ahmedelshfie
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on: April 06, 2010, 10:14:42 am » posted from:Uberaba,Minas Gerais,Brazil |
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 Written by Fu-Kwun Hwang Edited by Loo Kang WEE and Wolfgang Christian Modified by myself
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ahmedelshfie
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Reply #1 on: April 06, 2010, 10:24:57 am » posted from:Uberaba,Minas Gerais,Brazil |
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 Blackbody Radiation
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ahmedelshfie
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Reply #2 on: April 06, 2010, 10:25:37 am » posted from:Uberaba,Minas Gerais,Brazil |
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 No work too prof 
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ahmedelshfie
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Reply #3 on: April 06, 2010, 10:35:29 am » posted from:Uberaba,Minas Gerais,Brazil |
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 Blackbody Radiation
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Fu-Kwun Hwang
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Reply #4 on: April 06, 2010, 11:14:23 am » posted from:Taipei,T\'ai-pei,Taiwan |
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 There is another problem I found: You did not save the xml file at the standard place. Normally, you will select a workspace For example: d:\EJS_4.2.7\workspace or any place like d:\ejsworkspace There are four subdirectory under the above workspace config/export/output/source We should put our xml source under source. There is a sub-directory under source called users. That is the place for users to save his/her own xml files. To avoid conflict between users (e.g. two users both create pendulum.xml ), so sub-directory are suggested. For example: I save all my xml files under workspace\users\ntnu\fkh where ntnu is the university where I did my work. fkh is for myself. If there is other user at my university, then he/she is suggested to put file under workspace\users\ntnu\xxx where xxx is his/her own identity. I would suggest you save your xml file under workspace\users\br\ahmed or something else However, it has to be at least under workspace\users to work. I believe you save your files at workspace\ahmed , that is the reason why the uploaded jar file did not work. Because it might conflict with others. Please move you directory ahmed under users (becomes users/ahmed or users/br/ahmed or ...) and it should work.
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ahmedelshfie
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Reply #5 on: April 06, 2010, 06:37:52 pm » posted from:,,Brazil |
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 Hi prof  I delete ejs and download again and change path From ejs consol to this D:/EJS_4.2.7/workspace/source/users/br/ahmed\ So after i copy XML file of project and paste in user/br/ahmed But when i run to open XML file in ejs said "the file selected must be under the source directory" I don't know what mean it so I'm still now try understand what the problem in path
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ahmedelshfie
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Reply #6 on: April 06, 2010, 07:04:01 pm » posted from:,,Brazil |
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 is not working again
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« Last Edit: April 26, 2010, 07:51:33 pm by ahmedelshfie »
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ahmedelshfie
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Reply #7 on: April 06, 2010, 07:35:28 pm » posted from:,,Brazil |
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 I post again now i hope get succeed
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ahmedelshfie
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Reply #8 on: April 06, 2010, 07:39:56 pm » posted from:,,Brazil |
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 This is just test
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ahmedelshfie
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Reply #9 on: April 06, 2010, 07:47:02 pm » posted from:,,Brazil |
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 This patm prof after i change i Will send picture attach i renam user/br/ahmed
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ahmedelshfie
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Reply #10 on: April 06, 2010, 08:06:22 pm » posted from:,,Brazil |
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 This is test too 
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lookang
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Reply #11 on: April 06, 2010, 08:39:01 pm » posted from:Singapore,,Singapore |
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 for me C:\EasyJavaSimulation\EJS_4.2_091119\EJS_4.2\workspace\source\users\ sgeducation\lookang\
you need br\ahmed\ it will work
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Fu-Kwun Hwang
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Reply #12 on: April 06, 2010, 08:47:04 pm » posted from:Taipei,T\'ai-pei,Taiwan |
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 Hi prof  I delete ejs and download again and change path From ejs consol to this D:/EJS_4.2.7/workspace/source/users/br/ahmed\ So after i copy XML file of project and paste in user/br/ahmed But when i run to open XML file in ejs said "the file selected must be under the source directory" I don't know what mean it so I'm still now try understand what the problem in path You should not change the setting in the ejs console. Set the workspace in ejs console back to D:/EJS_4.2.7/workspace/And move D:\EJS_4.2.7\workspace\source\ahmed\ to D:\EJS_4.2.7\workspace\source\users\br\ahmed\If you do not have D:\EJS_4.2.7\workspace\source\users\br\ , you need to create it then move D:\EJS_4.2.7\workspace\source\ahmed\ to D:\EJS_4.2.7\workspace\source\users\br\ahmed\ If you change the workspace from D:/EJS_4.2.7/workspace/ to D:/EJS_4.2.7/workspace/source/users/br/ahmed/ Then EJS will try to find source from D:/EJS_4.2.7/workspace/ to D:/EJS_4.2.7/workspace/source/users/br/ahmed/sources/ You can change the directory of workspace to anywhere in your computer. However, you need to have source/users/br/ahmed/ under the directory of your workspace. I hope you can understand what I mean. 
