How can I block the coupling between adjacent waveguides?

I have a number of nonlinear waveguides, say six. I don't want coupling between specific two waveguides. Other than keeping them large distance away, what are the other possibilities to ensure no...

06 July 2014 8,805 13 View

Is parity-time symmetry a fundamental aspect of nature? Both locally and globally?

In recent times, the study of parity-time symmetry has been quite active in diverse areas of physics (i.e. quantum field theory, open quantum systems) and in optics it has been experimentally...

03 April 2014 6,864 5 View

What is the way to ensure funding in research activity?

It is seen that most of the researchers are unable to realize their ideas because of the lack of funding. So, it is very important to create or ensure a funding possibility.

08 September 2013 4,374 2 View

Can the universe be computer-like simulation?

Physicists have devised a new experiment to test if the universe is a computer. A philosophical thought experiment has long held that it is more likely than not that we're living inside a...

08 September 2013 2,121 14 View

What is void or nothingness?

In fact, is absolute nothingness under logical acceptance? How does it depend on reference frame we are talking about?

07 August 2013 8,966 88 View

What's your take on Fibonacci series?

Given the fact that it is considered one of the mysterious mathematical entity having its presence in nature, science, art so on. It is also said that it could be the secret code of nature...

06 July 2013 7,170 52 View

What is physical significance of Parity-Time symmetry?

In recent research perspective this is very important field. Parity operation is reversal of co-ordinate (x->-x, p->-p)and time reversal operation is reversal of time (x->x,p->-p, i->-i). But...

03 April 2013 9,637 3 View

What's so special about Fibonacci Series? Can it explain how everything evolved in nature?

We see Fibonacci series in the way the flowers are made in, the spiral galaxies are formed by, or even so many parts of organ of creatures are biologically evolved over time ( say hard shell of...

02 March 2013 3,005 6 View

Is Nature deterministic or probabilistic?

Keeping in mind, the contrasting classical and the quantum world.

31 December 2012 7,599 12 View

What is time? Is it discrete or continuous?

Apart from that time is a physical quantity, if we try to understand time a bit more physically and intuitively then it won't be that simple. It looks like time is a sort of inherent property...

31 December 2012 6,079 25 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 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

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View