μmol photons m-2s-1与勒克斯（lux）的换算关系

maou_beryl2022-10-04 11:39:541条回答

μmol photons m-2s-1与勒克斯（lux）的换算关系
-2 -1 皆为上标给出正确答案的追到100分粘贴党止步

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英语翻译The energy of a mole of photons of red light from a lase 英语翻译 The energy of a mole of photons of red light from a laser is 175 kJ/mol.Calculate the energy of one photon of red light.What is the wavelength of red light in meters?In nm?Compare the energy of photons of violet light with those of red light.Which is more energetic and by what factor? 一只喝露水的虫子1年前1: 258258 共回答了25个问题 | 采纳率84%

一摩尔来自红色激光束的光子能量为175千焦每摩尔.
第一小题：计算红色光的一个光子的能量.这个就是用175kJ除以阿伏伽德罗常数,也就是除以6.02*10^23
第二小题：红光的波长以米为单位是多少?纳米呢?这个先用光的能量E=hf,算出来光频率f.h是普朗克常数,你应该知道的哈.然后用单个光子的能量除以h就是光的频率.然后再用光速c=λf,把λ波长算出来,单位自己换算.
第三小题：比较紫色光和红色光的光子能量.哪个能量更大?是由什么因素决定的?
答案是紫色光能量大,因为频率高,根据E=hf的公式,能量是直接和频率成正比的.

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一道光子数的题目（英文）Find the number of photons incident on a detecto 一道光子数的题目（英文） Find the number of photons incident on a detector in one second if the optic power is 1uw and the wavelength is 0.8 um.Compute and plot the photon energy in eV for a wavelength between 1260 and 1675 nm. gi9b1年前1: 凭水照花共回答了15个问题 | 采纳率93.3%

1μW = 10⁻⁶W = 10⁻⁶ J/s
The energy of each photon is E = hν = hc/λ = 6.6*10⁻³⁴*3*10⁸/(0.8*10⁻⁶) = 2.5*10⁻¹⁹ J
number of photons incident on a detector per second:
10⁻⁶/(2.5*10⁻¹⁹) = 4*10¹²
1 eV = 1.6×10⁻¹⁹
E = hc/λ = 2*10⁻²⁵/λ Joule = (2*10⁻²⁵/1.6×10⁻¹⁹)/λ eV = 1.25*10⁻⁶/λ eV (λ in meters)
1260 nm = 1.26*10⁻⁶m
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1675 nm = 1.675*10⁻⁶m
Please draw the graph yourself.

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