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Like what you dislike of those things are imortant. ...Wisdom

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 Author Topic: Ray tracing of image forms with one or two combined convex/concave lens  (Read 19780 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
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 « Embed this message on: July 19, 2009, 05:10:49 pm » posted from:Taipei,T\'ai-pei,Taiwan

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: $\tfrac{1}{P_1}+\tfrac{1}{q_1}=\tfrac{1}{f_1}$

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 $\tfrac{1}{q_2}=\tfrac{1}{f_2}-\tfrac{1}{p_2}$.

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 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.
• 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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lookang
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http://weelookang.blogspot.com

 « Embed this message Reply #1 on: July 20, 2009, 07:51:10 am » posted from:Singapore,,Singapore

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!
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lookang
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 « Embed this message Reply #2 on: July 21, 2009, 09:55:22 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE

$\tfrac{1}{P_1}+\tfrac{1}{q_1}=\tfrac{1}{f_1}$

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

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Fu-Kwun Hwang
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 « Embed this message Reply #3 on: July 22, 2009, 08:28:45 am » posted from:Taipei,T\'ai-pei,Taiwan

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.
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lookang
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 « Embed this message Reply #4 on: July 22, 2009, 11:54:28 am » posted from:Singapore,,Singapore

$alpha$

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
Code:
[html]α[/html]
 « Last Edit: July 22, 2009, 11:57:35 am by lookang » Logged
Fu-Kwun Hwang
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 « Embed this message Reply #5 on: July 22, 2009, 10:38:57 pm » posted from:Taipei,T\'ai-pei,Taiwan

I use the math equation code from MediaWiki and add my own code to make it work in this forum.
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diinxcom
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 « Embed this message Reply #6 on: December 14, 2014, 06:14:37 pm » posted from:,,Satellite Provider

Just bookmarking first.
-*-
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Like what you dislike of those things are imortant. ...Wisdom
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