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All Journal Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum International Journal of Science and Applied Science: Conference Series JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Environmental Science Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Pendas : Jurnah Ilmiah Pendidikan Dasar JPF : JURNAL PENDIDIKAN FISIKA Jurnal Kumparan Fisika Indonesian Review of Physics (IRiP) Generation Journal Ihsan: Jurnal Pengabdian Masyarakat Navigation Physics : Journal of Physics Education Ekonomi Bisnis Manajemen dan Akuntansi (EBMA) Proceeding International Seminar of Islamic Studies Al-Afaq: Jurnal Ilmu Falak dan Astronomi Cakrawala: Jurnal Pengabdian Masyarakat Global Edutainment : Jurnal Ilmu Pendidikan dan Kependidikan Jurnal Pengabdian Masyarakat Indonesia Sejahtera Cendikia Pendidikan Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Bumi: Jurnal Hasil Kegiatan Sosialisasi Pengabdian Kepada Masyarakat Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Cakrawala Akademika
Abu Yazid Raisal
Universitas Muhammadiyah Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Pemanfaatan Metode Moving Average dalam Menentukan Awal Waktu Salat Subuh Menggunakan Sky Quality Meter (SQM) Abu Yazid Raisal; Yudhiakto Pramudya; Okimustava ,; Muchlas ,
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 5, No 1 (2019)
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.72 KB) | DOI: 10.30596/jam.v5i1.3121

Abstract

The beginning of prayer time is important for Muslims because Islam advocates for prayer at the beginning of time. The beginning of Zuhr, Asar and Maghrib prayer times can be done by looking position of the Sun directly. However, the position of the sun cannot be directly observed to determine the beginning of the Fajr and Isha prayer times, because the Sun is below the horizon. The beginning of the Fajr prayer time can be determined by measuring sky brightness using the Sky Quality Meter (SQM). Many factors can affect SQM in collecting light so that the data is not separated from noise. The use of the moving average method reduces noise, making it easier to determine the beginning of the Fajr prayer time using SQM.
PENGEMBANGAN MEDIA AJAR LUBANG HITAM MENGGUNAKAN MODEL PENGEMBANGAN ADDIE Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Abu Yazid Raisal
Jurnal Kumparan Fisika Vol 4, No 2: Agustus 2021
Publisher : Unib Press, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jkf.4.2.112-119

Abstract

Salah satu faktor yang dapat menyebabkan kesulitan dalam proses pembelajaran adalah pendidik tidak menggunakan alat peraga.  Lubang hitam merupakan suatu daerah dalam ruang-waktu dengan medan gravitasi begitu kuat bahkan cahaya tidak dapat lolos. Hal ini mengakibatkan lubang hitam tidak dapat diamati secara langsung. Penelitian ini bertujuan untuk mengembangkan sebuah media ajar tentang lubang hitam di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU). Jenis penelitian ini adalah Research and Development (penelitian dan pengembangan). Model pengembangan yang digunakan adalah model pengembangan ADDIE (Analysis, Design, Development, Implemetation, dan Evaluation). Penelitian ini dibatasi hanya sampai tahap Development. Berdasarkan penilaian dari dua validator untuk media, rata-rata nilai yang diperoleh adalah 76,88%. Dari segi media, media ajar lubang hitam ini masuk kategori cukup layak untuk dikembangkan. Berdasarkan penilaian dari dua validator untuk materi, rata-rata nilai yang diperoleh adalah 80,36%. Dari segi media, media ajar lubang hitam ini masuk kategori layak untuk dikembangkan. Rata-rata validasi dari ahli media dan ahli materi adalah 78,62% dengan kategori cukup layak.
Perbandingan Perhitungan Waktu Shalat Menggunakan Astrolabe RHI dan Accurate Times Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Muhammad Hidayat; Abu Yazid Raisal; Hariyadi Putraga
Al-Ahkam Jurnal Ilmu Syari’ah dan Hukum Vol. 6 No. 2 (2021): Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum
Publisher : IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/alahkam.v6i2.3416

