Is AC or BC a straight line?

[Fu-Kwun Hwang]

Is AC or BC a straight line?

Move mouse inside box and find out the answer?

You can drag the two sliders and study effect due to width/distance!

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.illusion_switchposition_pkg.illusion_switchpositionApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_illusion_switchposition.jar' name='illusion_switchposition7716' id='illusion_switchposition7716' width='501' height='426' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=7716' target='smfejs'>Run simulation</a>

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!

[lookang]

very interesting!

what is a good source of information regarding this kinds of illusion? is it http://en.wikipedia.org/wiki/Illusion ?

i need to understand why the human brains works that way?
as in why did i find the AC a straight line i mean

it is because of my prior knowledge in life (looking at physics phenomena of refractive index of glass)?

by the way, there is an optical illusion that i could not believe.
very interesting too
http://en.wikipedia.org/wiki/Same_color_illusion

Areas of the image A and B are the same color.


A rectangle of the same color has been drawn connecting the two areas of the image

[Fu-Kwun Hwang]

I just created another applet : illusion: Two identical color dots? or illusion: The same color illusion
for the effect you are interested in.

[Fu-Kwun Hwang]

Drag line at left until you think it is align with blue line at right side.
Then, click show check box to find out how good your guest is.

Click show2, then drag index n to see at what value it will meet with your prediction.
(the second line was calculated with snell's law

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.illusion_straightlinen_pkg.illusion_straightlinenApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_illusion_straightlinen.jar' name='illusion_straightlinen8253' id='illusion_straightlinen8253' width='543' height='476' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=8253' target='smfejs'>Run simulation</a>

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!