Visible light is a type ofelectromagnetic radiation, which is transmitted in waves or particles at different wavelengths and frequencies. This broad range of wavelengths is known as the electromagnetic spectrum. That spectrum is typically divided into seven regions in order of decreasing wavelength and ...
百度试题 结果1 题目1. Visible light is just one form of r adiation. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
反义词 adj.+n. visible effect,visible change,visible mark,visible sign,visible form 权威英汉双解 英汉 英英 网络释义 visible 显示所有例句 adj. 1. 看得见的;可见的that can be seen 2. 明显的;能注意到的that is obvious enough to be noticed...
A. Violet B. Red C. Green D. Yellow 相关知识点: 试题来源: 解析 A。解析:根据光子能量公式E = hf(E是能量,h是普朗克常量,f是频率),在可见光中,频率越高能量越高。紫光的频率最高,所以紫光的能量最高。红光频率最低,能量也低。绿和黄的频率和能量都低于紫光,所以答案为A。反馈...
___all visible lights,red light has the longest and violet the shortest wacelength.A.anmong B.of C.for D.toAnswer:(B)为什么不能用A呢---I’d like a pen which ___well.---Will this one___?A.writes;do B.writes,work C.is written;do D.is weritten;work为什么不选C呢---shall...
DIAPHANOUS: LIGHT :: A.(A) visible: sightB.(B) unbreakable: glassC.(C) porous: liquidD.(D) slippery: glueE.(E) reflective: hamper热门考试 高考 一级建造师 二级建造师 初级经济师 中级经济师 教师资格证 企业法律顾问 注册会计师CPA 中级会计师 考研 ...
Like visible light,UV rays are energy waves released by the sun,only they cannot been seen. Some exposure (暴露) to those waves can do a body good. For example, ultraviolet B(UV-B)rays tell human skin to make vitamin D. Too much exposure can be harmful, though. Overexposure to UV ra...
A Visible-Light-Promoted C-H/C-N Cleavage Cascade The bicyclic isoxazolidine skeletons are not only the important building blocks for synthesis of 1,3-difunctional amino alcohols,but also the ubiquitously ... 谢劲,阿布力米提·阿布都卡德尔,潘长多,... - 中国化学会第八届有机化学学术会议暨首届...
, "light" means ___. A. the opposite of heavy B. a form of energy that makes things visible 相关知识点: 试题来源: 解析 A。在“The box is so light that I can carry it easily.”中,“light”表示“轻的”,与“heavy(重的)”相对。反馈 收藏 ...
2018 Elsevier Ltd Since the pollution of indoor air has significant effects on health, it is meaningful if decorative glass inside can purify indoor air. Types of glass were prepared by coating them with modified nano titanium dioxides (nano-TiO 2 ) and N, F and Fe ions were used as ...