Solar Photon Random Walk

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written by Drew Onken

The Solar Photon Random Walk Model simulates the path of photons in radiative transport as they escape from the Sun. Photons do not travel in a straight line, but rather collide with larger particles and get redirected. This simulation models that process using a random walk in polar coordinates. The random walk parameters are adjustable to match different models of the structure of the sun, or the user can input their own values.

The Solar Photon Random Walk Model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_comp_phys_photon_random_walk.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).

.jar

download 1737kb .jar
Last Modified: June 12, 2014
previous versions

2 supplemental documents are available

.jar

Solar Photon Random Walk Statistics Model
This model adds the feature of running numerous photons and compiling average statistics for these photons.
download 1133kb .jar
Published: July 26, 2011

Solar Photon Random Walk Poster
Poster describing the Solar Photon Random Walk Model given as part of the Computational Physics class at Davidson College
download 139kb .pdf
Published: July 26, 2011

1 source code document is available

.zip

Solar Photon Random Walk Source Code
Source Code for the Solar Photon Random Walk program.
download 53kb .zip
Published: July 26, 2011
Rights: This material is released under the GNU General Public License Version 3.

Subjects	Levels	Resource Types
Astronomy - Fundamentals = Properties of Light - The Sun = Solar Structure Thermo & Stat Mech - Probability = Random Walks	- Upper Undergraduate - Lower Undergraduate	- Instructional Material = Simulation

Intended Users	Formats	Ratings
- Learners - Educators - General Publics	- application/java	Currently 0.0/5 Want to rate this material? Login here!

Access Rights:: Free access
License:: This material is released under a GNU General Public License Version 3 license.
Rights Holder:: Drew Onken
Merlot:: pending
Keywords:: EJS, Easy Java Simulations, photons, radiation, radiative zone, random walk, solar, sun
Record Cloner:: Metadata instance created July 26, 2011 by Mario Belloni
Record Updated:: June 12, 2014 by Andreu Glasmann
Last Update when Cataloged:: July 26, 2011
Other Collections:: The PSRC

The Open Source Physics

Easy JavaScript

Author: Wolfgang
Posted: March 20, 2013 at 4:01PM
Source: The Open Source Physics collection

Francisco Esquembre and his team are working on a JavaScript version of EJS. The new version should make it easy to convert EJS models to EJSS models.

» reply

Dashcode widget for random walk simulation?

Author: Jamie Formato
Posted: March 20, 2013 at 2:53PM
Source: The Open Source Physics collection

I'm putting together an iBook for my astro class. I would like to include this simulation in the body of the text as an interactive widget. Apparently this can be done through apples Dashcode- do you have any plans to create a JavaScript widget with this code?

» reply

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ComPADRE is beta testing Citation Styles!

Record Link

<a href="https://www.compadre.org/astronomy/items/detail.cfm?ID=11349">Onken, Drew. "Solar Photon Random Walk." Version 1.0.</a>

AIP Format

D. Onken, Computer Program SOLAR PHOTON RANDOM WALK, Version 1.0 (2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343).

AJP/PRST-PER

D. Onken, Computer Program SOLAR PHOTON RANDOM WALK, Version 1.0 (2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343>.

APA Format

Onken, D. (2011). Solar Photon Random Walk (Version 1.0) [Computer software]. Retrieved September 8, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343

Chicago Format

Onken, Drew. "Solar Photon Random Walk." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343 (accessed 8 September 2024).

MLA Format

Onken, Drew. Solar Photon Random Walk. Vers. 1.0. Computer software. 2011. Java (JRE) 1.5. 8 Sep. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343>.

BibTeX Export Format

@misc{ Author = "Drew Onken", Title = {Solar Photon Random Walk}, Month = {July}, Year = {2011} }

Refer Export Format

%A Drew Onken %T Solar Photon Random Walk %D July 26, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343 %O 1.0 %O application/java

EndNote Export Format

%0 Computer Program %A Onken, Drew %D July 26, 2011 %T Solar Photon Random Walk %7 1.0 %8 July 26, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11349&DocID=2343

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The AIP Style presented is based on information from the AIP Style Manual.

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The MLA Style presented is based on information from the MLA FAQ.

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