Color The science of color is sometimes called chromatics, colorimetry, or simply color science. It includes the study of the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what is commonly referred to simply as "light"). Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity. When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light". Most light
What Color is Your Parachute? books in print. In the latest edition of the book, the author writes about how to adapt one's job search to the Web 2.0 age. The book recommends networking to find "the person with the authority to hire you", rather than sending out resumes in bulk, shotgun fashion. It also recommends carefully figuring out what one is best at and what one enjoys most, which (the author says) tend to coincide. Richard Nelson Bolles wrote numerous spinoffs of "What Color is Your Parachute", targeted at specific audiences and career issues; he also collaborated with Mark Emery Bolles to write versions