The purpose of this applet is to demonstrate the impact of the size of zinc oxide nanoparticles on the efficiency and characteristics of sunscreen.
The size of the nanoparticles can be adjusted via checkboxes at the bottom of the window. Clicking on either "Nanoscopic View" or on the small magnifying glass will allow you to see how light is interacting with these nanoparticles.
In the options menu, the type of light can be changed, as well as the mass density of the zinc oxide.
The reset button will restore the applet to its default settings.
These instructions can be re-opened anytime through the "Help" menu.