Can someone explain how does one go from frequency domain noise to multipole domain ?

I want mathematical answers.

07 August 2019 8,087 2 View

What is the difference between Hubble sphere,particle horizon and event horizon ?

Please explain conceptually

31 December 2017 3,950 0 View

What is the physical meaning of anti commutation operators in quantum mechanics?

Physical meaning of commutation operators are understood.

05 June 2016 1,644 6 View

If kinetic energy is a scalar then why does it change under galilean transformation?

.

01 February 2015 2,381 0 View

Does one need to genius in theoretical physics or can hrd work make him successful?

.

01 February 2015 3,602 1 View

What mathematical back ground is required to learn string theory

.

11 December 2014 8,086 0 View

Does one have to be absolute genius like edward witten to shine in theoretical physics?

I dont think so there is something like genius or is it

10 November 2014 2,043 2 View

Why we dont talk about forces in quantum mechanics?

10 November 2014 2,926 1 View

Is the schrodinger equation a postulate of quantum mechanics or can it be derived?

I think it can be derived.

08 September 2014 2,425 22 View

How do i calculate iso curvature three point correlation function for non Gaussianity in Inflation models?

I want to about field correlation function and iso curvature correlation functions.Please give some references for detailed calculation

01 January 1970 7,826 0 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Are there methods for automatically mapping floodplains, fans and terraces?

I want to map these river geoforms with as little subjectivity as possible. I have a high resolution DEM generated by drone data.

22 February 2021 7,800 3 View

Why the nucleic acid gel melted after running for 30min?

Hi all, I proceed with nucleic acid gel electrophoresis recently several times, but a wried phenomenon is they always melted after running over 30min. My gel concentration is 1% percentage...

22 February 2021 9,896 3 View

Do I need to introduce HFD to ob/ob mice to obtain a T2DM model?

I am planning to work on T2 diabetic animals and check the efficacy of probiotics. My initial plan is to fed B6 animals with HFD for a while. But now, I have the chance to work on ob/ob mice. My...

18 February 2021 6,896 3 View

What are the options for global scale hydrology DEM?

Hello, I am working on a global scale hydrology GIS project delineating global watersheds and doing some data analysis. I have in the past used hydro1K from the USGS that cover the entire world....

18 February 2021 5,109 5 View

Can I use a categorical covariate in a Generalized Linear Model in SPSS v.26?

Hello everyone, hope you are well. I am planning to use a Generalized Linear Model in SPSS. I would like to add gender to the model as a covariate, however from what I have read, only continuous...

14 February 2021 8,937 4 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

Mixed ANOVA or Multilevel modeling?

Hi everyone, I'm having some questions about choosing the right test for my experiment and I hope I can find help here! Here are the settings of the experiment: 1. participants are randomly...

14 February 2021 1,028 4 View