/sci/ - Science & Math

>>4790837
>>4790837
>mfw my joker is better then yours

>>4234251
Fine, just because I am feeling generous.

For simplicity use vector notation, say:
Vector a = (x1, y1), vector b = (x2, y2).
http://en.wikipedia.org/wiki/Vector_%28mathematics_and_physics%29

Next, you need the concept of the "norm". If c is a vector c = (x3, y3), then |c| = sqrt(x3^2+y3^2)
http://en.wikipedia.org/wiki/Euclidean_norm

Lastly, you need the concept of the "dot product". Call the dot product of a and b, a.b
http://en.wikipedia.org/wiki/Dot_product

There are two equal ways to get the dot product of two vectors.
1) a.b = |a|*|b|*Cos[theta]
2) a.b = x1*x2 + y1*y2

Set 1) equal to 2) and solve for theta. This will be the angle between the vectors, a and b (what you are looking for).

Anyother questions?

>>3166948
>christian

>>2355032
agree

>>2273768

>>2235492
sERIOUSLY GUIZE, when does a thread die?
Does it have a soul?

>>2206131
Becuase the actual defintion of momentum has nothing at all to do with fucking mass.

The problem is with your reasoning. You learn some very very simple dumbed donw physics formulas in high school, that only have valididty in very certain simple systems. You then expect your dumbed down knowledge to work for all physics....LMAO

It's like old people learning about computers, say they learn windows XP, then they magically expect every computer to work exactly like there XP computer. It is fucking ridiculous!

>>1324254
Nice question, Never heard of the term "feynmans field thoery", I think you just mean current QED in general.

Yeah, virtual particles are the particles responsible for any "force" transmission. The photons propogate the EM charge, the W,Z propograte the Weak charge, and the Gluons the strong charge.

As far as QED goes, this thoery has pretty much been proven. QED is one on the best thoeries out there, with thoery and observations in perfect agreement.

Technically, I am sure there are other theories out there, just like some people still believe the earth is flat. But it is pretty much all nonsesne. QED is perfect for its range of validity, and answer all questions it relates to.

Sounds like a laugh...don't feel like shifting through the engineering (faggotry) in /b/.
Post a link here!

>>1284047
Particles travel in beams.
We refer to them as "bunches".
There are many many partciles in a "bunch".

Particle detection is a very big field.
Is there any specific particle dectection you are refering too? What kind of random instrument noise are you talking about?

>>1261264
>douchey mcgee

I KNOW WHO YOU ARE....LMAO

>>1247286
Yeah, the newest version of the Ipod nano doesnt let you take pictures, only videos. I had to take a snaps from them using vlc.

>>1171635
Well, your mom thought it was big enough.

Actually I'm just bored, and being "agressive" and watching everyones response amuses me.
I guess this would be "trolling", if I was speaking bullshit. But you cant "troll" if you are telling the truth? can you? Am I a troll?

>>1164783
i THINK I MAY JUST CALL YOU A FAGGOT AND SEE WHAT HAPPENS

Here I go..............wait for it.....wait for it

faggot! yeah, ghostbro is a faggot! At least thats what Vampire Bro told me? is it true?
do you know any science?