光电效应,光电效应,guangdian xiaoying,光电效应,guangdian,xiaoying,[拼音]:guangdian xiaoying[外文]:photoelectric effect金属及其化合物在辐照下发射出电子的现象。早在1888年,G.L.赫兹观察到紫外线照射在金属上时,能使金属发射带电粒子。在j.j.汤姆孙发现...
光电倍增管,光电倍增管,guangdian beizengguan,倍增,guangdian,beizengguan,[拼音]:guangdian beizengguan[外文]:photomultiplier tube依据光电子发射、二次电子发射和电子光学的原理制成的、透明真空壳体内装有特殊电极的器件。光阴极在光子作用下发射电子,这些电...
半导体雪崩光电二极管,半导体雪崩光电二极管,bandaoti xuebeng guangdian erjiguan,雪崩,半导体,bandaoti,erjiguan,guangdian,xuebeng,[拼音]:bandaoti xuebeng guangdian erjiguan[外文]:semiconductor avalanche...
光电成像器件,光电成像器件,guangdian chengxiang qijian,器件,成像,guangdian,chengxiang,qijian,[拼音]:guangdian chengxiang qijian[外文]:photo-electronic imaging device微光图像探测器系列的总称。它们的作用是光电转换,增强...
光电光度计,光电光度计,guangdian guangduji,guangdian,guangduji,[拼音]:guangdian guangduji[外文]:photoelectric photometer用光电倍增管作辐射探测器测量天体辐射流的仪器。它的用途是确定天体的视星等和色指数。如图所示光电头中,光阑转盘位于望远镜焦点处,被测...
光电管与光电倍增管,光电管与光电倍增管,guangdianguan yu guangdian beizengguan,光电管,倍增,guangdianguan,beizengguan,guangdian,yu,[拼音]:guangdianguan yu guangdian beizengguan[外文]:phototube and pho...
光电管与光电倍增管,光电管与光电倍增管,guangdianguan yu guangdian beizengguan,光电管,倍增,guangdianguan,beizengguan,guangdian,yu,[拼音]:guangdianguan yu guangdian beizengguan[外文]:phototube and pho...
光电管与光电倍增管,光电管与光电倍增管,guangdianguan yu guangdian beizengguan,光电管,倍增,guangdianguan,beizengguan,guangdian,yu,[拼音]:guangdianguan yu guangdian beizengguan[外文]:phototube and pho...
光电中星仪,光电中星仪,guangdian zhongxingyi,中星,guangdian,zhongxingyi,[拼音]:guangdian zhongxingyi[外文]:photoelectric transit instrument在中星仪上加一套记录恒星通过子午圈时刻的光电装置和一个导星镜,就成为光电中星仪。它是苏联H.H....
光电等高仪,光电等高仪,guangdian denggaoyi,等高,guangdian,denggaoyi,[拼音]:guangdian denggaoyi[外文]:photoelectric astrolabe用光电方法自动记录恒星经过60°等高圈的时刻,从而归算出经度(世界时)和纬度的一种新型仪器。它与棱镜等高仪的主要区别是用光电自...