin Award, see:
http://darwinawards.com/darwin/darwin2008-16.html

About working or not, yes, it would fucking work. But you need lots of helium.

For lifting ~70kg [human body], you would need 11,4kg He, that's a fucking lot, calculate it for 25°C.

this could have been made a shit load simpler but I was thinking too much

u jelly

>>1997714
I...
I would like to see research on the feasibility and possible uses for this.

troll problems = solved

>>1998359
>mfw

mine is the best

>>1998359

Holy shit. This could work.

>>1998359
doesnt create downward current . l2helicopters

>>1998638
The thing I love about this one is that the instructions are all perfectly feasible, and horsepower is obsolete anyway. It's 100% accurate, apart from the speed lines in the last panel.

>>1998650
disregard that, I suck cocks

>>1998680

That's actually similar to the concept of Project Orion.

>>1994131
Did anyone else see this as a box with a long windy dick prodding another box?

>>1998604


uhhh yeah dude.


its called geothermal energy.


they have a geothermal plant in Hawaii


they pollute the ecosystem by dumping shit tons of hot water into the ocean.

Someday, I will make a homebrew sandbox game that implements these troll physics of yours, and you'll download it and play it, and only then will you be sorry.

I'd like an answer on this one.

>>1998727


0/10

>Congrats, your request has just triggered the archival process for thread 1994093!

>>1998732
Ok I don't get whats going on here but..fuck here's what I want to ask;
You see, there's this anime (Voices of a Distant Star)
>In the middle of the anime proper, she sends an email to Noboru (which shows the date 2047-09-16), with the subject "I am here", saying "to the 24 year old Noboru, from the 15 year old Mikako" which would only reach him 8 years, 224 days and 18 hours later, and just hopes it reaches him.

Ok fuck I don't know how to explain it, but the girl remained young while the guy grew old.
Fucking anime man, fuck magnets.
Anyway if someone manages to get my point, well..explain it to this retard.

>>1998846
Either way if you have time watch that shit and cry like a bitch.

>>1998732
this actually works, me and my class did it a few days ago in science

>>1998725
Shit nigga
I don't understand shit about quantum mechanics. Can you give an easy explanation.
And how do I learn more about this shit (online?). It's like miracles and magnets to me.

>>1998902

>>1998902

This couldn't work because you wouldn't be able to tie the other end of the string to a generator one handed.

>>1998900


it has nothing to do with quantum mechanics. it is a result of mathematics. experiment simply agrees with the math.


you know how normal numbers can do things like:


multiply:

A x B = B x A....


well, the things you use in quantum mechanics to measure stuff... which are called Operators... which basically just means "a bunch of derivatives and plus signs cobbled together, as well as the way these derivatives and plus signs affect certain types of functions".... Operators DONT multiply like normal numbers

in general:

A*B =/= B*A


in order for 2 things to be measured at the same time, then both things must "commute" with one another.


basically, it means that you can write down equations for both with the same "point of view"


commute means: A*B = B*A for the operator.


if this is true, then both can be "viewed" at the same time...


if they are not equal, then they cannot be viewed at the same time.


The position of a particle does not commute with the momentum of a particle.
the Troll pic exploits the fact that, if you know one exactly, then the other one must be infinitely uncertain (equal probability for all possible values, or a flat distribution)...

"sit on" the electron means set its momentum equal to a constant, absolute value...


then the uncertainty in position is infinite, and you have no idea where the particle is.

>>1998926


also, wouldnt the photons just emit/reabsorb from the inner surface of the bag continously without imparting any net momentum?


if the photons DID impart net momentum, wouldnt they just rip through the bag at any time?

I made Troll Science topic yesterday. Looks like OP copied me. lol

i think this is the same thread

Is there anything Troll Science can not do?

Troll Science is Best Science.