@EmilioPisanty Well, I was thinking of some ways to publicize those tags via social media or community ads. I haven't yet thought out a structure for those tags though.
I maynot be experienced as you guys but I think that most of the physcist in 'niche' area may either don't get enough time or don't find incentive in participating in QA,maybe that's the cause of problem?
Anonymous
@EmilioPisanty Well if some knowledgeable people (in certain areas related to those tags) do happen to visit the site once in while they would come to know that we need more answerers/experts for those tags
@ShaVuklia hi again whats new living on the wild side there? which reminds me, so whats amsterdam like anyway? :)
Anonymous
@EmilioPisanty I don't have any hard evidence. We have to try it out to check if it works. If we don't see any improvement we can just remove those ads anytime.
@Blue You have to consider that a) someone has to design these ads and b) if they do nothing, they take ad time away from others who actually do advertise something people didn't already know about
Since the ads are only shown on the site, I think it's pointless to advertise specific tags - everyone who will see the ad and is interested enough in the topic to click it will already watch that tag, anyway.
@Blue so... you don't have any evidence that there's a problem, and, if there was, you don't have any evidence that running ads would solve it, but you still want the community to agree with you that we should take ad time away (from things the community has agreed are worth advertising) to favour the one tag that you've cherry-picked as maybe having a problem?
← thinking about Sha serving me coffee now, would defn visit your cafe for some coffee :)
Anonymous
@EmilioPisanty I had a feeling that there is a problem from my personal experience. But the last 1 year statistics does tell a different story. I don't know what to say. If no else feels there is a problem (and I am not saying that they should) it's fine. I don't want to quarrel. It was just a friendly suggestion from my side.
@vzn not really. Sha was just short for Shadow (Shadow isn't always considered an acceptable name, but Sha is), and Vuklia is kind of a play on "vuk", which means wolf in Bosnian
Just to mention that if any user wants to explore or contribute or have discussion on Dynamical Systems,Non Linear Dynamics and Chaos then there is a chat room dedicated to this,although I admit that the room is not so active.
@vzn haha it is:) and no, they both did something in art! but they're both "analytically minded", if that makes sense, so I can get where I get my appreciation for math from :P
you do like computer stuff right?
do they also teach you incredible ways to get your uni books? :P
@ShaVuklia alas that is a worldwide challenge. my suggestion is to look for equivalent (free/ open) content on the particular subj/ topic youre trying to learn, which is now pretty large/ vast... eg opencourseware etc
I have a question,when doing electroststic shielding,do you need to shield just the line of sight or does the electric field go around obstacles ( copper shielding )
@Sweeper Please be patient - SE is not designed for instant response and 16 hours is a pretty short timespan. However, your question is a bit unclear - you ask "is it enough" but you don't really specify what you want to achieve.
@Avantgarde You know, I have never felt great appreciation for that stuff. I have listened to some, but most often it's so centered around the rapper's personal life, neighborhood, thug life, money and fame that I don't get it. I like abstract hip hops, eg Madvillainy or the first mixtape of Death Grips (unironically, not memetically).
I wonder if I must put the shield all around object A,or if its enough to put it only in the direct line of sight between object A and charged object B
Are you sure you arent mistaking electromagnetic field ( photons ) with static electric field? Becose I know when doing radio frequency shielding that you indeed must totaly cover the object to shield it,I was thinking that static electric charge would be differrnt
@BalarkaSen Aah. I didn't know. Even I am not that big into drone (yet). But if you like minimalistic, repetitive sounds, then this is what you're looking for
By the way, before I go, I found the album I should've given you quite some time ago. Minimalistic, atmospheric and probably the best album to sleep to - https://youtu.be/YSwIahX6t6I (with the most beautiful cover art)
@Sweeper Assuming time-harmonic fields, if the wavelength is much smaller than the length scale of the object, then you can assume very little diffraction where a line of sight obstacle is enough to shield the object. As you lower the frequency (bigger wavelengths) diffraction around the edges becomes more significant. (And therefore at the static frequencies non line-of-sight effects are important too)
Make stupid jokes, talk systems security, https://t.co/j3RdEScp3t + https://t.co/rzDVLlLn6y, write Scifi, sysadmin, and use Oxford commas. Sprezzatura.they/them
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@yuggib I have a real Hilb sp. $\mathscr H$ and $H\ge 0$ is self-adjoint. I define $H^{1/2}$ using the functional calculus. Given $u\in D(H^{1/2})$ I want a sequence $(u_n)\subset D(H)$ such that $u_n \to u$ and $$\langle H^{1/2}u_n,H^{1/2}u_n\rangle\to \langle H^{1/2}u,H^{1/2}u\rangle.$$ This supposedly follows from "the spectral theorem" but I don't see what they mean
so let's say I have two commuting operators $A,B$ that I diagonalise simultaneously
$A|a,b\rangle=a|a,b\rangle$ and similarly for $B$
and I have a third operator $C$. I'd like to know under what conditions I can write, for example, $\langle a,b|C|a',b'\rangle=\langle a|C|a'\rangle\langle b|b'\rangle$
Hi to all. I have a question/reference request : if anyone has any idea it will be helpful. In describing the transformation properties of the pions in chiral perturbation theory we demand that the goldstone fields of the pions transform non linearly under the hole symmetry group, let's call it G. The spontaneous symmetry breaking implies that the goldstones-pions transform linearly under the unbroken group, let' s say H, which is a sub-group of G... continue
the problem Im actually studying seems to suggest that, under some conditions, we have $\langle a,b|C|a',b'\rangle=\langle a|C_1|a'\rangle\langle b|C_2|b'\rangle$
but Im lost
because my $C$ does not seem to be a tensor product
Hi to all. I have a question/reference request : if anyone has any idea it will be helpful. In describing the transformation properties of the pions in chiral perturbation theory we demand that the goldstone fields of the pions transform non linearly under the hole symmetry group, let's call it G. The spontaneous symmetry breaking implies that the goldstones-pions transform linearly under the unbroken group, let' s say H, which is a sub-group of G... continue
Then the argument goes as follows: the pions should transform under the action of G by a function f(g, pions) such that this f(g,0) lives in the quotient space G/H and thus the function f maps the the elements of the quotient space to the pion field variables, and the function is obtained by G by right multiplication of the unbroken subgroup: g'=hg. So geometrically the pion fields may be viewed as the coordinates of the quotiend space G/H . continue
So, to understand the hole subject mathematically I need to understand the mathematics of quotient spaces as used in physics and why this is relevant to the gepmetry of the pions. Any references or suggestions? Thanks.
@ConstantineBlack I think "mathematics of quotient spaces" is a bit vague. I think you're simply looking for references on spontaneous symmetry breaking, no?
@ACuriousMind Well, maybe, if they have a detailed discussion about the use of a quotient space so I can read why this certain transformation f fixes the transormation properties uniquely(by discussion I mean something more than a statement of the form: the mapping f fixes the properties of the pions per se).
Lewtwyler discusses this in Principles of Chiral Perturbation Theory and the standard mathematical paper is of Weinberg on Phenomenological Lagrangian but that paper takes to much mathematical knowledge(for me I mean) as granted so it' s a bit difficult to follow.