Physics Questions, Problems & Solutions : TransWikia.com ~ Page 342

Smaller droplets == smaller surface tension?

When applying soap liquid on the inner surface of swim goggles, the surface tension of the water decreases and small droplets of water on the surface won't form, therefore the...

Asked on 05/13/2021 by gravedigger

2 answer

Is it always possible to infer photon distribution from photon statistics?

Say we are detecting light in the time interval $(t,t+T)$ that is described by the intensity $I(t)$. Let the integrated intensity in this interval be given by:...

Asked on 05/13/2021 by Superfast Jellyfish

0 answer

Eletromagnetic waves & photons

I was thinking about how to reconcile the picture of the eletromagnetic wave as a changing electromagnetic field and as a collection of photons. If i have a charged particle,...

Asked on 05/12/2021

3 answer

Equations of motion/ Boundary conditions in presence of defect

Cosider the following Lagrangian $$mathcal{L} = Theta(-x) left( frac{1}{2} (partialphi_1)^2 - V_1(phi_1) right) + Theta(x) left( frac{1}{2} (partial phi_2)^2 - V_2(phi_2) right) + delta(x) left( frac{1}{2} (phi_1 partial_t phi_2...

Asked on 05/12/2021 by Ramsey

0 answer

Is there a way to measure the amount power of visible light against a surface?

If you were to hypothetically shine a single beam of light that is specific in its power source and output efficiency against a wall across a specific measurable distance. Is...

Asked on 05/12/2021

1 answer

Moment of inertia of a yo-yo

Considering the yo-yo like two CDs with a hollow cylinder between them, what is the moment of inertia of that object? The axis that I must choose...

Asked on 05/12/2021

2 answer

Driving Euler-Bernoulli equation for a compressible viscous flow from continuum conservation equations of an steady-state flow

My understanding of Euler-Bernoulli (EB) equation is that it is the energy balance equation in Lagrangian form for an inviscid, incompressible and steady-state flow . From different sources I see...

Asked on 05/12/2021

1 answer

Near and far field EM radiation

When we talk about radiation, we often talk about the near and far field radiation. For the near field, the Poynting vector falls off like $1/r^3$ and the far...

Asked on 05/12/2021 by Physics2718

2 answer

Does bringing slits closer together increase or decrease intensity of interference pattern

Does bringing the slits together affect the intensity of maxima for double slit experiment and also the diffraction grating? Does decreasing slit width affect the intensity of the maxima for...

Asked on 05/12/2021

1 answer

Why in the nuclide chart the $Q_{alpha}$-value (the energy released in an alpha decay) is listed even for stable nuclides?

When I was studying some graphs I started comparing data with the nuclide chart of https://nds.iaea.org, and I noticed that even for nuclides that aren't typically alpha...

Asked on 05/12/2021

0 answer

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