var fDesc=new Array(); fDesc[0] = "Color Vision allows you to make a whole rainbow by mixing red, green, and blue lights. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.

Features:

- Photons
- Rainbows
- Monochromatic Light
- White Light"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }