The h Bar

0celo7

12:00 AM

@ACuriousMind you wouldn't happen to know why Schwarzschild spacetime is globally hyperbolic?

ACuriousMind

Nope

0celo7

@ACuriousMind :(

I think it's a really tricky thing to actually prove.

The only conceivable proof I can come up with is to actually construct a Cauchy surface.

0celo7

12:45 AM

I have no clue how actually do that or verify that whatever I end up creating is a Cauchy surface.

0celo7

12:59 AM

@ACuriousMind Interesting factoid: if $\mu\in\Omega^k(M)$ and $\nabla_X\mu=0$ for all vector fields $X$, then $\mu$ is a harmonic form.

DanielSank

1:51 AM

@ACuriousMind I want to say "Yes, that's worth understanding, but it's no harder to understand the better version and then you avoid confusion later."

0celo7

@dmckee Wow he's still thinking about it, he sent me another pdf with some thoughts on it

Nerd sniped!

@Slereah If I have the proof, do you want me to tell you here or just put it on the question?

If this proof is correct, it's not mine.

0celo7

2:15 AM

@Slereah Ok, pretty sure there are no spacelike hypersurfaces homeomorphic to $S^3$ in Gödel.

@Slereah I have the proof. Maybe.

But not using homotopy, because that proof is just nonsense.

Secret

5:02 AM

http://www.nature.com/news/crispr-like-immune-system-discovered-in-giant-virus-1.19462

One again that age old question, What is life...?

0celo7

@ACuriousMind What does "die Richtigkeit dieser formel wird evident in einem 1N von Q" where Q is an event in spacetime

*what does it mean

Secret

https://www.reddit.com/r/4chan/comments/49m9rh/anon_wants_to_know_who_would_win/

Fuse

Hari Prasad

6:05 AM

@0celo7 arxiv.org/ftp/arxiv/papers/1109/1109.3624.pdf

@0celo7 wonderful similarity between Lorentz force and Coriolis force

Secret

I am not really suprised that magnetic force is kinda "coordiante <insert suitable word>" like the coriolis force

(coordiante <insert suitable word> being the result of coordinate transformations)

grrr why I am so lack of vocabulary...

Hari Prasad

@Secret I think the paper above is a perfect answer to the question

0

A: Is there an underlying physical reason why the Coriolis force is similar to the magnetic component of the Lorentz force?

I came across this wonderful paper on arXiv.org which exactly answers what you asked for. "Why is the magnetic force similar to a Coriolis force?" - Antoine Royer Abstract from the paper: In this paper, it is pointed out that the underlying reason why the magnetic force is similar to a Co...

Secret

In fact, looking further, we might be able to say there's really only electric field, because magnetic fields are the result when a frame is boosted

Having said that, I still yet to fully wrap my head around this transformation because I am still nto good at handling the time component

2

My Other Head

6:50 AM

Dumb newbie question: What's LaTeX for the infinity sign? Ilooked in the MAthjax Help site Special symbols page 3 times and it's definitely not there.

Secret

\infty $\infty$

My Other Head

Tnx

NeuroFuzzy

7:14 AM

@Secret But it's not possible to always boost into a frame where there is no B-field. en.wikipedia.org/wiki/… ($B^2-E^2$ is conserved, so if it's positive somewhere the $B$ field can never be made zero)

Secret

Hmm.. it seems the general picture is more complicated than I thought
Still a while before I can fully grasp electromagnetism stuff

NeuroFuzzy

@Secret True that. I'll probably never be happy until I find some suitable "proof" that electrodynamics is the simplest force law compatible with causality and relativity.

as well as look at Feynman's formulation of electrodynamics! And lots of pictures of field tensor two-forms and what-not :p

Hari Prasad

7:33 AM

@JohnRennie Which is the best skin for kodi? (your favorite, other than the stock)

DeNiSkA

8:00 AM

Momentum hey got bit confused when the ball hits a rigid ball horizontally (neglect gravity) is momentum conserved or not?

DeNiSkA

8:15 AM

Sorry wen a a ball hits a wall is mom. Conserved or not!! My question is not over

user507974

well yea, ultimately the wall transfers that memntum to the earth

its the same amount of momentum the earth transferred to you when you threw the ball

assuming ideal condition

momentum can tranfer to atmosphere, theres sound (which im not too sure if it could affect the momentum) and possibly other dissipative mechanisms to sap up momentum

@DeNiSkA it is now =). Sorry about the mispellings, was in the process of eating 4 steak burgers

My Other Head

9:09 AM

Is there anything wrong with deleting a question if it has been voted down?

