Archiu:Wave packet.svg
Tamany d'esta previsualisació PNG de l'archiu SVG: 800 × 579 píxels. Atres/s resolucions: 320 × 232 píxels | 640 × 463 píxels | 1024 × 741 píxels | 1280 × 926 píxels | 2560 × 1852 píxels | 5478 × 3964 píxels.
Resolució completa. ((Image SVG, nominalment 5478 × 3964 pixels, tamany d'archiu: 29 kB))
Summary
| Description |
English: Illustration of a wave packet. |
| Date | |
| Source |
Own work based on: Photon paquet onde.png:  |
| Author | Oleg Alexandrov |
| SVG development |
Licensing
|
This work has been released into the public domain by its author, Oleg Alexandrov. This applies worldwide. In some countries this may not be legally possible; if so: Oleg Alexandrov grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Source code
% Illustration of a wave packet
L = 1.7; % 2*L=length of domain
A = 1.2; % max amplitude
K = 1.3; % gaussian param
fast_wl = 52;
slow_wl = 4;
N = 500; % num of data points
lw = 40; % linewidth of curves
X = linspace(-L, L, N);
%Y = cos(X*slow_wl)./(1 + (X/K).^2);
q=1.5;
Y = A*cos(abs(X).^q*slow_wl).*exp(-K*X.^2);
num_P=1; % how many periods to keep
Y( find (abs(X) > ((2*num_P+0.5)*pi/slow_wl)^(1/q)) )=0;
Z = Y.*cos(fast_wl*X);
% KSmrq's colors
red = [0.867 0.06 0.14];
blue = [0, 129, 205]/256;
green = [0, 200, 70]/256;
yellow = [254, 194, 0]/256;
white = 0.99*[1, 1, 1];
black = [0, 0, 0];
figure(1); clf; hold on; axis equal; axis off;
lw2=0.7*lw;
plot(X, Y, 'color', red, 'linewidth', lw2, 'linestyle', '--')
plot(X, -Y, 'color', red, 'linewidth', lw2, 'linestyle', '--')
plot(X, Z, 'color', blue, 'linewidth', lw)
saveas(gcf, 'Wave_packet.eps', 'psc2') % save as eps
%plot2svg(Wave_packet.svg') % save as svg (need the svg package for that)
Historial de l'image
Puncha en la data/hora per a vore l'image tal i com es mostrava en eixe moment.
| Data/Hora | Miniatura | Dimensions | Usuari | Descripció | |
|---|---|---|---|---|---|
| actual | 06:40 2 dec 2007 | | 5478 × 3964 (29 kB) | wikimediacommons>Oleg Alexandrov | Tweak |
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