AS101 Lecture Notes - Lecture 6: Adaptive Optics, Diffraction, Photometer
Document Summary
Electromagneic radiaion changing electric and magneic ields that travel through space and transfer energy from one place to another; ex. Wavelength ( ) the distance between successive peaks or troughs of a wave, usually represented by a lowercase greek lambda. Nanometre (nm) a unit of distance equalling one-billionth of a metre, commonly used to measure the wavelength of light. Angstrom ( ) a unit of distance commonly used to measure the wavelength of light. Infrared (ir) the porion of the electromagneic spectrum with wavelengths longer than red light, ranging from 700nm to about 1mm, between visible light and radio waves. Ultraviolet (uv) the porion of the electromagneic spectrum with wavelengths shorter than violet light, between visible light and x-rays. X-rays electromagneic waves with wavelengths shorter than ultraviolet light. Photon a quantum of electromagneic energy that carries an amount of energy that increases proporionally with its frequency but decreases proporionally with its wavelength.
