When changing weather “takes away” the green from autumn leaves, they turn red and yellow. When bare wood is finished, deeper colors appear. With color, what you see isn’t always what you get. Discover the reasons in “Hidden Colors Revealed” when UWM chemist Alan Schwabacher shows various ways that color can be present, but not visible – or uncovered. He’ll make a white cloth made of fiberglass invisible before your very eyes by submerging the cloth in a liquid of the same index of refraction. He’ll demonstrate how substances can change from one color to another by removal of “obscuring” colors. On the flip side, Schwabacher will show some ways that colors caused by chemical reactions can form, and how other colors can hide by being mixed with still other colors. Finally, although colors like ultraviolet and infrared are invisible, we’ll learn how they impact the visible world: ultraviolet and sunburn; infrared and the effectiveness of insulation.