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Yudi Guntara
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Departemen of Physics Education Faculty of Teacher Training and Education Universitas Sultan Ageng Tirtayasa Jl. Raya Ciwaru No. 25, Sempu, Kota Serang, Banten, 42117.
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Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 2442515X     EISSN : 25281976     DOI : http://dx.doi.org/10.30870/gravity.vxix
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
The focuses of the manuscript received in the Gravity journal is limited to the topic: Physics Education (Media, Educational Policy, Assessment, Learning Model) Theoretical Physics Material Physics Earth and Environmental Physics Astrophysics Medical Physics Computational Physics and Instrumentation
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 208 Documents
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Ondel-ondel: ethno-physics-based learning media to achieve meaningful learning on rigid body equilibrium material Dwi Susanti; Slamet Maulana
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i2.19606

Abstract

Ondel-ondel is one of the well-known local cultures from Jakarta. However, the role of ondel-ondel is not only in switching ceremonies and rituals but can be used as learning media. In addition to local cultural problems that are still not optimal in learning, the learning process must be carried out meaningfully. So, this study aims to analyze ondel-ondel culture from the point of view of Physics (especially on rigid body equilibrium material) and to implement it as learning media in Physics learning to achieve meaningful learning. This research is a mixed method research. Based on the results and discussion obtained, ondel-ondel has many physics concepts. In ondel-ondel, rigid body equilibrium is of special concern because equilibrium is the main focus so that the ondel-ondel remains stable when played without falling. In ondel-ondel culture, the concept of circular motion and heat also applies. The second conclusion obtained from this study is that the implementation of ondel-ondel as a learning medium is proven to realize meaningful learning for students. Achieving meaningful learning through implementing an ondel-ondel as learning media has very good criteria.
Aplikasi Metode Volumetrik dalam Estimasi Potensi Panas Bumi Berdasarkan Parameter Fisis Reservoir (Studi Kasus Daerah Panas Bumi “Z”) Latifah Nurul Qomariyatuzzamzami; Zuhdiyah Matienatul Iemaaniah; Alamta Singarimbun
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i2.20474

Abstract

Geothermal is a renewable energy strategically developed in Indonesia, but its utilization has not been maximized. Geothermal exploration requires high costs, so estimating energy reserves in potential areas is essential. This study was conducted to determine the electrical energy potential of geothermal area "Z" by volumetric method and determine the influence of saturation, porosity, and length of generation time on the potential of geothermal electrical energy. The volumetric method used is the lumped parameter model. The calculation was carried out with variations in water saturation 0% - 80%, rock porosity 10% - 40%, and the length of generation time 25 - 40 years. The highest estimated electrical energy of geothermal area "Z" is 188 MWe obtained at 80% water saturation, 10% porosity, and 25 years generation duration, while the lowest is 80 MWe obtained with 0% water saturation, 40% porosity, and 40 years of generation duration. At the same porosity, the greater the water saturation, the greater the value of geothermal electricity reserves of the area "Z." The greater the porosity, the greater the effect of increasing water saturation on increasing electrical energy reserves. The large porosity of rocks causes their energy to be smaller since the heat dominance of geothermal regions "Z" is given by the heat of rocks. The length of generation time affects the amount of geothermal electrical energy, that is, the longer the production time, the smaller the reserve.
Utilization of neem trees (Azadirachta indica) as biopesticide from ancient India to Indonesia: an ethnographic study based on literature review Muhammad Arif Rahman; Sholeh Hidayat; Ujang Jamaludin; Suroso Mukti Leksono
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i2.20454

Abstract

One of the biopesticides is derived from The Neem Tree (Azadirachta indica), which has been widely used in India for centuries. The purposes of this study are to examine the historical use of neem trees as biopesticides in ancient India, the adoption and integration of neem tree-based biopesticides in Indonesian agriculture, the cultural and historical context of neem tree use, and the impact of neem tree-based biopesticides on sustainable agriculture. The research design for this study is an ethnographic approach, which involves the systematic observation, documentation, and analysis of the cultural practices and beliefs related to using neem trees as biopesticides. The findings of this study demonstrate that the Neem tree has been widely described as a biopesticide used to control pests in agriculture in ancient Indian literature, such as the Rigveda and Atharvaveda. The neem tree held cultural and spiritual significance in ancient Indian society, associated with deities and religious beliefs. Historical connections between India and Indonesia facilitated the spread of neem tree-based biopesticides to Indonesia, where they were adopted and integrated into traditional agricultural practices. Indonesian farmers embraced neem tree-based biopesticides and recognized their efficacy in pest control, contributing to sustainable agricultural practices.
Development of visual thinking strategy in augmented reality (ViTSAR) to facilitate visual literacy skills on magnetic field material Yudi Guntara; Asep Saefullah; Yayat Ruhiat; Alifya Nabila Subaedi
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i2.22330