Abstract

This study aims to determine the comparison of the calculation of prayer times using the RHI Astrolabe and Accurate Times Software. In addition, this study also describes in detail the steps in determining prayer times using the RHI Astrolabe and Accurate Times Software. The research method used in this study is experimental. The results of this study indicate that there is a difference in the calculation of prayer times on December 20 between the RHI Astrolabe and Accurate Times Software. The difference between Asr is 8 minutes, Isha 6 minutes and Fajr 1 minute. Meanwhile, during Zuhr, Maghrib and Shuruq there is no difference in the calculation of the RHI Astrolabe with the Accurate Times Software.   Penelitian ini bertujuan untuk mengetahui perbandingan perhitungan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Tujuan penelitian lainnya adalah untuk menjelaskan secara rinci langkah-langkah dalam menentukan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Adapun metode penelitian yang digunakan dalam penelitian ini yaitu eksperimen. Hasil penelitian ini menunjukkan bahwa terdapat selisih perbedaan perhitungan waktu shalat pada tanggal 20 Desember antara Astrolabe RHI dengan Software Accurate Times. Adapun selisih pada waktu Ashar 8 menit, Isya 6 menit dan Subuh 1 menit. Sedangkan waktu Zuhur, Maghrib dan Syuruq tidak ada perbedaan pada perhitungan menggunakan Astrolabe RHI dan Software Accurate Times.
THE FALAK SCIENCE OBSERVATORY OF UNIVERSITY OF MUHAMMADIYAH NORTH SUMATRA (OIF UMSU) AND THE CONTRIBUTION IN FAJR TIME RESEARCH Arwin Juli Rakhmadi; Abu Yazid Raisal; Muhammad Hidayat; Hariyadi Putraga; Isra Hayati
Proceeding International Seminar of Islamic Studies INSIS 2 (January 2021)
Publisher : Proceeding International Seminar of Islamic Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.997 KB)

Abstract

The Falak Science Observatory of the University of Muhammadiyah North Sumatra (abbreviated OIF UMSU) is an observatory that is engaged in the study and research of Islamic Astronomy. Structurally, this institution is under the auspices of the University of Muhammadiyah North Sumatra (UMSU). One focus of The Falak Science Observatory of the University of Muhammadiyah North Sumatra is the fajr time (true dawn) research by using Sky Quality Meter (SQM) instruments. OIF UMSU's Fajr time research data has compiled up to hundred data (days), collected from 2017 to 2020. Besides, some of OIF UMSUs data also been utilized by various parties in the research and development of the dawn study and Falak science in general. This article will present at a glance about OIF UMSU and the contribution to Fajr Time research using Sky Quality Meter.
Effectiveness Of Active Learning Method Quiz Team Type On Student Learning Outcomes In Subject Ohm Law In SMA Negeri 1 Pundong Abu Yazid Raisal; Nanang Suwondo
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.716

Abstract

This study aims to measure the increase in student learning outcomes from cognitive aspects and student activity between active quiz type learning methods and conventional methods. The sampling technique is non-random sampling. Data was collected using the pre-test and post-test for cognitive aspects while the affective aspects used the observation. Analysis of the data used the normality test, homogeneity test, and hypothesis testing. The hypothesis test used is a two-party t test. The results show that tcount= 7.273 > ttable= 2.01 at a significant level of 5%. It means that there are significant differences for cognitive aspects between learning outcomes using the team quiz type and conventional methods of active learning methods. Overall the team quiz method is more effective for improving student learning outcomes from cognitive aspects, and student activities.
Measuring the Apparent Magnitude of Planet Mars on August 1st and October 2nd, 2018 at the Falak Observatory at Muhammadiyah University of North Sumatera Muhammad Hidayat; Arwin Juli Rakhmadi; Abu Yazid Raisal
Indonesian Review of Physics (IRiP) Vol. 3 No. 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i1.1838

