What organization has the rights to articles published by AFIPS?

02 March 2017 8,759 4 View

How complete a basis set is each of some sets of solutions for isotropic quantum harmonic oscillator equations?

05 June 2016 6,009 0 View

What if no more than 7 Poincare-group generators correlate with behavior of the Z and W bosons? Or, of the hypothetical graviton?

A fuller statement of the question: What consequences arise (regarding nature or theories) if some of the 10 Poincare-group generators do not correlate with behavior of Z and W bosons, and/or...

02 March 2015 4,541 8 View

Is there any evidence m_neutrino is not 0.09161 eV/c^2?

My attempt at theory indicates m_neutrino ~ 0.09161 eV/c^2 - for all three neutrinos. The relevant result is (m_neutrino)*(m_tauon) ~ {(m_electron)^2}*{(alpha)^(3/2)}. Here, alpha is the...

02 March 2013 2,145 19 View

How many flat space-like and flat time-like dimensions does it take to embed space time?

Curved space time has 4 dimensions. Mathematically, such a 4-dimensional space embeds in a flat space of no more than 10 dimensions. To what extent do observations or theories suggest answers to...

31 December 2012 2,222 4 View

How does the ratio of dark energy to baryonic matter evolve over time?

What is the time dependence of the evolution of the observed ratio of dark energy to baryonic matter? The density-of-the-universe ratio varies from about (zero):1 at approximately 380,000 years...

31 December 2012 8,168 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

No streamlines present in a small region inside a flow. This means exactly what?

No streamlines present means whether the flow is getting obstructed there and the velocity inside the region is zero? Or else, the fluid is trapped inside that region with a nonzero velocity?...

22 February 2021 5,249 10 View

How to solve the fatal error "the entire source was rejected" in MCNP?

Simple geometry was made having concentric cylinders bounded by a square region. The geometry has a reflective boundary. The source was defined at one point in the boundary and when it had been...

17 February 2021 4,364 3 View

How complex systems physics/statistical mechanics would be helpful for particle physics & Networking?

Recently, I've been selected for an ICTP program named Physics of Complex Systems. But, I have a keen interest in Particle Physics & Quantum networks. As statistical mechanics involved in...

11 February 2021 699 3 View

Applications of General Multiple Sums?

Does anyone know of applications of multiple sums of a sequence? I know of the Multiple Zeta values (which is a multiple sum of 1/N^s). This has multiple applications in quantum physics, QED,...

08 February 2021 8,047 12 View