THE MAKING OF SIMPLE PHOTOELECTRIC APPARATUS AND THE TRIAL FOR PHOTOELECTRIC EXPERIMENT

• Main Author: DIAZ (NIM : 90213002), RIMELLA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23997
• Institution: Institut Teknologi Bandung

Hertz had found a phenomenon of electron leap from metal surface when it was irradiated by light, but he could not explain how that phenomenon happened. The phenomenon of electron release from metal surface when it irradiated by certain light, called photoelectric effect. The explanation of photoelectric effect is given in XII grade, but it is usually only explained theoretically. It caused by the limited of experiment equipment at school. Therefore, this study intended to make a simple photoelectric effect apparatus with LASER pointer as the light source to measure the value Planck constanta, value of Caesium work function and long wave of LASER pointer that has been used. The study used IP39 photo cell made from caesium that had 2,1 eV of work function value, where as the light that been used were red, green and violet. The result from experiment shows that the value of Planck constanta was 7,03x10-34 Js, value of caesium work function was 1,86 eV, and the value of long wave from green light and violet light was 501,26 nm and 447,17 nm. The conclusion from the study was the simple apparatus for photoelectric effect can be used at school.