lol this one is pretty interesting. I will ask my professor about it. Information travvels faster than speed of light in this case what is paradoxal.
well this works, it just needs to be higher up, its called a Dyson sphere
its a theoretical construction to harvest energy and NASA is looking for this in the universe as a sign of advanced civilisations
I'm pretty convinced it could definitively work out as crazy as it sounds.
Doing this anywhere within earth's gravitational pull wouldn't work. The weight of the rope would exceed the force needed to rip it in half, and in trying to pick up slack, you would be breaking it often. Steel cable could only get you about a mile or two without supports before snapping under its own drag.
the speed of "push" is almost equal to the speed of sound, no it would not be instant, the particles still have to push other particles within whatever it is that you have applied force to
I wanna see your degree that says you know shit about magnets.
>durr hurr cansr
>saves thumbnail of reaction image
i hope its normal for irony to sting you like this
you would see yourself as you are... 20 years later.
as in the mirror wouldn't even show up, looking out from here, until its been sitting out there long enough for the light bouncing off it to reach us
I never really understood why this wouldn't work - I know it's illegal, but how exactly would they catch you? At most, all they'd know is that the letter came from somewhere in a general area, likely spanning a couple of neighborhoods.
This is actually true. If it becomes cost effective to fusion up some synthetic gold, it could actually devalue its naturally forming twin. This would happen sometime in the far future. Unless companies are able to pull off some dumbfuck marketing campaign where they can charge more for the naturally occurring one.
Is there even a reason to do so? Gold doesnt have that many uses, and cheap synthetic gold will absolutely ruin the only reason that makes gold valuable - rarity. It would just become shit metal that nobody wants, excxcept for electronic industry, and even they dont need much.
Sorry but it's not the vacuum of space that causes the weightlessness it's the distance from the planet or anything else with enough mass to have a noticeable gravitational pull. The effect of the vacuum would only be you suffocating or your house collapsing from outside pressure. And you couldn't even scream for help because sound doesn't move through a vacuum.
Other problem is going to be mass. Bigger parcel here = higher initial cost.
Might not be that way elsewhere, but it'd be cheaper to mail 1 well-wrapped potato here than 1 potato and 5 helium balloons.
Other than that, the logic is sound.
Because strong magnets near the brain mess with synapses and you lose control of your movements. Only very strong magnets do this, but you would need an incredibly strong magnet to move a projectile traveling at that velocity also that soldier with the magnet could no longer fire his own gun or even hold it whilst it contained ammo. And all that is ignoring the fact that it would only work on bullets coated in magnetic metals such as the full metal jacket because lead isn't magnetic.
this is what you do when you need to find the area beneath a graph.. you divide it into rectangles and repeat to infinity, basically. So this wouldn't be too stupid, and you would approach 4 as you approach infinity in amount of times you've removed the corners
A cable carrying electricity would make more sense. Since the wire is filled with electrons pushing each other, one push from the first electron would move the electrons at the end of the cable at the same time. It could light a light bulb and send Morse code.
Assume at the start they both have $20 for a total of $40.
>Both put $20 in box.
A = $0 B = $0.
>Guy A sells the box to B.
A = $30 B = -$30
>Guy B opens box and gets the $40 inside
A = $30 B = $10
Same amount of money in the end, but B loses $10.
Even if they move as slow as a snail, the last electron in the cable would reach the end at the very same moment the one at the start of the cable starts to move. THE CABLE IS FILLED WITH ELECTRONS DAMMIT. Pic. related.
Well the stick would just be insanely long, but would only need to travel that inch or whatever to poke whoever was on the other end. So the stick would just travel at whatever speed you we're moving it.. but the "information", if you for example used morse my poking, would travel faster than the speed of light.. in theory.. i think.. but of course in practice, it would need an insane amount of energy to move that stick, so I don't really now how it would work in practice
>area BENEATH a graph
so shouldn't we be using a square INSIDE the circle?
we could - and that square's circumference would definitely not be constant, but instead growing - and hopefully converging against something.
the problem is that that something is not 4.
but rather, pi.
I could go into detail but it really takes literally 2 hours to explain and mathematically prove every part. I literally held lectures about this in university.
This is actually a proof used in Calculus II, for something unrelated but still, so whoever said this probably took Calc II and thought it would be fun to fuck with people online.
As you infinitely reduce the area between the square and the circle by half, you create infinite boxes times 2. Disc Integration and Integrals shows us this.
I felt something was off but couldn't pinpoint it.
Not any of these posters, but the reason it isn't 4 is because repeating this process to infinity does not make it perfectly round. An polygon with an infinite number of sides is still not a circle, even though the diagram makes it seem that way
A stick that is that long would not move as a single object, which is counter intuitive because we don't interact with sticks that are long enough to make the lag time noticeable. Normally the energy we put on one end of a stick takes an absolutely immeasurable time to reach the other end when it's only a foot long. But when it's going to Mars, the the other end of the stick would take much much slower than the speed of light to feel any sort of force you put on your end.
