BIOL 1000 Chapter Notes - Chapter 1: Circadian Clock, Circadian Rhythm, Electromagnetic Spectrum
Document Summary
Light is one of the most fundamental phenomenon in nature. It serves as: source of energy (direct or indirect, as a source of direct energy for plants and other photosynthetic organisms, as well as an indirect source of energy for organisms that consume them. In biology light is commonly defined as the visible portion of the em spectrum. Light is energy in the form of em radiation that travels as packets of energy called photons in a wave motion. Light and energy are inversely related; the shorter the wavelength, the higher the energy: the visual spectrum for humans is approx. Spectrum: transmitted when a photon of energy is not the wavelength and thus energy level, reflected the electrons of the pigment can absorb, it is transmitted or reflected. Dangers of light: although light is very useful, it has it"s dangers. Light/em radiation of short wavelengths and high energy (called ionizing radiation) such as uv rays,
