摘要
衍射光栅实验是大学物理实验的重要内容,但常规教学中欠缺从元件(光栅)到仪器(光谱仪)的重要环节,不利于'中国制造'人才的培养。适当调整常规衍射光栅实验内容,增加光谱仪的内容,可实现学生获得感的增强和能力的提升。增加内容为:通过光栅光谱仪测量手机显示屏默认模式和护眼模式下的光谱,分析手机设置中护眼功能的效果,有些手机(如HuaWei Honor 9、iPhone X)只要开启护眼模式,即便调至最冷色调,蓝光占比也比未开启护眼时低,真正起到护眼的效果,而iPhone 7P护眼功能只在暖色调时有效。
The diffraction grating is an important experiment in the course of University Physics Experiment.Nevertheless,the link from components(grating)to instrument(spectrometer)is absent during normal teaching activities,which is not useful to cultivate manufacturing talents.Students’ability and sense of gain in the course can be strengthened via adjustment of experimental contents.The added content is to record the spectra of phone display at different tone of white by grating spectrometer.The effectiveness of eye protection function was discussed for mobile phones.Eye protection function is always effective for HuaWei Honor 9 and iPhone X.The intensity of blue light is weaker even if in the mode of the coldest-tone than that for the phones under non-eye-protection situation.whereas,eye protection is only effective in the mode of warm-tone for iPhone 7P.
作者
吕昭月
李明达
谢湘华
LüZhaoyue;LI Mingda;XIE Xianghua(Department of Physics,East China University of Science and Technology,Shanghai 200237)
出处
《物理与工程》
2019年第S1期97-100,共4页
Physics and Engineering
基金
华东理工大学2019年教学改革重点项目“互联网+过程考核的大学物理实验课程多元化评价体系研究”(80222301901001)
关键词
衍射光栅
手机显示屏
蓝光危害
护眼
diffraction grating
phone display
blue-light hazard
eye protection