And has only attracted a one line answer

DeNiSkA

Hey if you delete question then you won't be able to post questions

this happnd to me with answers lol

My Other Head

How long for?

DeNiSkA

if you delete more than three question i think so

but still keep it like that don't delete

@user507974 hey suppose velocity before collision is v then after hitting the wall it turns out to be -v (assuming elastic collision) so I can e

So they are not equal

user507974

@DeNiSkA yes they are, once you consider the whole system

the whole system being the earth

JokelaTurbine

@Slereah @JohnRennie ...Recalling the conversation about book Gravitation (MTW) at 4.3.2016 I have now read it enough to say "This seems to be a Math-book". ie. saying "gravity is curvature of space" is no more intelligent than saying "Gravity is angels pushing the Earth",,, But in Box 17.2 there is though "Route-6; Sakharov's view" which is very good, and it's last chapter "m" I found the frontier I was looking for (Page 428, and 1206->) I will soon talk the language; Thanks & Nice day!

My Other Head

9:15 AM

If a question I asked has been voted down, then it is obviously of no value to SE, so why shouldn't I delete the question to recover points. Also, a question that has been downvoted has a higher likelihood of attracting further downvotes, losing me more points, that I can't afford

So better to kill it straight away

DeNiSkA

@MyOtherHead i think some moderator should close it

@user507974 do you think I should consider earth miving

*moving

My Other Head

And lose further points?

user507974

@DeNiSkA well if you are concerned about whether momentum is conserved or not the system locally doesnt conserve momentum but globally does, so you need to analyze it globally if you wanted to say something like "momentum isnt conserved"

My Other Head

Isn't point accrual the name of the game here?

user507974

if you are instead just looking at that as part of the problem it is better to approximate it away as a constraint and simplify your life. If doing this with differential equations we call it a lagrange multiplier

here momentum of the wall is constrained to be zero

JokelaTurbine

9:20 AM

@MyOtherHead You can do it, but this will not lead to any progress. It's just leads us all to do the same circle singing. Sort of "Finlandization". -So please don't.

user507974

and energy is conserved, so youve described an elastic collision with a wall

do not also that only 1 component of momentum is not conserved in this problem

if you hit the ball skew the other momentum components are conserved

My Other Head

@JokelaTurbine, Like I said, if a question has been downvoted, the community thinks it is of no value, so why keep it?

DeNiSkA

@user507974 yeah @user507974 oh!! The conclusion considering only ball a system momentum in horizon. Direction is no conserved , right?

user507974

could you rephrase that, not sure what you were asking

DeNiSkA

sorry for spelling mistakes

so can I conclude that momentum in horizontal direction is not conserved if i take ball as a system

user507974

9:24 AM

correct

locally conservation isnt observed

@ACuriousMind would what I be described as above be an example of symmetry breaking technically?

DeNiSkA

Great thank you!!

user507974

@DeNiSkA yw

JokelaTurbine

@MyOtherHead "the community" will never up vote anything which is against the thoughts which they are used to have. It's purely statistical phenomenon. But if we stop producing negative voted thoughts, we have actually stopped thinking by our selfs. If you don't think differently, it's doubtful if you even think at all. ...Probably I am talking over your head here, So pls. just "nevermind"; delete your answer and improve your points.

Slereah

Hello

My Other Head

@Slereah, hi. @JokelaTurbine, ok, I'll undelete and ask for migration, and see what happens.

My Other Head

9:52 AM

physics.stackexchange.com/questions/242974/… Should I delete or ask for migration to Maths.SE, or delete and post directly to Maths.SE?

Hari Prasad

10:10 AM

@Slereah HI

0celo7

@Slereah I'm fairly sure I have the proof of the claim in HE, but not via homotopy. Should I post it as an answer or not?

Slereah

Sure

Tho

Is it for Gödel

0celo7

I'm 99% sure Hawking and Ellis were fucking high when they wrote that part

Slereah

Or any simply connected manifold

0celo7

@Slereah it works for any time orientable CTC space diffeo to R^n

Secret

10:18 AM

O, I almost cannot recognise Slereah because of his change in profile pics

Slereah

Close enough

0celo7

There's just one last detail I have to clear up

Slereah

For you kids too young to remember the old internet

That is Leonard J. Crabs

The totally real lawyer that used to defend Something Awful from LEGAL THREATS

0celo7

Actually, the proof uses the fact that the curve intersects an even number of times...

