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All Journal Jurnal Pendidikan Fisika Indonesia Golden Ratio of Law and Social Policy Review (GRLSPR)
Zainuddin, Z.
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Education Law, Crime, Criminology & Criminal Justice Physics

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Scientific Explanation of the Photoelectric Effect Using Common Objects Prayogi, S.; Silviana, F.; Zainuddin, Z.
Jurnal Pendidikan Fisika Indonesia Vol 19, No 2 (2023)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v19i2.40332

Abstract

In this study, a tool that can explain laboratory-scale photoelectric effect events was designed. So that having a tool that can explain the photoelectric effect will make it easier for users to study the nature of light as a particle. This tool is designed according to its function which will know that the photoelectric effect event is not affected by light intensity but is influenced by the frequency of a light source and the wavelength that shines on a metal so that electrons will move from a negative source towards a positive voltage source. A gadget for this experiment was built uses phototubes and cheap LEDs as light sources instead of traditional mercury lamps. Multiple LEDs operating in the wavelength range 470–631 nm can be used to measure the Planck constant to an accuracy better than 10%. By varying the intensity of the LEDs, it is possible to monitor the energy of the electrons and photocurrent with respect to the amount of light. The results show that the voltage applied to the photodiode leg (cathode) has a different value for each color spectrum and the output voltage obtained for each different wavelength, the less light intensity received by the photodiode, the smaller the output voltage value.
The Effectiveness of Civil Servant Profession Zakat Management in Ensuring Legal Certainty: A Case Study of Indonesia's National Zakat Agency Israyani, Triana Nur; Rahman, Sufirman; Zainuddin, Z.
Golden Ratio of Law and Social Policy Review Vol. 4 No. 2 (2025): January - June
Publisher : Manunggal Halim Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52970/grlspr.v4i2.1659

Abstract

The management of professional zakat in Indonesia, particularly by the National Zakat Agency (BAZNAS) in Pangkep Regency, faces significant challenges. Despite a national zakat potential of IDR 327 trillion in 2024, actual collection is only about IDR 41 trillion. In Pangkep, the policy of zakat profession deductions for Civil Servants (ASN) based on the Regent Circular No. 49/IV/KESRA/2021 has faced resistance due to weak legal foundations, insufficient socialization, and a lack of transparency, resulting in low ASN trust in zakat management institutions. This study aims to assess the effectiveness of ASN zakat management by BAZNAS in ensuring legal certainty and to identify factors contributing to resistance. Using a descriptive qualitative approach with a juridical-empirical methodology, data were gathered through interviews, non-participant observations, documentation, and questionnaires. The results show a 6.05% decrease in zakat revenue from 2023–2024, indicating poor ASN participation due to perceived coercion and lack of transparency. The study highlights weak regulations, minimal ASN involvement in decision-making, and insufficient transparency in zakat fund reporting as major barriers. The findings suggest that strengthening the legal framework, implementing participatory socialization, improving digital reporting systems, and institutional reforms focused on transparency and fairness are necessary to ensure the effectiveness and legal certainty of zakat management in Pangkep.
Co-Authors Israyani, Triana Nur Prayogi, S. Rahman, Sufirman Silviana, F.