“collimator”的概念、定义、习题解题方法及翻译-物理辞典

单词	collimator
释义	collimator 1 Any device for producing a parallel beam of radiation. A common arrangement used for light consists of a convex achromatic lens fitted to one end of a tube with an adjustable slit at the other end, the slit being at the principal focus of the lens. Light rays entering the slit leave the lens as a parallel beam. Collimators for particle beams and other types of electromagnetic radiation utilize a system of slits or apertures. 2 A small fixed telescope attached to a large astronomical telescope to assist in lining up the large one onto the desired celestial body.
随便看	plutonium Poincaré group Poincaré sphere Poincaré stresses point defect point discharge point-contact transistor poise Poiseuille's equation poison Poisson's ratio polar coordinates polar molecule polar vector polarimeter polarizability polarization polarization of light polarizer polarizing angle Polaroid polaron pole pollution polonium

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。