That part of HE is just nonsense.

Slereah

It was my Saul Goodman :p

0celo7

10:20 AM

It's not crazy to think they have a wrong proof.

Slereah

Well Ellis hasn't answered yet

0celo7

BTW I hunted down that German paper they mention

Slereah

So who knows~

0celo7

Read it

Slereah

Does it say anything regarding that

0celo7

10:21 AM

They solve the geodesic equation and find an inertial frame or combing coordinates or some shit

Nope

Hari Prasad

@Slereah tachyon field?

0celo7

Comoving

Coordinates

Slereah

A tachyon field is a field with negative mass term

0celo7

@Slereah btw the claim in Godel is not the same as the one in HE

Hari Prasad

@Slereah I am -80 Kg

0celo7

10:23 AM

And my advisor proved a weaker version of the HE claim, but I think I can strengthen it.

Slereah

Isn't it?

I know he uses a different proof but I thought it was also about foliation

0celo7

Godel shows his spacetime is stationary but not static

The HE claim is that there are no boundaryless spacelike hypersurfaces.

Slereah

Hm

I'll have to reread it

Is that what the Frobinius part was about?

0celo7

yes

The timelike killing vector is never hypersurface orthogonal

But the claim in HE is much much stronger

They say there is never a spacelike hypersurface

That is boundaryless, that is

ACuriousMind

@0celo7 No idea what the "1N" is supposed to mean

0celo7

10:31 AM

Basically, I need a theorem that classifies the boundaryless proper hypersurfaces in R^4. If it's the compact ones + the "curved infinite 3-plane" the I have the proof.

@ACuriousMind would you happen to know anything about ^

Slereah

What about the 3-plane with a handle?

0celo7

@ACuriousMind yup, that's the part I was confused about as well.

ACuriousMind

@user507974 Well, if momentum isn't conserved then translation symmetry is explicitly broken, but one usually uses "symmetry breaking" for spontaneous symmetry breaking, which does not actually break the symmetry but just hides it.

user507974

@ACuriousMind what do you mean hides it

ACuriousMind

wtf is your profile picture, @Slereah

0celo7

10:33 AM

@Slereah as long as the complement has two connected components, that works

Slereah

Symmetry breaking is about the symmetries of the initial conditions and not the physics

user507974

because technically here you dont break momentum globally

ah

yuggib

@ACuoriousMind could you ever imagine, @0celo7 reading Gödel...sadly, he's reading the wrong papers :-P

Slereah

@ACuriousMind Leonard J. Crabs, attorney at law

0celo7

Basically I need a theorem that says the complement of boundaryless hypersurfaces in R^4 has two connected components. Like Jordan-Brouwer but stronger.

ACuriousMind

10:34 AM

@user507974 The Lagrangian is still symmetric. SSB is when the solution of the equation of motion is not invariant under the solution, so when you expand the Lagrangian around that, the symmetry gets "hidden" because it is not longer linearly realized on the new dynamical variables.

yuggib

@0celo7 1931 is a good year for a Gödel paper

ACuriousMind

@yuggib :D

user507974

@ACuriousMind is the lagrangian for a ball bouncing off an ideal wall symmetric?

0celo7

@ACuriousMind I need your topology wisdom...

ACuriousMind

@user507974 I'm not sure how one would write that except by modelling the wall to be infinitely massive and represent the wall as an infinite potential step.

0celo7

10:38 AM

It seems reasonable, a 2-plane with handles in R^3 separates it just fine

user507974

@ACuriousMind perhaps add it in as a constraint (e.g. lagrange multiplier), if this were done I would think that constraint would remove the symmetry wouldnt it

you know, before I go further what is the rigorous definition of a symmetry

ACuriousMind

@user507974 A transformation $z\mapsto z'$ of the dynamical variables $z$ such that the Lagrangian changes at most by a total time derivative off-shell.

On the level of the action: "such that the action changes at most by a boundary term off-shell"

user507974

@ACuriousMind off-shell?

ACuriousMind

@user507974 On-shell that would be a vacuous statement.

0celo7

@Slereah do you know if there's a formula for the boundary of the topological sum of two things?

ACuriousMind

10:44 AM

(On-shell, you have $\delta S = 0$ for any infinitesimal transformation of the variables, that's the definition of a stationary point)

Hari Prasad

@ACuriousMind Can space expand independent of time?