Abstract

The Bright stars that were seen by the eyes are the received quantity of the energy flux sent from the celestial body. The energy flux is inversely proportional to the distant quadrant which means that the light of the stars that are visible to our eyes cannot be compared to the actual brightness or even weaker than the others and the visible star lights the apparent magnitude. The purpose of this study is to measure the apparent magnitude of Mars. This research methodology is quantitative, by taking number of images/videos of Mars and then the data is processed by using IRIS software. The results of the analysis is using IRIS software that shows the value of the apparent magnitude of Mars on August 1st, 2018 is (-1.56 ± 0.33) and October 2nd 2018 is (-1.84 ± 0.08). This was taken by selecting the best image result in clear night sky.
The Effect of the Installation Angle of the Sky Quality Meter on the Night Sky Brightness and the Beginning of the Fajr Prayer Time Abu Yazid Raisal; Muhammad Hidayat; Leo Hermawan; Arwin Juli Rakhmadi
Indonesian Review of Physics (IRiP) Vol. 3 No. 2 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i2.2074

Abstract

Measuring the brightness of the night sky and determining the start of Fajr prayer times can be done using SQM. Observations were made at OIF UMSU with coordinates 3o 34' 55.06" N and 98o 43' 17.09" E. The sky brightness was measured using three SQMs mounted facing the zenith, eastern horizon, and western horizon. The night sky brightness values for SQM directed to the zenith, eastern horizon, and western horizon are 18.23 mpsas, 15.82 mpsas, and 15.47 mpsas. The beginning of fajr prayer time produced by SQM is after the beginning of fajr prayer time obtained using the Accurate Times concerning the Sun's altitude 18o below the horizon. The difference obtained by SQM directed to the zenith, eastern horizon, and western horizon is 29.5 minutes, 36.7 minutes, and 39.5 minutes. In other words, the beginning of Fajr prayer time used in Indonesia is earlier than it should be.
ANALISIS PENGARUH APHELION DAN PERIHELION TERHADAP SUHU MENGGUNAKAN WEATHER STATION Abu Yazid Raisal; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
Jurnal Environmental Science Vol 3, No 2 (2021): April
Publisher : UNIVERSITAS NEGERI MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.597 KB) | DOI: 10.35580/jes.v3i2.19996

Abstract

Matahari merupakan sumber energi utama bagi kehidupan di Bumi. Perubahan aktifitas Matahari jangka panjang memegang peranan penting dalam perubahan iklim global. Perubahan iklim tersebut menyebabkan naik turunnya suhu di permukaan bumi. Pancaran cahaya Matahari tersebut membawa energi bahkan radiasi. Total radiasi yang diterima dipermukaan bumi dipengaruhi oleh jarak Matahari, intensitas radiasi Matahari, panjang hari. Jarak Matahari selalu berubah sepanjang tahun dikarenakan orbit Bumi mengelilingi Matahari berbentuk elips. Saat Bumi berada pada jarak terdekat dengan Matahari disebut perihelion. Saat Bumi berada pada jarak terjauh dari Matahari disebut aphelion. Penelitian ini bertujuan untuk mengetahui pengaruh aphelion dan perihelion terhadap suhu di kota Medan menggunakan weather station. Aphelion dan perihelion tidak memiliki dampak yang signifikan terhadap suhu Bumi. Ketika jarak Bumi paling dekat dengan Matahari (perihelion), suhu Bumi justru lebih rendah dibandingkan dengan saat jarak Bumi paling jauh dengan Matahari. Suhu Bumi sedikit lebih tinggi pada bulan Juli dikarenakan bagian utara planet Bumi yang padat akan daratan lebih condong ke arah Matahari, dimana daratan lebih cepat panas dibandingkan dengan lautan. Selain itu suhu di permukaan Bumi juga dipengaruhi oleh pola angin.
SIMULATION OF FREE ENERGY OF MIXING FOR A POLYMER SOLUTION USING A SPREADSHEET FOR LEARNING ACTIVITIES Abu Yazid Raisal; Rosynanda Nur Fauziah; Heru Kuswanto
Jurnal Pendidikan Fisika Vol 12, No 2 (2023)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpf.v12i2.52810

