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Journal : UPEJ Unnes Physics Education Journal

Pembelajaran Fisika Berbantuan Alat Peraga Proyektor Smartphone untuk Meningkatkan Pemahaman Konsep Optik pada Siswa SMP Nafisah, Durrotun; Sulhadi, Sulhadi; Yulianti, Dwi
UPEJ Unnes Physics Education Journal Vol 7 No 1 (2018)
Publisher : UPEJ Unnes Physics Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (772.711 KB) | DOI: 10.15294/upej.v7i1.22474

Abstract

Device props that developed is smartphone projector that was equipped by student work sheets. Smartphone projector props from simple materials and easy to find intheform of a water-filled bulb that the system works like a convex lens, so it can produce real, inverted, and zoomed in shadow properties. Student work sheets as a supplement containing the props instruction, material reviews, and evaluation questions. The result of feasibility test of practicum device categorized as very high with percentage 87.64%. Research and Development in the form of Pretest and Postest One Group Design carried out for thr test of respondents. This research was held in junior high school 3 Juwana. The effectiveness test analysis was performed by the N-Gain <g> test and questionnaire student response. Validation results by validators for smartphone projector with student work sheets showed average score of 87.64%, so the tool props are very suitable to use as instructional media. N-Gain test analysis showed pretest-posttest results were classified as medium criterion with a <g> value of 0.589 and 82.35% classical completeness that is high. The results of the analysis of student responses show the value of 78.76 with positive criteria  
Kisi Difraksi Sederhana Berbasis Alam : Bawang Daun (Allium fistulosum) dan Jantung Pisang (Musa paradisiaca) Nafisah, Durrotun; Mutiarani, Azizah; Hakim, Luqman; Marwoto, Putut; Fianti, Fianti; Subali, Bambang
UPEJ Unnes Physics Education Journal Vol 10 No 1 (2021)
Publisher : UPEJ Unnes Physics Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/upej.v10i1.46648

Abstract

Diffraction is one of the properties of light in the form of a bending event in the direction of the propagation of the waves through a narrow gap. Research on natural materials as an alternative to grating has been carried out with varying results. Natural ingredients in the form of scallion stems (Allium fistulosum) and banana heart (Musa paradisiaca) were chosen as the diffraction lattice preparations because they have fibers that resemble scratches on the diffraction grating produced by factories. Special care is given to each preparation to obtain the fiber. By using Tracker and analysis of the level of accuracy, the results obtained value m, and an accuracy of 95.81% for the diffraction grating of scallion stems, and the value of d = and accuracy of 90.01%. The results of this study indicate that scallion stalks and banana blossoms have potential and can be used as diffraction grating to explain light diffraction phenomena.
Co-Authors ABD GHOFUR Abd Ghofur Adam, Nurul Suciana Afifah, Silvi Nur Agung Stiawan Agustin Hanivia Cindy Agustinus Sugeng Priyanto Ahmad Sidi Amani, Tatik Amelia Nuriani Amin, M. Noer Falaq Al Anak Agung Gede Sugianthara Andi Gunawan Andi Gunawan Anis Hidayah Ardyagarani, Deswita Ari Khusumadewi Arina Eliana Fitria Ashif Alfarizi Asnimawati Asnimawati, Asnimawati Astutik, Nur Fithria Wiji Astutik, Nur Fitria Wiji AULIA RACHMA, EVI Ayu Maya Damayanti Bakhrudin All Habsy, Bakhrudin All Bambang Subali Dayu, Dian Permatasari Kusuma Dellarosa, Maretha Delnabila Dwi Olivia Dewi Liesnoor Setyowati Dhimas Bagus Virgiawan DWI YULIANTI Ely Rudyatmi, Ely Eva Amalia Eva Banowati Evi Winingsih, Evi Fadil SJ Fianti Fianti, Fianti Fithria Wiji Astutik, Nur Ganes Gunansyah Hamida, Amaliah Hamidi, Ahmad Luthfi Hendri Prastiyono Henry Januar Saputra, Henry Januar Herlina Fitrihidajati Hermawan, Dedi Joko Imam Athoir Rokhman Imron Fauzi Ismiah, Muniqotul Jannah, Beta Cahyatul Khoirul Hidayah Kusuma Dayu, Dian Permatasari Kuswanto Laila Sari Mawadati Lola Zahro Lulu’ Luthfiya MAHROINI, ZAHIDAH Mariana Mariana Marzuqi, Muhammad Ilyas Maskhurin Fajarina, Maskhurin Mei Fita Asri Untari Miftah Arifin Moch. Imam Machfudi Moch. Zakki Mubarok Mochamad Nursalim Moh. Sahlan Muhammad Ilyas Marzuqi Mundir Mustakim, Adam Mustika, Erika Winda Mutiarani, Azizah Naufal Daffa Saputra Ningsih, Moriska Hesti Ninies Eryadini Ninies Eryadini, Ninies Nisak, Khoiun Niswatin Nuansa Bayu Segara Nuansa Bayu Segara Nurlaily, Vivi Astuti Nurrohman, Aris Nurul Hasanah Nuryuni Ekawidya Widodo Pibriyanti, Kartika Prabawati , Indah Prastiyono, Hendi Prastiyono, Hendri Puji Hardati Putut Marwoto Rachma, Evi Aulia Rachmah, Aliya Nur RATNA NURDIANA Sanusi Sanusi Sari , Dian Anita Sari, Dian Anita Sayidatu Ulinuha Setyaningsih, Niken Dwi Sholihah, Tika Awwalus Sudji Munadi Sulhadi - Sulhadi Sulhadi Suparwoto Sapto Wahono Suryanti Suryanto, Hadi Susilo Toto Raharjo Teguh Darsono Testymona Gifta Setiawan Thriwaty Arsal Utami , Wiwik Sri Widyastuti, Nurrohmi Ambar Wiwid Adiyanto Youhanita, Ety Zahro, Putri Awalia Zainiyah, Rohilatuz Zid Amalia Khusniyati Zulfin Rachma Mufidah