Instructions:
Click on the "Start Simulation" button to open the applet
window. This applet runs automatically. The circle represents a rain drop. You can
change the color of the incoming light by pressing on the corresponding color square on
the upper left of the applet. Right at the level of the center of the droplet, the radius
of the drop (R) and the vertical position (b) of the incoming light ray relative to the
center of the drop are provided. You can change b by clicking on the light ray with the
left mouse button and dragging up or down. When using one of the basic colors, clicking on
the light ray with the right mouse button and dragging changes the direction of the
incoming light beam. The index of refraction of water for each of the basic colors is
provided next to the color box. The incidence (i) and refraction (r) angles of the
incoming beam are given at the bottom left of the applet. The numbers provided next to all
beams refer to the polarization of the beam. '|' is used to refer to polarization in the
vertical direction parallel to the screen and '+' is used to refer to polarization
perpendicular to the screen. The graph shows the the electric field magnitude along both
polarization directions, yellow for '+' and a basic color for '|.'
When in rainbow mode (white light, with small drops) you can drag one of the drops around.Navigation: You can come back to this window by
pressing the "Close Simulation" button on the bottom frame of the
utility. |