UltaViolet Light:Ultraviolet light is a part of the electromagnetic spectrum. Ultraviolet rays have frequencies greater than the frequency of visible light but lower than the frequency of X-rays. The wavelength of ultraviolet light is shorter than visible light and longer than that of X-rays. O...
百度试题 结果1 题目 Ultraviolet light of wavelength 350 nm and intensity 1.00 W/m2 is directed at a potassium surface. The maximum kinetic energy of the photoelectrons is ( ) 相关知识点: 试题来源: 解析 3.5 eV 反馈 收藏
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Ultraviolet (UV) light, as a specific type of photon with its wavelength in the range of 10–400 nm, has a far-reaching impact on the development of human society and the quality of life[1,2]. Ultraviolet is a double-edged sword. In particular, appropriate utilization of ultraviolet radia...
PURPOSE:The titled absorber absorbing effectively long-wavelength ultraviolet rays, protecting the skin from their bad influence, stable in a cosmetic, showing improved solubility in solvents for cosmetic, containing a dibenzoylmethane derivative containing a specific substituent group. CONSTITUTION:A ...
LISUN LPCE-2(LMS-9000BUV) integrating sphere UV VIS is used to test the UV lamp (light source) Spectrum, Radiant, Efficiency, CRI, CCT, UVA, UVB, UVC radiant and electric parameters.Spectral Range Wavelength: 200-400nm(UV). The whole system includes the LMS-9000BUV ...
of wavelengths is known as theelectromagnetic (EM) spectrum. The spectrum is generally divided into seven regions in order of decreasing wavelength and increasing energy and frequency. The common designations are radio waves,microwaves,infrared(IR), visible light, ultraviolet (UV),X-raysandgamma-...
1)Ultraviolet light with a wavelength of 253.7nm灭菌紫外线 2)Ultraviolet Cermicidal Irradiation紫外线照射灭菌 3)ultraviolet sterilamp紫外线灭菌灯 4)ultraviolet sterilization紫外线灭菌法 5)ultraviolet sterilization lamp紫外灭菌灯 1.This paper analyses the ineffective sterilization space of straight-tubeultravi...
Ultraviolet light of wavelength 350 nm and intensity 1.00 W/m2 is directed at a potassium surface.The maximum kinetic energy of the photoelectrons is() A.17.6 eVB.4.42×10-19 JC.3.5 eVD.6.9 eV正确答案:3.5 eV 点击查看答案进入小程序搜题...
0.75 m spectrometer and detected with a photomultiplier tube (PMT). The light output power and external quantum efficiency (EQE) were measured by using a calibrated integrating sphere. The reflectance spectrum was measured using an UV/vis spectrophotometer in a wavelength range of 300–900 ...