Vol. 11 No. 2 (2026): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 11 Issue 2, August 2026

Articles

• Design and Development of an Internet of Things (IoT) Based Automatic Transfer Switch (ATS) Monitoring System Using an Expert System Approach For Electrical Energy Backup

  Rafiuddin Syam, Ara Akdzal Al Tariq, Efri Sandi, Keigo Watanabe

  97 - 106

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• The Effect of Adding Perlite to Unfired and Fired Geopolymer Concrete Made from Fly Ash on Pore Distribution and Compressive Strength

  Fransisca Maria Farida, Tri Bambang Adi Kuncoro, Via Tuhamah Fauziastuti, Mohamad Farizal Fikri

  107 - 118

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• Imaging Performance Analysis of Green Mussel Shell-Derived Hydroxyapatite as a Sustainable Material for Bone Phantom Fabrication

  Zhevanya Elisa Cleans Sihombing, Devina Rayzy Perwitasari Sutaji Putri, Erlinda Ratnasari Putri, Adrianus Inu Natalisanto, Sahara Hamas Intifadhah

  119 - 134

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• Edge Seismic Denoising: Benchmarking the Hailo-8L on Raspberry Pi 5

  Antonia Indriyani Juniar, Naura Anbiyya Faka Mursaid, Ahmad Kadarisman, Martarizal

  135 - 150

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• Magnitude Transformation from RGB Bayer Filter to the Johnson-Cousins BVR Filter Based on CAT-ITB Telescope Photometric Observations of Selected Open Clusters

  Raihan Amirul Husana, Mahasena Putra, Anton Timur Jaelani, Chatief Kunjaya, Aliyya Nur Rahma, Firdaus Orvin Dwifauja Manalu

  151 - 162

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• Fire Characteristics of Motorcycles in Open Areas at UNJ Campus Using PyroSim

  Pratomo Setyadi, Dicky Chandra, Imam Asyrafi Alfarizi, Mayzar Maulana

  163 - 176

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