Index of /images/thumb/a/ae/Photoelectric_workfunct.jpg

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[IMG]450px-Photoelectric_..>2016-10-22 20:16 32K 
[IMG]240px-Photoelectric_..>2016-10-26 13:50 13K 
[IMG]300px-Photoelectric_..>2016-10-18 09:42 10K 
[IMG]180px-Photoelectric_..>2016-10-26 13:50 9.3K 
[IMG]120px-Photoelectric_..>2016-10-18 09:42 2.7K