To understand the science of colors, we must first know something about the nature of light. Light is an energy source that behaves like a wave. The distance between the each wave is called the wavelength. Light of different wavelengths …[Continue]

Despite the common misconception that “chemical” means toxic and is the opposite of natural, chemistry is the study of all substances (natural and man-made, toxic and nontoxic). Here’s a sampling of what the Net has to offer those interested in …[Continue]