Slereah

I dunno?

ACuriousMind

@0celo7 What is the "topological sum"?

Do you mean union? :P

Slereah

@ACuriousMind : The one with taking out a disc

0celo7

@ACuriousMind whatever the thing is called that you do with spheres to get tori or some shit

Slereah

10:45 AM

Take out a disc out of each manifolds, identify the edges

ACuriousMind

Ah, connected sum.

0celo7

It's 6AM and I haven't slept at all :P

Hari Prasad

@0celo7 its 6 PM here

ACuriousMind

@0celo7 Welcome to my world

But why are you doing that? oO

Slereah

Go to bed Garfield

0celo7

10:47 AM

On a bus headed home

Can't sleep, bus is at the resonant frequency of my brain

ACuriousMind

Also, since I don't think you can cut an open sphere out such that it intersects the boundary, the boundary of the connected sum will just be the union of the boundaries

0celo7

@ACuriousMind stupid question, what's the union with the empty set

user507974

@0celo7 put on a very zen song. I once fell into a hallucegenic trance on a 4 hour busride from santa cruz to LA

ACuriousMind

@0celo7 Uh...that's a do-nothing operation

user507974

or was it 6 hrs

0celo7

10:48 AM

Hmm, ok, that makes sense.

Slereah

you add all the things in the empty set!

0celo7

@ACuriousMind do you not know a strengthening of Jordan-Brouwer?

user507974

@ACuriousMind in topology would that be the analogy of adding zero identity operations

0celo7

Unless the (k-1)-plane is compact in R^k and I'm too stupid to use Heine-Borel properly.

My god I sound like a topologist

Slereah

You became everything that you despised

0celo7

10:50 AM

No, I'm neither an analyst nor a logician

Yet

@ACuriousMind The complement of the plane in 3-space separates 3-space so there has to be some generalization, right?

ACuriousMind

@0celo7 Um...I don't think you need a strengthening, you can choose a convenient coordinate system and just explicitly write down the two connected components.

It's not hard to do that for a (hyper)plane.

0celo7

Ok but what about fucked up bendy hyperplanes

ACuriousMind

Those aren't planes.

0celo7

But as @Slereah pointed out, that's not the extent of the boundaryless hypersurfaces

@ACuriousMind they're fucked up planes

ACuriousMind

And if they are homotopic to a straight plane, it should still work.

Slereah

10:54 AM

What if they are not tho

ACuriousMind

Well, then you're fucked

0celo7

Lol

ACuriousMind

@user507974 Aye

I mean, I can build a hypersurface that consists of two "hyperbolas". That separates space into 3, not 2 connected components, I think

0celo7

Picture please

ACuriousMind

Or has the hypersurface to be connected?

0celo7

10:56 AM

Yes

ACuriousMind

Hm

Then I don't have a counterexample

0celo7

@ACuriousMind Deutscher detected

ACuriousMind

@0celo7 ?

0celo7

You forgot the "does"

Even then it's still wrong

ACuriousMind

It's not "German detected" if I just make an error that is not really characteristic of Germans :P

0celo7

10:58 AM

"Oder muss..."

Lang makes the mistake all the time

HE doesn't specify connected AFAIK, but we'll assume it.

At least, Freire's proof won't work if it's not connected :P

@ACuriousMind for the record, you do not know of a theorem which says the complement of a boundaryless hypersurface has two components?

Slereah

What about a Klein bottle

I think you need to specify orientable, too

ACuriousMind

@0celo7 No

0celo7

@Slereah it has to be properly embedded

Fucking HE

They're WAY too vague

Slereah

You can embed a Klein bottle in $R^4$!

0celo7

Is it compact and 3-dimensional?

Slereah

11:08 AM

Compact but 2D

Hm

Can you have a non-orientable $n-1$ D compact hypersurface?

0celo7

Hypersurfaces are codim 1

@Slereah do you want to know the proof

Slereah

The proof of what

0celo7

Or should I keep it a surprise

The theorem!

Slereah

Well sho

0celo7

If you can separate spacetime into two parts, you get the future and past Cauchy developments

The Godel spacetime is time orientable and has a CTC through each point

So set up light cones along a given CTC which is future directed

At a point on the hypersurface, it points into the future development

But as you follow it and it hits the hypersurface again, it points into the past development

Contradiction because it's time oriented and has to always point into the future development

Nihal Jalaluddin P

11:13 AM

Hi guys I am new to this!!

