【摘要】 根据硅光电池的光电特性,设计了测量钢丝杨氏模量实验中的光电测量装置,钢丝在外力作用下被拉长时,硅光电池的受光面积会发生变化,并引起光电流大小的改变.通过测定光电流的显著改变量即可测算出金属丝的微小伸长量,最终获得更准确的钢丝杨氏模量数值.更多还原

【Abstract】 A photoelectric device was designed to measure the Young modulus of steel wire.When the wire was stretched,the illuminated area on the silicon photocell would change,causing a change of the photocurrent.By measuring the change of the photocurrent,the slight elongation of the steel wire could be calculated,and the Young modulus could be obtained accurately.更多还原