NTNUJAVA Virtual Physics Laboratory (Java Simulations in Physics)
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NTNUJAVA Virtual Physics Laboratory (Java Simulations in Physics) > JDK1.0.2 simulations (1996-2001) > Wave > Double slit interference
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Author Topic: Double slit interference  (Read 100158 times)
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Fu-Kwun Hwang
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« on: January 29, 2004, 08:06:23 PM »
Registed user can get files related to this applet for offline access.
If java program did not show up, please download and install latest Java RUN TIME
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  • Each click to thebutton will open a new window. Try it!

  • You can change:

    1. You can change size of the popup window.

    2. distance between slits, initial value = 150


    3. wavelength of plane wave, initial value=15

    4. Hit the "Start" button inside the window will start the animation

    5. You can also drag one of the slit to change distance between slits

    6. If you click or drag the LEFT mouse , the animation suspend. animation resume when it is released.

      7. distances from both slits to the mouse (d1,d2) are shown in the "texField"

      with format "d1 - d2 = path difference" , numbers are divided by wave length

      If you click or drag the LEFT mouse , the animation suspend. Click right mouse button again to resume.

    7. Close the created window to Quit.


    Registed user can get files related to this applet for offline access.
    If java program did not show up, please download and install latest Java RUN TIME
    There are 6 translations,
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    « Reply #1 on: January 30, 2004, 11:12:43 AM »
    Subject: double-slit applet
    Date: Tue, 25 Aug 1998 14:45:37 -0400 (EDT)
    From: "James Bo Begole" <begolej@simon.cs.vt.edu>
    Reply-To: "James `Bo' Begole" <begolej@vt.edu>
    To: hwang@phy03.phy.ntnu.edu.tw
    I liked to older version of the double slit applet better. The interface
    on the old one was much easier to use, although it was slower to run. I
    can't map the frequency to a color in my head. Can you put up a link to
    your old version?

    Why am I interested in your applet? My interest stems from our work on
    collaborative learning systems. I have a system called Flexible JAMM (Java
    Applets Made Multiuser) that allows the shared use of single-user applets,
    such as yours. Do you mind if we use the old version to test how
    difficult it will be for a developer to make an applet that can be used in
    this system?

     Flexible JAMM: http://simon.cs.vt.edu/jamm

      -Bo
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    Calistes
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    « Reply #2 on: November 17, 2004, 01:23:14 PM »
    Dear sir
    This is a nice and suitable applet for the demo. Again in this applet if there is a vertical line like a screen and the indications of the points where the anti nodal and nodal lines meet this line, like in the Young's expt. i think the applet would have been more informative
    javascript:emoticon(':roll:')
    Rolling Eyes
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    murray anderson
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    Posts: 1
    « Reply #3 on: July 26, 2005, 01:26:49 PM »
    Excellent applet - for use in physics classes on light and sound..............well done.
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    saurav verma
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    Posts: 1
    « Reply #4 on: August 11, 2007, 11:45:39 PM »
    can u pls tell me how is intensity(maximum & minimum) related to the fringe width???
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    Fu-Kwun Hwang
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    « Reply #5 on: August 12, 2007, 12:16:03 AM »
    Please check out the following simulation first : single/multiple slit diffraction/interference

    It will show how the intensity changed with several parameters (slit width, slit separations... etc).
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