NTNUJAVA Virtual Physics Laboratory
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JDK1.0.2 simulations (1996-2001) => Optics => Topic started by: John M. Clement on March 21, 2005, 01:20:54 pm



Title: Enhancement to Reflection/refraction
Post by: John M. Clement on March 21, 2005, 01:20:54 pm
It would be very useful if the "flashlight/laser pointer" could be relocated above the water.  In addition the ability to select several different media would be useful such as water/air, glas/air,  diamond/air, glass/water ...


Title: I hope you like this applets
Post by: Fu-Kwun Hwang on March 23, 2005, 07:37:58 am
-*-
[ejsapplet]
You can change the index of refraction for upper or lower media.
Click Intensity checkbox will show information about light intensity.
Select either pwave or  swave for  different polarization incident light.
Is and Ip are ratio of light being reflected.

If you want to download this applet (for registered user)
Please check out Intensity of reflected s-wave/p-wave (http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=527) and click "GET APPLET FILE" button.


Title: Note. This enhancement needs download button
Post by: mcaryota on March 16, 2006, 10:30:36 pm
I'm glad this applet is here, but I can't download it.


Title: topic131
Post by: Fu-Kwun Hwang on March 17, 2006, 09:24:15 am
You will be able to downliad it from Intensity of reflected s-wave/p-wave
 (http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=527)


Title: wavefronts moving at the wrong speed?
Post by: PhysMoe on April 01, 2006, 02:28:11 am
This is a nice applet, but it appears that the wavefronts (I'm assuming that's what the thin red lines that move are when I push "Play") are moving at the wrong speed. The wavefront moves further (therefore faster) in the slow medium than it does in the fast medium. Perhaps I'm misinterpreting something?


Title: topic131
Post by: Fu-Kwun Hwang on April 03, 2006, 02:34:17 pm
I am soory. I did not consider the wave speed in the previous version. (So the speed did not change). The code has been modified in this new version. Thank you! :-)


Title: refraction-reflection at an interface: getting the applet
Post by: meadwc on June 18, 2006, 12:56:15 am
Hi, very nice demonstration.  I'm new to this site, and don't see how to get an offline version of the applet.  Please advise.  Thanks.


Title: topic131
Post by: Fu-Kwun Hwang on June 19, 2006, 11:57:15 am
If you want to download this applet (for registered user)
Please check out Intensity of reflected s-wave/p-wave (http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=527) and click "GET APPLET FILE" button.


Title: Re: Enhancement to Reflection/refraction
Post by: Bennigno on February 05, 2010, 11:22:18 am
Very nice demo! If the index n2 can be both negative and positive, it would be great to show the student for the negative refraction.


Title: Re: Enhancement to Reflection/refraction
Post by: Fu-Kwun Hwang on February 05, 2010, 05:10:32 pm
Here is the version with extral options: negative n2 (if you click the "negative n2" check box, n2 will become negative.

Please ckick the following image to view the applet.
[eye][ejsapplet][/eye]
(to prevent loading to jar files at the same time when viewing this topic)