Author Topic: Ray tracing of image forms with one or two combined convex/concave lens  (Read 21639 times)

Fu-Kwun Hwang

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The following applet shows light paths for converging lens.
Initially, there is only one convex lens.
The blue arrow represents object and green arrow is the image.
You can drag objec position and change it's height (drag arrow tip), too.
Two small cyan dots represent focus points (d 8)rag it to change focus length of the lens).
Drag the center of the lens to change it's location. Drag top of the lens to change the height of the lens.
For the first lens: $   frac{1}{P_1}+   frac{1}{q_1}=   frac{1}{f_1}$

Click 2nd Lens to add another convex lens. You can study how light paths were refracted to form the image.
If the separation between two lens is $d$, and assume second lens is at the right side of the first lens.
Then, $p_2=d-q_1$ , and the images form can be found at $   frac{1}{q_2}=   frac{1}{f_2}-   frac{1}{p_2}$.

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press 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.
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  • 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!

lookang

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Re: Ray tracing of image forms with one or two combined convex lens
« Reply #1 on: July 20, 2009, 08:51:10 am »
i like this simulation.
I was able to
1.study how the marginal lights rays are implemented.

next
i will try to implement many rays based on the marginal codes!

lookang

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Re: Ray tracing of image forms with one or two combined convex lens
« Reply #2 on: July 21, 2009, 10:55:22 am »
$   frac{1}{P_1}+   frac{1}{q_1}=   frac{1}{f_1}$

how to write equations in this forum? it is cool but i dont think it is default in SMF right?
$ frac{1}{P_1}+ frac{1}{q_1}= frac{1}{f_1}$



Fu-Kwun Hwang

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Re: Ray tracing of image forms with one or two combined convex lens
« Reply #3 on: July 22, 2009, 09:28:45 am »
Type the following syntax to show the above equation:
$frac{1}{p}+frac{1}{q}=frac{1}{f}$

Please check out http://en.wikipedia.org/wiki/Math_markup.
However, you need to add $ sign before and after the equation.

lookang

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Re: Ray tracing of image forms with one or two combined convex lens
« Reply #4 on: July 22, 2009, 12:54:28 pm »
$alpha$

ok i understand how to do that is this forum, but i can't do the same for my own forum http://66.7.205.91/~lookangc/index.php?topic=1005.msg2003#msg2003

can explain what mods needs to be done?

i actually use α
[html]α[/html]
« Last Edit: July 22, 2009, 12:57:35 pm by lookang »

Fu-Kwun Hwang

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Re: Ray tracing of image forms with one or two combined convex lens
« Reply #5 on: July 22, 2009, 11:38:57 pm »
I use the math equation code from MediaWiki and add my own code to make it work in this forum.

diinxcom

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Re: Ray tracing of image forms with one or two combined convex/concave lens
« Reply #6 on: December 14, 2014, 07:14:37 pm »
Just bookmarking first.
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