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ahmedelshfie
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Reply #13 on: April 06, 2010, 09:04:22 pm » posted from:,,Brazil |
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 OK prof i do the same i change work speac and back workspace to what you say and workspace in consol now is "D:/EJS_4.2.7/workspace/" Workspace in source is"D:\EJS_4.2.7\workspace\source\users\br\ahmed" So now i will test post simulation again
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ahmedelshfie
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Reply #14 on: April 06, 2010, 09:13:41 pm » posted from:,,Brazil |
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 Is the same prof I do every thing i will send 2 pictures one or path in ejs consul and another For path of users When i do it and after convert to jar file he put jar file automatic in export And when i come to upload simulation Blackbody Radiation say this message"file ejs_Blackbody_Radiation_Spectrum.jar exists, file will be replaced!" What mean it prof  Respect
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Fu-Kwun Hwang
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Reply #15 on: April 06, 2010, 10:46:25 pm » posted from:Taipei,T\'ai-pei,Taiwan |
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 Make sure you use EJS to open the xml source and re-compile to generate new jar file again. The message is just let you know that you have upload the same jar filename before. It is a warning message: It is fine if you really want to replace the previous file. It is a reminder such that you would not over-write something you have created before (old jar file with the same filename will be replaced with new uploaded jar file) I check out the jar file you have uploaded last time. It was ejs_Blackbody_Radiation_Spectrum.jar However, the xml file in the jar file is BlackbodyRadiationSpectrum.xml So the output of the jar file should be ejs_BlackbodyRadiationSpectrum.jar Why you change it to ejs_Blackbody_Radiation_Spectrum.jar  If the xml source is Blackbody_Radiation_Spectrum.xml than the ejs generated jar file will be ejs_Blackbody_Radiation_Spectrum.jar However, your ejs source is BlackbodyRadiationSpectrum.xml, the generated jar file by ejs should be ejs_BlackbodyRadiationSpectrum.jar And please do not use space " " as part of EJS source.
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« Last Edit: April 24, 2010, 02:48:57 am by ahmedelshfie »
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ahmedelshfie
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Reply #16 on: April 06, 2010, 11:30:02 pm » posted from:,,Brazil |
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 BlackbodyRadiation Embed a running copy of this simulation Embed a running copy link(show simulation in a popuped window) Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site listPress the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
- Please feel free to post your ideas about how to use the simulation for better teaching and learning.
- Post questions to be asked to help students to think, to explore.
- Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!
 
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ahmedelshfie
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Reply #17 on: April 06, 2010, 11:32:15 pm » posted from:,,Brazil |
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 Is work Prof  Thank you so much
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Fu-Kwun Hwang
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Reply #18 on: April 06, 2010, 11:40:48 pm » posted from:Taipei,T\'ai-pei,Taiwan |
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 So you know the rule now. You can upload and create new topic when you make a new simulation. Keep up the good job! 
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ahmedelshfie
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Reply #19 on: April 06, 2010, 11:46:12 pm » posted from:,,Brazil |
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 Thank you Prof be sure about it Respect Ahmed
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ahmedelshfie
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Reply #20 on: April 19, 2010, 07:03:26 pm » posted from:,,Brazil |
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 In physics, a black body is an idealized object that absorbs all electromagnetic radiation that falls on it. No electromagnetic radiation passes through it and none is reflected. Because no light (visible electromagnetic radiation) is reflected or transmitted, the object appears black when it is cold. However, a black body emits a temperature-dependent spectrum of light. This thermal radiation from a black body is termed black-body radiation.[nb 1] At room temperature, black bodies emit mostly infrared wavelengths, but as the temperature increases past a few hundred degrees Celsius, black bodies start to emit visible wavelengths, appearing red, orange, yellow, white, and blue with increasing temperature. By the time an object is white, it is emitting substantial ultraviolet radiation. The term "black body" was introduced by Gustav Kirchhoff in 1860. Black-body emission gives insight into the thermal equilibrium state of a continuous field. In classical physics, each different Fourier mode in thermal equilibrium should have the same energy. This approach led to the paradox known as the ultraviolet catastrophe, that there would be an infinite amount of energy in any continuous field. Black bodies could test the properties of thermal equilibrium because they emit radiation which is distributed thermally. Studying the laws of the black body historically led to quantum mechanics.
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ahmedelshfie
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Reply #21 on: April 19, 2010, 07:06:26 pm » posted from:,,Brazil |
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ahmedelshfie
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Reply #22 on: April 26, 2010, 07:50:27 pm » posted from:,,Brazil |
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 The Blackbody Radiation Spectrum model shows six fixed-temperature curves between Tmin and Tmax and a red variable-temperature curve that can be adjusted using a slider. The wavelength is measured in nm (nanometer) and the intensity is measured in W.e-5 / (m2.nm). Users can adjust Tmin and Tmax to change the temperature range that is displayed.
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