Abstract

Students poorly understand the magnetic field material concept due to difficulties visualizing it. So, it takes a skill that can support the ability to visualize magnetic field material to practice these skills requires the right strategy and learning media. Therefore, this study aims to develop and determine the feasibility and response of students to the acceptance of Visual Thinking Strategy in Augmented Reality (ViTSAR)  learning media technology to facilitate visual literacy skills on magnetic field material. The research method used is Research and Development  (R&  D) with a  4-D development model (Define, Design, Develop, and Disseminate). Through due diligence conducted by material experts, the average value of all aspects was 6.7 with feasible criteria, and media experts obtained an average value of 6.81 with feasible criteria. In contrast, the trial was limited to 15 3rd-semester students of  Physics Education at Sultan Ageng Tirtayasa University, who responded well to technology acceptance with an overall average assessment result of 6.36. These results show that ViTSAR learning media on magnetic field material can be used as a learning supplement in introductory Physics II lectures on magnetic field material.
Perkembangan Terkini Penggunaan Resistivitas Geolistrik Untuk Survei Longsor : Sebuah Tinjauan Selly Feranie; Adinda Pramesti Wahyuning Putri; Amata Kara Perdani Handiman; Adrin Tohari
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i2.19876

Abstract

The peak of the rainy season in 2022/2023 has caused many disasters, especially landslides in Indonesia, which have claimed many victims and caused damage to settlements and infrastructure. Various geophysical methods have been widely applied to identify slip fields. In addition, geophysical methods are used to determine the type and characteristics of landslides. The slip field has a lithology of 2 subsurface layers of soil or contrasting rocks, namely soft and hard soil layers. Therefore, one of the geophysical methods that is effective in identifying slip planes is the geoelectric method because of the stark contrast in resistivity in the two soil layers. This article will review research that uses geoelectric data to survey landslide potential in the last ten years. In addition, this article also reviews the latest research related to geoelectricity, namely Time-Lapse Electrical Resistivity Tomography (TL-ERT), starting from studies that have used this method and the potential and direction of using this method in the future.
Development of an Interactive Digital Physics Module (IDMP) on the Concept of Global Warming to improve students' Problem Solving Skills Fajrin, Virgiani Pangestika; Wibowo, Firmanul Catur; Nasbey, Hadi; Bunyamin, Muhammad Abd Hadi; Khamis, Noorzana Binti
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.27020

Abstract

Problem Solving Skills (PSS) are essential skills in life because they help students find creative and innovative solutions to various complex problems. Apart from that, global warming is one of the physics materials studied in Phase E of the Independent Curriculum. Through learning with the Interactive Digital Physics Module (IDMP), students can learn scientific principles and concepts to solve problems. However, so far physics learning has focused more on physics products, while aspects of scientific processes and attitudes that should be trained are often neglected. The aim of this research is the development of an interactive digital physics module (IDMP) on the concept of global warming to improve students' problem solving skills. This research method uses the ADDIE model with a total sample of 37 consisting of 10 males and 27 females regarding the problem solving skills of students in one of the schools in Banten Province, Indonesia. The results of the research show that the characteristics of the IDMP on the concept of global warming for student learning and the Problem Solving Skills test consisting of 4 indicators Clearly defining the problem increased by 0.71, Developing a plan of action increased by 0.72, the effectively implementing the plan indicator increased by 0.63 and the valuing indicator and reflecting on the outcome increased by 0.65 category. The average N-gain result of these four indicators is 0.69, meaning that students' problem solving skills have increased in the moderate category.
Pengembangan Virtual Laboratory Berbasis HOTS dengan VBA Excel: Meningkatkan Pemahaman Konsep Suhu dan Kalor Afifah Agustina; Fathiah Alatas; Dzikri Rahmat Romadhon
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10 No 1 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i1.23823

