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About Arne Rosenfeldt[edit]

1977 birth


1988 computer language basic

1992? Computer language.C++ (Ansi C, with variable declaraions in the middle in the function and other C++ comforts)

interest in computer Graphic

2002 diploma in physics

Occupation with lasers and UHV.

Other Wikis[edit]

And in the German Wiki and the Commons and de.unecyclopedia I have the same user name.


The wiki content is free. So a profit organization can distribute it, but do not allow advertising on wikipedia itselft. Do not upgrade the server, do not hire more people, do not complicate the software. If an edit takes an hour to arrive at the server, edit wars will stop and a good edit needs more than one hour anyways, you will have to live with typos though.


On what base is an analogy choosen? I have not played with Barbie, so I think humans are quite complicated, they may even be more complicated than math. But most people have a built in Intuition (knowledge) about humans and use it for pets, but even for wild animals and for the genesis. Pretty long stretch, in my opinion.

Looking for a home outside Wikipedia: Application of the fresnel equation on multilayers[edit]

The following m-code can calculate multilayers as needed for optical coating, polarizer#Thin_film_polarizers, ellipsometry, resist:

%2006-10-14: Code checked with Freesnell and and references therein
layer=[1 0;3+i 0.2;2+i/4 0.2;3+i 0.2;1 0]; % n+i*k width
si=sin(60/180*pi); wavenumber= 2*pi/0.263;

%%%%%%%%%%%%%%%%%%%%%%%%%% Core{
snellsius=wavenumber*sqrt( layer(:,1).^2 - si^2);
fresnel  = {    @(k,r) [        k(1)   -      k(2)         2*  k(1)  ]  /  (     k(1)  +      k(2)   ) , ...    %s-polarization
                @(k,r) [        k(1)*r -      k(2)/r       2*  k(1)  ]  /  (     k(1)*r+      k(2)/r ) };               %p-polarization

G=zeros(s*2,s*2);adr=@(l,d) l*2+d-1;  % Global matrix
for p=1:2       %polarization
        for l=1:s-1     %layer
                for d=0:1       %initial (due to fresnel equations traditionally formulated in push fashion)
                        E=fresnel{p}(snellsius([l+d l+(1-d)]),layer(l+(1-d),1)/layer(l+d,1)) * exp(i*snellsius(l+d)*layer(l+d,2));
                        for f=0:1 %final. flattening
                                G( adr(l+f,1-f) , adr(l+d, d) )=E(f+1);
        t  =  inv(eye(2*s-2,2*s-2)-G(2:2*s-1,2:2*s-1)) * G(2:2*s-1,[1 2*s]);
        t  =  [1 0 ; t; 0 1];
        for l=1:s       %unflattening
                Eg(l,:,:,p)=permute([t(adr(l,0),:) ; t(adr(l,1),:)],[3 1 2]);
%%%%%%%%%%%%%%%%%%%%%%%%%% }Core

for l=1:s
        E=fresnel{1}([snellsius(1) snellsius(l)],layer(l,1)); %should work the same for fresnel{2}
        Flux_into_layer(l,:)=(1-abs(E(1))^2)/abs(E(2))^2*abs(Eg(l,:,1,1)).^2;  %specialize for (coming from the bottum, unity s polarzation). All (layers, directions)
        Flux_gain(l,:)=sum(Flux_into_layer(l,:))  *  (abs(exp(i*snellsius(l)*layer(l,2)))^2-1) ;


Particle-Wave Duality[edit]

... as the hardest part right at the beginning of quantum mechanics compared to relativistic effects like spin, gauge fields, Schrödinger equation, wich are later or just lengthy:

True, when quantum mechanics was new, some physicists thought that it put humans back into the picture, because the principles of quantum mechanics tell us how to calculate the probabilities of various results that might be found by a human observer. But, starting with the work of Hugh Everett forty years ago, the tendency of physicists who think deeply about these things has been to reformulate quantum mechanics in an entirely objective way, with observers treated just like everything else. I don't know if this program has been completely successful yet, but I think it will be.

from [[1]]

Inlet cone[edit]

moved to discussion page