【摘要】 利用红/绿激光笔、手机、水槽等简单器材，搭建了光度计模拟实验装置.基于Phyphox软件，利用手机的光敏传感器测量透射光的光强，获得溶液层的吸光度随溶液浓度和厚度的变化关系.结果表明：溶液层的吸光度与溶液浓度及厚度成正比，验证了朗伯-比尔定律.以Fe₂（SO₄）₃溶液和KCr（SO₄）₂溶液为例，测量了含有2种溶质的混合溶液各溶质的浓度.更多还原

【Abstract】 A self-designed experimental instrument was set up using some simple devices, such as red and green laser pointers, mobile phone, sink, and so on. Based on the Phyphox software of mobile phone, the light intensity sensor of mobile phone was used to measure the light intensity of transmitted light. It was shown that the absorbance of the solution layer varied with the concentration and thickness of the solution. The results showed that the absorbance of the solution was proportional to the concentration and thickness of the solution, which verified Lambert-Beer law. Taking Fe₂（SO₄）₃ and KCr（SO₄）₂ solutions as the examples, the concentration of each solute in the mixed solution containing two solutes was measured.更多还原