The
World Through a Hole
This java applet let you play with a virtual pinhole viewer.
How could the light from the source get through the tiny pinhole
to create a complete image of the source?
Why is the image upside down on the screen?
Think about the path of light.
What do you think would happen if you enlarge the pinhole size?
Does the image become more or less clear?
How to play:
Click LEFT mouse button
-
at blue dots at character F
to
show the light path emitted.
-
at bottom near character F
,and
drag left/right to move F
along
the z-axis.
-
at pinehole and drag the mouse to change the location of the pinehole box.
Your suggestions are highly appreciated! Please click
hwang@phy03.phy.ntnu.edu.tw
Author：Fu-Kwun
Hwang, Dept. of physics,
National
Taiwan Normal University
Last modified：