“densitometer”的概念、定义、习题解题方法及翻译-物理辞典

单词	densitometer
释义	densitometer An instrument used to measure the photographic density of an image on a film or photographic print. Densitometers work by letting the specimen transmit or reflect a beam of light and monitoring the transmitted or reflected intensity. They originally consisted of visual photometers but most instruments are now photoelectric. The simplest transmission densitometer consists of a light source, a photosensitive cell, and a microammeter: the density is measured in terms of the meter readings with and without the sample in place. They have a variety of uses, including detecting the sound track on a cinematic film, measuring intensities in spectrographic records, and checking photographic prints
随便看	phase phase angle phase diagram phase modulation phase rule phase space phase speed phase transition phase-contrast microscope phases of the moon phasor phlogiston theory phon phonon phosphor bronze phosphorescence phot photino photocathode photocell photochemical reaction photochemistry photochromism photoconductive effect photodiode

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。