11.23.2 Greatest hits from previous weeks

11.23.2.1 What do the X and Y axis stand for in the Fourier transform domain?
11.23.2.2 Mathematica 10.0.x freezes in Initializing kernels
11.23.2.3 Find eigen energies of time-independent Schrödinger equation
11.23.2.4 Entering numbers in Scientific Notation?
11.23.2.5 QR Code in shopping cart handle
11.23.2.6 How to make a Spherical Cow?
11.23.2.7 How to perform a multi-peak fitting?
11.23.2.1 What do the X and Y axis stand for in the Fourier transform domain?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=85139

In Wolfram Mathematica the function  Fourier  has the following declaration 
 
 Fourier[list] 
 
 
And after a list is given to the ... 
[numerics] [fourier-analysis] [faq]
 
asked by user253956 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29958 Score of 33
answered by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 Score of 80
11.23.2.2 Mathematica 10.0.x freezes in Initializing kernels

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=92931

Bug caused by paclet update and fixed by paclet update. 
I updated to Windows 10 and have been running Mathematica fine on it for over a month.  For some reason, it has just stopped working. I don't ... 
[bugs] [front-end] [system] [kernel-startup] [paclets]
 
asked by mitcheljh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6783 Score of 80
answered by ilian https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=145 Score of 100
11.23.2.3 Find eigen energies of time-independent Schrödinger equation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32293

I'm trying to get the eigenvalues of a one dimensional time-independent Schrödinger equation, 
 
$-\frac{h^2}{2m_0}\frac{d^2\psi}{dx^2}+U(x)~\psi=Ei~\psi$ 
 
where U(x) is some potential and Ei is the ... 
[equation-solving] [physics] [parametric-functions]
 
asked by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 Score of 54
answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 Score of 49
11.23.2.4 Entering numbers in Scientific Notation?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=36792

I need to play with a lot of powers such as  10^-3 .  1E-3  does not work for it. Is there any short form for it? 
[number-representation]
 
asked by hhh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2000 Score of 86
answered by Joe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44710 Score of 4
11.23.2.5 QR Code in shopping cart handle

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26268

This week, the market people from my work wanted to put QR codes in shopping cart handles, but when they tested it, the QR code did not work. I noted that the cylindrical curvature (even small) ... 
[image-processing]
 
asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 Score of 203
answered by halirutan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=187 Score of 197
11.23.2.6 How to make a Spherical Cow?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=125043

Being a theoretical physicist, I always have a great respect for Spherical Cow. So I thought about making one myself. I am not sure how can I create (something considered to be the simplest!) this ... 
[geometry] [image3d]
 
asked by Sumit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8070 Score of 75
answered by andre314 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5467 Score of 83
11.23.2.7 How to perform a multi-peak fitting?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26336

I am wondering how to implement the multi-peak detecting and fitting in Mathematica. Following is an example of fitting the data using three peaks (such that the data ~ peak1 + peak2 + peak3). 
The ... 
[fitting] [data] [peak-detection]
 
asked by Everett You https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1389 Score of 58
answered by Silvia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=17 Score of 57