Image:Wave packet.svg

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Wave_packet.svg‎ (SVG file, nominally 5,478 × 3,964 pixels, file size: 29 KB)

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Description	Illustration of a wave packet.
Source	Self made, based on Image:Photon paquet onde.png. Released in the public domain.
Date	06:28, 2 December 2007 (UTC)
Author	Oleg Alexandrov
Permission ( Reusing this image)	See below

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

% 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, 'colour', red, 'linewidth', lw2, 'linestyle', '--')
plot(X, -Y, 'colour', red, 'linewidth', lw2, 'linestyle', '--')
plot(X, Z,  'colour', 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)

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	06:40, 2 December 2007	5,478×3,964 (29 KB)	Oleg Alexandrov	(Tweak)
	06:38, 2 December 2007	200×200 (29 KB)	Oleg Alexandrov	({{Information \|Description=Illustration of a en:Wave packet \|Source=Self made, released in the public domain \|Date=~~~~~ \|Author=~~~ \|Permission=See below \|other_versions= }} {{PD-self}} category:wave mechanics category:quantum mechanics [[)
	06:28, 2 December 2007	200×200 (29 KB)	Oleg Alexandrov	({{Information \|Description=Illustration of a en:Wave packet \|Source=Self made, released in the public domain \|Date=~~~~~ \|Author=~~~ \|Permission=See below \|other_versions= }} {{PD-self}} category:wave mechanics category:quantum mechanics [[)

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The following pages on Schools Wikipedia link to this image (list may be incomplete):

Wave

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