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Young's Two-Slit Experiment Without Slits

It ought to be possible with modern technology to replace the two slits of Young's two-slit experiment with a single emitter which is moved laterally (at random coin toss) to...

Asked on 01/05/2021 by Neej

3 answer

Where does a photon('s energy) originating from the sun's core spend most of its time?

AFAIK the photons inside a star essentially perform a random walk until they leave. Considering these factors:closer to the core the curvature of the sphere that seperates "closer to the...

Asked on 01/05/2021 by kutschkem

1 answer

Green's functions for composite fermions

In a regular fermionic system (such as a Fermi liquid), the Green's function is given by $$ G({bf k},,omega)=frac{1}{omega-epsilon_k-Sigma-idelta}$$ where $Sigma$ is the fermionic self-energy. My question is...

Asked on 01/05/2021

0 answer

Ignoring enthalpy contribution in free Gibbs energy definition

The Gibbs free energy is defined as follows: $Delta G = Delta H - TDelta S$ My professor and I are currently working with a simplified definition of ...

Asked on 01/05/2021

0 answer

Assumptions in a Moving Fluid

I saw this paper recently "On Integrals of the Hydrodynamic Equations That Correspond to Vortex Motions" by Hermann Von Helmholtz. It can be found here. In this...

Asked on 01/05/2021

0 answer

R134a state at rest

I'm a mechanic and I've had a question for some time regarding AC systems that no one in my garage seems to be able to answer (or care actually). R134a...

Asked on 01/05/2021 by Mike Granger

3 answer

Noether's 2nd Theorem and Local Gauge Identities

I am trying to derive the so called Gauge Identities:begin{equation}D_nufrac{delta S}{deltaphi} = 0end{equation}Where $D_nu$ is an operator involving derivatives and $frac{delta S}{deltaphi}$ are the usual Euler-Lagrange...

Asked on 01/05/2021

1 answer

Rough estimate of the distance from a plane to the last molecular collision

I am reading the textbook Transport Phenomena by Bird, Stewart & Lightfoot. In chapter 1 they derive expression for viscosity of gases at low density from the kinetic theory. They...

Asked on 01/05/2021

1 answer

In a collision of two billiard balls, is there a threshold energy that is required in order to create a black hole?

In a comment on this answer, user PM 2Ring says,If two billiard balls have enough kinetic energy in their centre of mass frame they can create a black hole,...

Asked on 01/05/2021 by asking_anonymously

1 answer

How to draw quiver plot for complex-valued electric field?

I have a matrix of complex numbers for the electric field inside a medium. Since I want to draw the quiver plot of these elements, it will be completely different...

Asked on 01/05/2021 by Yatish Chandra

2 answer

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