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The FLRW metric, in the case of positive scalar curvature, is: $ds^2 =- c^2 dt^2+a(t)^2left(dw^2+sin^{2}w(dtheta^2+sin^2theta dphi^2)right)$. The Birkhoff’s theorem states that "any spherically symmetric solution of the vacuum field...
1Physics Asked on 2 years ago
Here, the natural length of the string is $l_o$, and pulling the string up by $x$ increases its...
1Physics Asked on 2 years ago
I'm aware of the common misunderstanding about action and reaction canceling each other; they don't because they don't act on the same object. This is about a more subtle...
2Physics Asked on 2 years ago
This is a thought experiment where I have made a "C" shaped hole inside diamond. The refractive index $(mu)$ of diamond is 2.45....
4Physics Asked on 2 years ago
Equation of principal angles: $$tan 2theta_p=frac{2tau_{xy}}{sigma_x-sigma_y}$$ Equation of principal stresses:$$sigma_{max}, sigma_{min} = {sigma_{xx} + sigma_{yy} over 2} pmsqrt{ left( {sigma_{xx} - sigma_{yy} over 2} right)^2 +...
1Physics Asked on 2 years ago
Not entirely sure if this question goes on this site, but I think it covers this one more than the others. I need to record some audio of human speech...
1Sound Design Asked on 2 years ago
I have a piezo contact microphone which I am using to detect running water in a pipe. I intend to use this signal to determine the time at which water...
0Sound Design Asked by Groger on 2 years ago
Let's say that an attacker wants to search websites for RFI/LFI vulnerability with a script, he's fuzzing the URL with a list of remote/local files. And he prints the headers...
2Information Security Asked by user226295 on 2 years ago
Okta recently sent out an email to admins about changes to their new device detection strategy. According to them:Due to browser advancements in anonymous web browsing, JavaScript fingerprinting techniques...
1Information Security Asked by Indigenuity on 2 years ago
This is what I have so far but it is pretty open.*filter:INPUT DROP [0:0]:FORWARD DROP [0:0]:OUTPUT DROP [0:0]-A INPUT -p ipv6-icmp -j ACCEPT-A INPUT -i lo -j ACCEPT-A OUTPUT...
0Information Security Asked on 2 years ago
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