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Do you know this formula?

  1. Jan 7, 2013 #1

    micromass

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    Do you know this formula??

    Let's try to make a little game out of scientific formulas. The idea is that I post a scientific formula which is named after a famous scientist. The goal is to guess the scientist(s) associated with the formula.

    The person who answers correctly, gets to present a new formula. Etc.

    So let's start easy:

    [tex]\sigma(x)\sigma(p)\geq \frac{\hbar}{2}[/tex]
     
  2. jcsd
  3. Jan 7, 2013 #2
    Re: Do you know this formula??

    Heisenberg!
     
  4. Jan 7, 2013 #3

    micromass

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    Re: Do you know this formula??

    Of course! :approve:

    You can put up a new formula if you want!
     
  5. Jan 7, 2013 #4
    Re: Do you know this formula??

    Ok, here it goes a nice (but long) one, with a nice name too:

    [tex]
    \frac{d}{dt}P_{m\rightarrow n}(t)=2\pi |\langle n|H_{int}|m\rangle |^2 \rho(E)
    [/tex]
     
  6. Jan 7, 2013 #5

    jtbell

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    Re: Do you know this formula??

    Would that be Fermi's Golden Rule?

    Here's one that's perhaps not so famous, but has a name that makes me smile when I see it:

    $$\frac {n^2 - 1}{n^2 + 2} = \frac{4 \pi}{3} N \alpha$$

    Hint: it's named after two people whose names are very very similar.
     
  7. Jan 7, 2013 #6

    George Jones

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    Re: Do you know this formula??

    I was uncertain, but I thought you might be looking for a deviation from standard nomenclature.
     
  8. Jan 7, 2013 #7

    Dr Transport

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    Re: Do you know this formula??


    Clausius-Mossotti???

    How about this:
    $$ \left\langle \alpha' j'm'|T^{(k)}_{q}|\alpha j m \right\rangle = \frac{\left\langle \alpha' j'||T^{(k)}||\alpha j \right\rangle}{\sqrt{2j'+1}}\left\langle kjqm|kjj'm'\right\rangle $$
     
  9. Jan 8, 2013 #8

    jtbell

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    Re: Do you know this formula??

    That's one name for it, but not the name I was thinking of.
     
  10. Jan 8, 2013 #9

    micromass

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    Re: Do you know this formula??

    Lorentz-Lorenz equation?

    No idea about Dr Transport his formula though...
     
  11. Jan 8, 2013 #10

    Dr Transport

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    Re: Do you know this formula??

    hint: one of the people this formula is named for wrote a very well known group theory book
     
  12. Jan 9, 2013 #11

    George Jones

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    Re: Do you know this formula??

    Wigner-Eckart Theorem.

    I recognized this as soon as I saw it, but I have been too lazy to think of my own puzzle.
     
  13. Jan 9, 2013 #12

    George Jones

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    Re: Do you know this formula??

    Okay,

    [tex]\int \liminf_{n\rightarrow +\infty} |f_n| d\mu\leq \liminf_{n\rightarrow +\infty} \int |f_n|d\mu[/tex]

    Thanks, micromass.
     
  14. May 19, 2013 #13

    mathwonk

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    Fatou's lemma.


    chi(L) = [e^(ch(L)).Todd(X)](dim(X)). (3 names)


    Here's a rather obscure one physics students of Paul Bamberg at Harvard in the 1960's all knew:

    617-495-9560 (Bamberg's number)
     
    Last edited: May 19, 2013
  15. May 19, 2013 #14

    mathwonk

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    Wannabe: I just noticed you have to answer the previous one to get to post a question.
     
  16. May 19, 2013 #15

    WannabeNewton

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    Oh, well in that case I have no idea what your formula is lol...Newton's 2nd law is out of the question innit :)? (I deleted my post by the way)

    EDIT: is it the Hirzebruch–Riemann–Roch theorem?
     
    Last edited: May 19, 2013
  17. May 19, 2013 #16

    mathwonk

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    yes! (I got it wrong myself, thinking it was Grothendieck Riemann Roch.)
     
  18. May 19, 2013 #17

    WannabeNewton

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    Yay! Ok mine will still be ##\xi_{[a}\nabla_{b]}\kappa = 0##
     
  19. May 19, 2013 #18
    zeroth law of black hole thermodynamics

    ##E = -\lim_{S_{\alpha}\rightarrow \mathcal{P}}\frac{1}{8\pi}\int _{S_{\alpha}}\epsilon_{abcd}\nabla^{c}\xi^{d}##
     
  20. May 19, 2013 #19
    Why, that's the good ol' Bondi energy, of course!

    Here's mine: ##y=mx+b##
     
  21. May 19, 2013 #20

    WannabeNewton

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    Is this the Noetherian current obtained from Lorentz transformations? Seems like it.
     
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