Search
There isn't a definitive answer on the upper bound of quantum computing's processing abilities, but here's what we know: Classical Computers vs. Quantum Computers: Regular computers: Their proc...
A computer can store some number $n$ of bits in memory, and it can perform some number $m$ of essential computational operations, such as addition or multiplication, and rewrite those bits to memor...
We commonly say that something has a weight, which is synonymous with a mass. Things have a weight because the force of gravity is relative to something’s mass. Subatomically, what is mass? There ...
If you are already heating the space to maintain a constant temperature, and if both humidification methods result in the same eventual humidity, then the net energy used ends up the same. Any ene...
There are a couple different types of indoor air humidifiers. Most notably, the naive steam humidifier with a heating element, and then ultrasonic humidifiers. Now, heating water to create steam o...
Let w be the price of water that I'll use to dilute. Forget that. Unless you are in extraordinary circumstances, the price of water is so low compared to the vinegar as to be irrelevant. How do ...
Presuppose that I need vinegar of $c$ concentration, where $c$ < any concentration listed below. Let $w$ be the price of water that I'll use to dilute. How do I deduce which concentration (of V...
Starting from the classical osmosis experiment, a U-shaped tube with a semi-permeable membrane, I would like to consider the case when the solute added to one of the compartments (labelled A) is co...
No, this site is about physics, not chemistry. Whether something is on topic anywhere else has no bearing on it being on topic here. That said, there are some gray areas between physics and chemi...
Are questions that are borderline chemistry on topic? Since there is not a Codidact community for Chemistry (yet?), I thought the next best match would be Physics Codidact. In particular I wanted ...
No, you don't need the highest setting. Just stirring gently is enough, anything more won't help much. Salt dissolves very well in water. It dissolves so well, that an area of very salty water for...
When we launched this community, we did not yet have the ability to set different reputation grants for different categories. We've had this for a while but we failed to follow up before now, sorr...
The typical 'most simple' derivation of the gravitational wave equation (GWE) starts by a perturbation of the 'background metric' $\bar{g}$ to get $g_{\mu\nu} = \bar{g}_{\mu\nu} + h_{\mu\nu}$, wher...
Suppose we have a gravitational wave which obeys the equation: $[G_{tt}-c^{2}G_{xx}]h_{\mu\nu}=0$ Lets take the case where $h_{\mu\nu}\ne0$ so we are left with the classical wave equation.Suppose...
The most famous formula of this kind is Bloch's $T^{3/2}$ law: $$M(T)=M_0 \left( 1-\left(\frac{T}{T_c}\right)^{3/2}\right)$$ It is a low-order approximation for the spontaneous magnetization in i...
There is no one answer. The dimensions are inferred from the fact that $\left| \psi\right|^2$ represents a probability density. Perhaps the most straight-forward way is to consider the normalizatio...
Gravitational waves can be derived from the non-linear Einstein field equations and since they are by definition waves they must obey the wave equation: $u_{tt}=c^{2}u_{xx}$ but in General Rela...
$x(t)=a\cdot \sin(t\sqrt{k/m})$ is the only solution that satisfies $x(0)=0$. If you then impose $x(c)=0$, you only get solutions for certain values of $k$. These values are the eigenvalues of the ...
Lets say we have a mass connected to a spring.Assuming not any friction the ODE which describes the system is $m\frac{d^{2}x}{dt^{2}} = -kx$ We can set 2 Dirichlet boundary conditions $x(0)=0$ an...
Think about how that is supposed to work. It seems you want two photons to somehow combine into a single photon and nothing else. That means the output photon must have the combined energy of the...
Imagine two equivalent (e.g. same frequency) photons colliding with each other head-on. The linear momentum of the system is $0$ because each photon's momentum has the same magnitude but is pointin...
In the context of quantum field theory, why is it impossible for two photons (or other massless bosons like gluons) to collide and produce a single photon? This kind of a process is supposed to be ...
I'm trying to understand the uncertainty principle and its implications for particle measurement. From what I've read, it seems that the principle states that we cannot simultaneously know the exac...
Question I was wondering what force make drop slow down? Does every time a drop push toothpick back into bottle? And of course how to solve it. Struct This is a bottle be pierced by a wooden too...
How do I deduce which setting suffices for mixing table salt + COLD tap water? Measure it. That really should have been obvious. My gut feel is that any reasonable agitation will work about equa...
