Why in classical mechanics, it is necessary to deal with the quantities which are constant in time?

11 December 2015 2,588 19 View

What is the difference between microscopic and phenomenological approach to study nuclear physics?

If we are using a quantum mechanical framework to study the various nuclear structure properties of various set of nuclei, then how can we say that the approach used is phenomenological or...

08 September 2015 7,412 0 View

If the bm1 plot shows less even-odd sttagering pattern. Then what it means in context of physics?

For the odd z nucleus BM1 values shows less odd-even staggering pattern. How can we interpret this in terms of physics and for triaxial nuclei why this pattern should be more pronounced?

04 May 2015 1,427 0 View

While doing calculations on some nuclei, why would I have obtained reduced transition probabilities for some isotopic mass chain of nuclei?

While observing the pattern so obtained for all the isotopes, it is found that B(M1) value for one of the isotope is showing just opposite trend than the rest of isotopes. What would be the reason...

07 August 2014 3,485 0 View

Why don't electrons emit radiations in stationary orbits while revolving around the nucleus?

As we know that, accelerated charged particle radiates energy while moving. why is this not so in the case of electron revolving in the stationary ortbit?

07 August 2014 8,987 15 View

Is there any difference between nano-crystals and nano-dots?

07 August 2014 1,739 5 View

How Hartree Fock approximation method is applied to nucleus?

Also tell me the density matrix approximation?

07 August 2012 2,439 6 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