Slereah

Hm

Sounds okay?

0celo7

@Slereah The part that's tricky is you need exactly two components

The past and future developments.

Using Jordan-Brouwer you can show that if there's a hypersurface, it's not compact.

Hari Prasad

@NihalJalaluddinP new to what?

0celo7

And using magic, not homotopic to the 3-plane.

@ACuriousMind GR people define hypersurface as a properly embedded codim 1 submanifold, why is that weird?

Nihal Jalaluddin P

@HariPrasad new to h bar

ACuriousMind

11:16 AM

@0celo7 I have deleted the message you are referring to because I realized I misunderstood something.

0celo7

Ah.

Nihal Jalaluddin P

I have to log in every time when I open chat.stackexchange is there any fix(am using iPad)

ACuriousMind

The fix is not to use a mobile device.

Hari Prasad

@ACuriousMind haha

great fix

user116211

@ACuriousMind: o/

user116211

11:26 AM

@HariPrasad: wht's up!

user116211

Today was my Chem exam....

user116211

Today was my Chem exam....

user116211

Today was my Chem exam....

DeNiSkA

@user36790 chemistry sucks!!

Hari Prasad

@user36790 oh all the best

which board are you?

@DeNiSkA I just HATE chemistry

DeNiSkA

11:33 AM

@HariPrasad not only you I HATE IT A LOT!!!!!!!!

Slereah

DeNiSkA

@HariPrasad i just wanna piss on the books which i use for chemistry

ACuriousMind

Why all this hate for chemistry? It's an important part of the natural sciences.

Hari Prasad

@Slereah lol

user116211

Wow! WTF!! How could there be three lines???

Hari Prasad

11:34 AM

@user36790 G L I T C H

DeNiSkA

@user36790 you are indian!

Hari Prasad

@ACuriousMind iTS PSEUDOSCIENCE

user116211

@DeNiSkA yeo

DeNiSkA

@user36790 which state!

ACuriousMind

@HariPrasad No, it is not. You have evidently no idea what you are talking about

Hari Prasad

11:36 AM

@ACuriousMind Just kidding

i just wanted to show my rage

ACuriousMind

Jokes should be funny :P

user116211

@ACuriousMind I only like Computational Chemistry; thermodynamics; that's it.

Slereah

[Family Guy] The Rose - driving song

►

heheh

Hari Prasad

@ACuriousMind I think chemistry as a branch of physics

and all these organic stuff just sucks!

user116211

@ACuriousMind I only like Computational Chemistry; thermodynamics; that's it.

ACuriousMind

11:38 AM

@user36790 Yes, you said that already.

DeNiSkA

i think that is his device error

Hari Prasad

@Slereah Are you a family guy?

user116211

@ACuriousMind I'm not getting why my lines are appearing more than once ;/

Slereah

Aren't we all

user116211

@DeNiSkA BSNL 3G

ACuriousMind

11:39 AM

@HariPrasad If you're a reductionist, every natural science is a "branch of physics", which makes that statement rather vacuous.

user116211

@Slereah You wanted to be orphan ;/

DeNiSkA

@user36790 if BSNL 's 3G speed is what?

Hari Prasad

@DeNiSkA 2 Kbps

user116211

@DeNiSkA Faster than thoughts

0celo7

@ACuriousMind it's also more useful than physics a lot of the time.

Nihal Jalaluddin P

11:40 AM

ok i guys here i am with a pc.yeah

Hari Prasad

@NihalJalaluddinP what?

DeNiSkA

@user36790 hey BSNL's speed is always stupid

Nihal Jalaluddin P

i used mobile device untill now

user116211

@HariPrasad Hmmmm.... I'm having a decent experience with BSNL though; I work on 2-3 MBPS

DeNiSkA

@user36790 are you south indian?

Hari Prasad

11:41 AM

@user36790 I am using BSNL Broadband now

user116211

Sometimes, they give shit ;/

Hari Prasad

@DeNiSkA I am

user116211

@HariPrasad Like now.

user116211

@HariPrasad Modem

Qmechanic

@David Z and other editors: I recommend to remove the general-physics tag from a question if a more descriptive tag applies.

2

Nihal Jalaluddin P

11:42 AM

me too

DeNiSkA

If you are south indian then benglore and chennai are best for high speed internet i bet!!

John Rennie

@HariPrasad I just use the stock skin. I can see why people like playing with skins, but I don't care what the skin looks like as long as it works well.