It's not like the atoms of objects are physically touching, it's all just a series of electromagnetic pulses from atom to the next. Nothing is truly "solid", every atom is disconnected from each other and so it takes time for the effects of force to propagate from one atom to another.
The troll bit is that A puts in 20, B puts in 20. A then has a with 40. B buys it for 30. So A spent 20 on the box, but got 30 so hes up 10. B put 20 in at start, the spent 30, so hes out 50, but the box has 40, so he only 10 out now.
TL;DR B basically just ends up giving A 10.
dis be mah nigga
It works if you take a regular 2^n-nom.
The area p_n of that polynom then is p_n= 2^(n+1) h_n sqrt(1-(h_n)^2 ), with h_1= 0.5*sqrt2 and h_(n+1)= sqrt((1+h_n)/2).
Then, p_n is a converging series, and lim(n to infty) p_n is pi.
A dyson sphere supports its own weight by leaning on the other half which is pulled in the other direction. A soft material like the rope would'n even curve with the earth while pulled.
"converging", thanks I couldn't remember what is was called. And I see what you're saying, but i honestly don't see the difference between wether the square is inside or outside the circle
? (I'm not a math genius, but I have studied it on a fairly high level). But all I see here is the amount of times we cut the corners going towards infinity and thus the perimeter of the square converging towards the circumference of the circle, being pi of course, while the perimeter is still 4.. i'm not saying you're wrong, because of course this can't be true, i'm just saying that I personally don't see what is wrong in this approach of the problem or my idea with comparing it to how we find the area beneath a graph
will stores actually give you money if you get a negative price throught coupons and such? i feel that i have seen the people in this get a negative price before
the company I work for do a size to mass conversion so big but light parcels get charged more than small parcels of the same weight.
and then they do retarded shit and fuck it up
Nah, If you're falling at 100 mph and you jump you're only decreasing your fall speed by the speed you'd gain from jumping, so like 4 mph? There was a concept train that travelled 200+ mph and would shoot passengers inside these pods the opposite direction at the same speed as the train was traveling effectively cancelling out the momentum letting people get off the train, Mythbusters did It I think
>my idea with comparing it to how we find the area beneath a graph
I think what you're thinking of is the Riehmann integral, and that's only a thing if the lower sums (rectangles you mentioned) and the upper sum (slightly taller rectangles) converge against the same number.
same with the circle - only if the inner and outer squares converge against the same number, either (or rather, both) are actually pi.
see above. the series presented in the pic is only half the proof - it proves that 4 is an upper bound for pi.
now if you found a series of squares INSIDE the circle, which also happened to converge to 4, then the pic would be proof that pi=4.
protip - you can't find such a series because "pi=4" is false.
simple proof for "pi < 4"
instead of cutting off squares from the corners, cut the corners diagonally. now circumference suddenly is less than 4. qed.
When the balls push trough the seal they lift water up. They do the same work as they recieve back when floating up (actually they get back less work when you consider losses)
this would work but the magnet would need retractable pikes and each time the vehicle was attracted the magnet the magnet would have to be shut off and places farther ahead by the crane and pikes planted again and repeat
like in a mag-lev train??
it wouldnt fuckin work
an elevator is different because you dont have the strength to move it when you jump up, if you tried it with a chair it would just hit the ground slightly faster and youd hit the ground at the same speed
This is all well and good and I know how to calculate the area under a curve using integration, and how to apply it to three dimensional object thus calculating the volume of the object.. but i do not see how any of this proves the image wrong.. (but thank you though for actually providing information, i just can't stand those brian from family guy ish people who raise themselves above others on no ground at all except for knowing a teeny tiny bit about something and then just trying to sound smart)
just incase anyone cared i made a picture to explain whats going on.
A standard horseshoe magnet would not affect lead. A toroidal coil ac magnet would. Of course, the problem then becomes powering the thing. That and the havoc it would wreck on the iron in your bloodstream.
I care, and that is a well done illustration. However, it is not the fact that it never becomes a circle, but rather a polygon with an insane amount of sides, that I fail to understand. But rather the fact that you are reducing the space between the square with which you started, and the circle. So I know that you will never get the exact circle no, but you will come closer and closer, so I dont understand why the perimeter isn't converging/diverging? (i don't remember which one it is) towards pi
The shape this makes has segments outside the circle. By subdividing them, you're making twice as many segments that are half as long. The area covered by this shape is always larger than the area of the circle as well.
This doesn't prove that pi equals 4, but it does prove that pi must be less than 4.
...which isn't really useful for anything.