Thursday, June 10, 2010

Ejs Open Source Brownian Motion Gas Model Java Applet by Professor Paco & Hwang « on: March 19, 2010, » posted from:Singapore,,Singapore

Updated 20 Sept 2016
https://play.google.com/store/apps/details?id=com.ionicframework.brownianapp183853


Updated 04 August 2015
JavaScript version
http://weelookang.blogspot.sg/2015/08/ejss-brownian-motion-model.html
run: Link1Link2
download: Link1Link2
source: Link1Link2
author: Francisco Esquembre, Fu-Kwun Hwang, lookang, tina
author EJS: Francisco Esquembre


Ejs Open Source Brownian Motion Gas Model Java Applet by Professor Paco & Hwang
« on: March 19, 2010,  » posted from:Singapore,,Singapore http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1484.

picture of a 19 April 2012 version with 1 to 20 possible (this case is only 3) large particles as request by Jake the frodo on Today 19 April 2012 at 02:53:12 am http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1484.msg9150#msg9150
http://weelookang.blogspot.sg/2010/06/ejs-open-source-brownian-motion-gas.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_brownianmotionwee.jar
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_brownianmotionwee.jar
author:  paco, fu-kwun hwang and lookang

animated gif of Brownian Motion from the Applet



Ejs Open Source Brownian Motion Gas Model Java Applet by Professor Paco & Hwang, now remixed by lookang so i can learn from examining the codes legally because the condition of use is attribution of original authors.

Reference:
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=178.msg791#msg791

Brownian motion

What?

This is a simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions.
This is 1st simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions

Origin

In 1827 the biologist Robert Brown noticed that if you looked at pollen grains in water through a microscope, the pollen jiggles about. He called this jiggling 'Brownian motion', but Brown couldn't work out what was causing it. The direction of the resultant force is constantly changing. At different times the pollen grain is hit more on one side than another, hence the random nature of the motion

How?

The Brownian motion of a particle in a liquid is thus due to the instantaneous imbalance in the combined forces exerted by collisions of the particle with the much smaller liquid molecules (which are in random thermal motion) surrounding it. http://en.wikipedia.org/wiki/Brownian_motion
This is a simulation of Brownian motion of 5 particles (yellow) that collides with a large set of 800 particles leaving 5 blue trails of random motion with one yellow particle with a red velocity vector represented.

Why?

The mathematical model of Brownian motion has several real-world applications. An often quoted example is stock market fluctuations. http://en.wikipedia.org/wiki/Brownian_motion


Full screen applet
Java Simulation above is kindly hosted by NTNUJAVA Virtual Physics Laboratory by Professor Fu-Kwun Hwang
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1484.0
alternatively, go direct to http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=28.0
Collaborative Community of EJS (Moderator: lookang) and register , login and download all of them for free :) This work is licensed under a Creative Commons Attribution 3.0 Singapore License
Author: Francisco Esquembre, Fu-Kwun and lookang (this remix version)

This work is licensed under a Creative Commons Attribution 3.0 License









This is a simulation of Brownian motion of 5 particles (yellow) that collides with a large set of 800 particles leaving 5 blue trails of random motion with one yellow particle with a red velocity vector represented.

This is 1st simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions

This is 2nd simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions

This is 3rd simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions



Wikipedia contributions:

This is a simulation of Brownian motion of a big particle (dust particle) that collides with a large set of smaller particles (molecules of a gas) which move with non-uniform motion in different random directions.

This is a simulation of Brownian motion of 5 particles (yellow) that collides with a large set of 800 particles leaving 5 blue trails of random motion with one yellow particle with a red velocity vector represented.


Wikimedia contributions
descDate Name Thumbnail Size User Description
05:38, 19 April 2012Brownianmotion5particles150frame.gif (file)814 KBLookang
05:31, 19 April 2012Brownian motion large.gif (file)455 KBLookang(100 frames)