Nihal Jalaluddin P

cochin too

Hari Prasad

@JohnRennie I love Kodi

DeNiSkA

i surf at 100mbps!!!!

user116211

11:43 AM

@DeNiSkA WTF ;/

Nihal Jalaluddin P

who is david z

Hari Prasad

@DeNiSkA I download at 1Tbps

user116211

@NihalJalaluddinP One user here; a great mod.

DeNiSkA

@user36790 yea!!!

Hari Prasad

@NihalJalaluddinP lol

user116211

11:43 AM

@DeNiSkA WTF ;/

user116211

@NihalJalaluddinP One user here; a great mod.

DeNiSkA

@HariPrasad don't lie!!

user116211

@DeNiSkA WTF ;/

ACuriousMind

"'Multiple exclamation marks,' he went on, shaking his head, 'are a sure sign of a diseased mind.'" - from Eric, by Terry Pratchett.

4

DeNiSkA

lol!!!!

user116211

11:44 AM

@NihalJalaluddinP One user here; a great mod.

Hari Prasad

@user36790 why twice?

DeNiSkA

his stupid BSNL

Nihal Jalaluddin P

is this the only physics chatting community in stackexchange?

DeNiSkA

lol

Hari Prasad

@NihalJalaluddinP you can create your own

Nihal Jalaluddin P

11:45 AM

how

Hari Prasad

@NihalJalaluddinP from kerala?

Nihal Jalaluddin P

yeah

13 years old

Slereah

Are 13 years old allowed on SE

I forget

ACuriousMind

I think 12 is the limit

Hari Prasad

@Slereah haha no age for physics

Slereah

11:46 AM

Can we ban him for fun, though

Hari Prasad

@Slereah lol. poor kid

Nihal Jalaluddin P

nooo

DeNiSkA

lol @NihalJalaluddinP you have more points than me!!!!

Hari Prasad

@NihalJalaluddinP you're not a kid?

Nihal Jalaluddin P

you mean reputation?

DeNiSkA

11:47 AM

yes

Nihal Jalaluddin P

becuase of my curiosity

am indeed a kid

DeNiSkA

woah!!! keep it up

Nihal Jalaluddin P

any non indians

can we add 2 guys named curiousone and photon

Hari Prasad

@NihalJalaluddinP what?

DeNiSkA

?

ACuriousMind

11:50 AM

@NihalJalaluddinP We do not "add" people. They come here of their own free will. Or not.

DeNiSkA

@HariPrasad are you college student?

Hari Prasad

@DeNiSkA no i'am home-colleged XD

Nihal Jalaluddin P

add some more to our chat

Hari Prasad

@NihalJalaluddinP you can't. its their wish

Slereah

>home colleged

DeNiSkA

11:52 AM

@NihalJalaluddinP well it is there wish to join or not !

Nihal Jalaluddin P

how many of u r physicits

Slereah

Are you getting a degree in creationism

DeNiSkA

@HariPrasad haha

Hari Prasad

@Slereah yup this Autumn

Nihal Jalaluddin P

sry about the spellings

can i ask a doubt

DeNiSkA

11:53 AM

everyone here are physics lovers

Hari Prasad

@NihalJalaluddinP yes you CAN

Nihal Jalaluddin P

why is lhc so big

Hari Prasad

@NihalJalaluddinP lol

Nihal Jalaluddin P

am serious

Hari Prasad

@NihalJalaluddinP you shouldn't be

DeNiSkA

11:54 AM

@ACuriousMind you were true indian use doubt instead of saying question

Nihal Jalaluddin P

ooh sorry

waiting for answers

Hari Prasad

@NihalJalaluddinP LHC is too small compared to my backyard

DeNiSkA

lol

ACuriousMind

@NihalJalaluddinP What kind of question is that? It's as big as it needs to be to do what it's intended to do.

Hari Prasad

@ACuriousMind poor kid

Nihal Jalaluddin P

11:57 AM

ok then

Slereah

I do hope that wakefield plasma acceleration allows for mini LHCs

Nihal Jalaluddin P

thought u would help me

DeNiSkA

oh!!!!!

Hari Prasad

@Slereah 400 GeV proton beam?

ACuriousMind

One reason is certainly that the magnetic fields you need to get a charge go around in a circle get stronger the smaller the radius of the circle.

Hari Prasad

11:58 AM

@NihalJalaluddinP go to wikipedia

Nihal Jalaluddin P

i need some ideas for google science fair

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