Abstract

Teaching physics is sometimes difficult to convey without using props or visualizations. Simulations can help teachers create and demonstrate real conditions in front of the class. In this article, we describe the usage of spreadsheets in simulating Gibbs free energy in mixing polymer solutions. We have created an model for the simulation consisting of a main spreadsheet and several secondary spreadsheets. A spreadsheet was chosen to simulate Gibbs free energy because spreadsheets can perform numerical representations in tables. This simple simulation can be used when discussing the topic of polymer thermodynamics. Teachers can start by deriving mathematical equations and then show simulations to visualize the equations. Another option is for students to be asked to create their simulations after deriving a mathematical equation. Using simulation in learning can make learning more interactive and help students understand material physics subjects more easily. Spreadsheets can be an alternative for teachers when explaining abstract material to students. Furthermore, simulations with spreadsheets can also support physics learning remotely.
Pelatihan Pembuatan Peta Bintang Pada Masyarakat Di Danau Lau Kawar Ida Hanifah; Abu Yazid Raisal; Arwin Juli Rakhmadi; Muhammad Hidayat
Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Vol 1, No 1 (2024)
Publisher : Azkayra: Jurnal Pengabdian Masyarakat dan Sosial

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55311/azkayra.v1i1.8

Abstract

Astronomi merupakan cabang ilmu pengetahuan tertua yang mempelajari tentang langit dan segala yang ada didalamnya. Pengamatan benda langit merupakan elemen yang penting untuk mempelajari astronomi karena dapat mengembangkan keterampilan, meningkatkan pemahaman tentang konsep astronomi, dan membantu menumbuhkan minat. Minat masyarakat Indonesia terhadap astronomi semakin meningkat namun kendalanya astronomi tidak diajarkan secara khusus di sekolah. Salah satu pembahasan yang ada dalam astronomi adalah planisphere. Planisphere atau peta bintang merupakan alat yang digunakan untuk mengidentifikasi bintang dan rasi bintang di langit malam. Tujuan pengabdian ini adalah untuk mengenalkan peta bintang baik dalam teori dan penggunaannya serta melatih cara membuat peta bintang secara mandiri. Kegiatan ini dilakukan dalam tiga tahap yaitu pendahuluan, pembuatan, dan evaluasi. Berdasarkan tanggapan peserta diketahui bahwa peserta menyukai kegiatan ini karena menyenangkan dan dapat menambah ilmu. Kendala yang didapatkan saat melakukan kegiatan adalah pada saat peserta mencoba menggunakan peta bintang yang sudah dibuat karena kondisi langit yang berawan. Keyword : Astronomy, Planisphere, Lau Kawar.
Co-Authors Abdurrohman Chapakiya Ananda, Fadilla Sayu Anggraini, Maya Dita Ariswan Ariswan Arwin Juli Rakhmadi Aryunita, Srika Butar Butar, Arwin Juli Rakmadi Diyah Anggraini Edy Ervianto Fadilla Sayu Ananda Firdaus, Muhammad Dimas Hadi Ismail, Abdul Hariyadi Putraga Hasibuan, Alya Fathi Muhammad Hasrian Rudi Setiawan Hassan, Rohana Hermawan, Leo Heru Kuswanto Hidayat, Muhammad Hizami Sabil Ida Hanifah Isra Hayati Jen Agus Perry Hasibuan Jf, Nurul Zahriani Khair, Alfath Leo Hermawan Marataon Ritonga Mavianti, Mavianti Mega Sukma Muchlas , Muchlas Muchlas Muhammad Hidayat Mustofa Ahyar Nanang Suwondo Nanang Suwondo Nilfa Zalukhu Noveri Lysbetti M Nurhalim Nurhalim, Nurhalim Nurul Zahriani Jf Okimustava Okimustava Rahyul Amri Rihan Yuhyi Rizka Harfiani Rizkiyan Hadi Rosynanda Nur Fauziah Rosynanda Nur Fauziah Sakti Hutabarat Siagian , Ruben Cornelius Taufiq Iradah Telaumbanua Vira Aurel Yudhiakto Pramudya Yuhyi, Rihan