Abstract

This research discusses the limited tools and rare temperature and heat experiments in high schools in Depok, which hinder students’ mastery of concepts and higher-order thinking skills (HOTS). This study proposes a virtual laboratory with VBA Excel that utilizes existing computer lab facilities and provides an effective and efficient way to learn physics1. The research method used is Research and Development (R&D) with the ADDIE model. Media and material experts validate the product, then tested by teachers and students using a tiered rating scale. The feasibility test scores from media experts are 93.61%, material experts 86.25%, and teacher responses 94.07%, with a very good interpretation. Furthermore, user trials were conducted with students, where one-on-one trials obtained a score of 90%, small group trials resulted in a score of 81.6% and field trials with a score of 81.48%. Based on the N-gain calculation, scores of 0.67 for small groups and 0.63 for field trials were obtained with moderate interpretation seen from the results of the pre-test and post-test scores calculation. Thus, it can be concluded that the virtual laboratory with VBA Excel on temperature and heat material can improve concept understanding and meet students' needs in higher-order thinking skills (HOTS).
Comparison of friction coefficient of static and sliding determination methods: conventional, video tracking and IoT-based Gideon, Samuel; Sumarti, Heni
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.27940

Abstract

The prevalent physics parameter in the concepts of friction are the friction coefficient of static and sliding. The objective of this research is to determine the friction coefficient of static and sliding by means of conventional measurement, video-tracking as well as proposed IoT-based measurement likewise to compare the results of each methods correspondingly theoretical references. Two universal systems in determining friction coefficient of static and sliding are reproduced, involves both conventional and IoT-based measuring instruments: flat block against flat runway and flat block against inclined runway. Video-tracking is the most precise between conventional and IoT-based method as its %RSD mean value of interval reading and angle of inclination respectively 6.22% and 0.88%. In case determination of friction coefficient of static three methods have equal %TE mean value of 22.85% for oak-based block on cast iron plank excluded slightly 0.49% of differences than assumed %TE value of video-tracking. Each methods are considerably accurate since each friction coefficient of sliding are theoretical values required range of 0.300 – 0.500. for oak-based block on cast iron plank IoT-based measurement has the smallest mean value of %TE indicating most accurate between two other methods.
Characterization of the cough monitoring device for TB patients based on the MAX9814 sound sensor Musfiana, Masria; Widodo, Aris; Annas, Muhamad Azwar
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.28340

Abstract

Mycobacterium tuberculosis is the cause of tuberculosis (TBC), one of the deadliest diseases in the world that affects the respiratory system. One of the nations having the highest number of tuberculosis cases worldwide is Indonesia. Health professionals must improve patient monitoring as one way to address this issue. This work aims to compile and describe monitoring instruments. The monitoring sensor is intended to help medical professionals treat patients and raise the quality of life for TB patients. Using advancements in technology, specifically the Internet of Things (IoT) to remotely operate electronic equipment, the Arduino Cloud Web serves as a platform for transmitting and storing patient cough data, enabling medical professionals to Recognize the intensity of the cough at any moment and act accordingly. Data on the sensor's accuracy and error values, sensitivity, repeatability, precision, and resolution are gathered as part of this monitoring sensor characterisation process. The instrument was calibrated using an Audiosensor with a 1000Hz audio generator and an SLM (Sound Level Meter) calibrator prior to data collection. The investigation yielded excellent results, with an accuracy rating of 96,14% and an error of 3,86%. This figure is reasonably close to the estimated value of 5% that has been calculated for the Gaussian distribution. The SLM with a sensor has an average value of 0.05, whereas the audiotool has a sensor value of 0.02. 50% is the repeatability value, 0.01% is the precision value, and 0.0125 is the sensor resolution.
ANALISIS SPEKTRUM DATA GAYABERAT GGMPLUS DAERAH WAYRATAI, LAMPUNG Syamsurijal Rasimeng; Ilham Dani; Widya Putri Syahranti; Ivana Jayarani Sitompul; Fadhil Muhammad Nizam
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10 No 1 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i1.23575

Abstract

The weight force method is a geophysical method that is sensitive to vertical changes, therefore this method is favored for studying intrusion contacts, bedrock, geological structures, ancient river deposits, holes in the rock mass, buried shaff, and others. The location of the research area is in the Way Ratai geothermal area, Padang Cermin District, Pesawaran Regency, Lampung Province. This research aims to determine the depth of regional and residual anomalies and to identify weight force anomalies based on 2-dimensional subsurface conditions. Five passes were sliced, namely A-A', B-B', C-C', D-D', and E-E' on the complete Bouguer anomaly cross section, and the resulting values of regional depth, residual, wavelength, and cutoff value as the boundary of the intersection between regional and residual anomalies. The complete Bouguer anomaly values range from 54 mGal to 100 mGal, the regional anomaly is 56 mGal to 90 mGal, and the residual anomaly is 19 mGal to 4 mGal. The depth of the regional anomaly is 5219.4m and the residual anomaly is at a depth of 336.77m.

Page 18 of 21 | Total Record : 208

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