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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 9 Documents
 1 
Search results for , issue "Vol 10 No 1 (2024)" : 9 Documents clear
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).
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.
Quantum Physics Lecture Profile in Supporting Student Computation Thinking (CT) Integration Program Riskawati Riskawati; Dadi Rusdiana; Hendra B
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.v8i2.23343

Abstract

The purpose of this study is to describe how the profile of lecture needs related to content in quantum physics at the UNTIRTA Physics Education Study Program. The methods used in this field study are: 1) paper, in the form of curriculum documents, national curriculum and RPS; 2) person, lecturer in quantum physics; 3) the place is located in the Department of Physics FMIPA UNTIRTA. Data collection techniques in field study activities are carried out using non-test instruments carried out through document analysis, questionnaires, interviews and tests.  The results of the analysis show that the curriculum of the Quantum Physics Study Program (compulsory) in semester V has not been well developed and is not specifically designed to consider students' deep conceptual understanding, the assessment system has not been able to appropriately follow the 21st century learning system, and learning has not been student-centered. Therefore, an analysis is needed based on the needs of a more in-depth study program to determine the topic of study materials in the Quantum Physics course if it is to be applied in the curriculum. 
Structural characterization of SnS thin films prepared by vacuum evaporation technique Ganesha Antarnusa
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.v10i1.27912

Abstract

Tin Sulfide (SnS) thin films were fabricated using vacuum evaporation techniques under a pressure of approximately 2×10⁻⁵ mbar. Cleaned microscope glass substrates were utilized, with a substrate temperature maintained at 300 K. The deposition of the SnS thin films was conducted by placing spacers between the substrate and the source at distances of 10 cm, 15 cm, and 25 cm. The study of SnS thin films included X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive analysis X-ray (EDX). The XRD patterns of the SnS thin films revealed good crystallization and confirmed the presence of an orthorhombic crystal structure with lattice parameters for sample 1 (10 cm spacer): a = 4.308 Å, b = 11.142 Å, c = 4.132 Å; sample 2 (15 cm spacer): a = 4.305 Å, b = 11.101 Å, c = 4.217 Å; and sample 3 (25 cm spacer): a = 4.081 Å, b = 11.135 Å, c = 4.292 Å. The preferred orientation was along the (0 4 0) planes for all films. Lattice parameters, grain size, and microstrain in the films were calculated from XRD patterns and correlated with the substrate spacer. Grain size distributions were derived from SEM micrographs, revealing a grain size of approximately 0.5 μm. EDX analysis indicated the chemical composition of the sample, with elements Sn = 37.86% and S = 13.58%.
Profile of Science Inquiry Literacy (SIL) achievements of pre-service physics teacher using rasch model measurements Dina Rahmi Darman; Andi Suhandi; Ida Kaniawati; Achmad Samsudin
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.v10i1.22769

Abstract

Pre-service physics teachers must have Scientific Inquiry Literacy (SIL) to prepare to teach physics. This research aims to describe the SIL profile of Pre-service physics teachers using the Rasch model. The mixed method with Convergent Parallel Design was chosen for this research. The mean value of the knowledge aspect is 6.1 (the top score is 35). Person measures -1.96, person separation 0.45, and person reliability 0.17. This condition shows that the consistency of the answers is still low, and the ability is low. The mean value, person measure, and separation of the skill aspect are 10.8 (the top score is 39), -1.10, and 0.00. This condition shows low ability and low diversity. The mean value for the attitude aspect is 79.5 (the top score is 108). Person size, separation, and reliability are 1.33, 2.01, and 0.8. This condition indicates a high ease of agreement on items with a wide variety and a good consistency of answers. The interviews and lesson plan analysis results show that pre-service physics teachers have yet to become accustomed to applying scientific inquiry in learning. Thus, the SIL in the knowledge and skills aspects of and the ability to design inquiry teaching still needs to be improved.
Comparison of Microstructures and Magnetic Characteristics of CoFe2O4/PEG and MnFe2O4/PEG for Drug Delivery System Application Joko Utomo; Hafiz Sub’han
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.v10i1.28748

Abstract

CoFe2O4/PEG and MnFe2O4/PEG materials have been successfully prepared using the coprecipitation method with a synthesis temperature of 90 °C. Doxorubicin (DOX) was successfully loaded and released in both samples. Based on the XRD results, the crystal structure of CoFe2O4/PEG is cubic spinel while the structure of MnFe2O4/PEG is hematite with the lattice parameters for CoFe2O4/PEG and MnFe2O4/PEG is 8.40 nm and 8.41 nm, respectively. Based on the SEM results, the morphology of the two samples is quite homogenous and the particle size of CoFe2O4/PEG is smaller than MnFe2O4/PEG’s. There is a vibrational spectrum of Fe – O  in both samples at wave numbers of 600 - 690 cm-1. Based on VSM characterization, CoFe2O4/PEG is included in hard magnetic materials with a saturation magnetization of 54.85 emu/g and coercivity of 788 Oe. Meanwhile, MnFe2O4/PEG is classified as soft magnetic materials with lower saturation magnetization of 11 emu/g and coercivity of 7.42. In addition, based on the UV-Vis characterization obtained the efficiency of drug loading of CoFe2O4/PEG is higher (98.8 %) than the MnFe2O4/PEG sample (96.3 %). It is the opposite for the drug release percentage that CoFe2O4/PEG has 30.6 % which is lower than the MnFe2O4/PEG (51.6 %).
DIY photometer in determining the beginning of dawn time in Cimahi City Cahyo Puji Asmoro; Hana Susanti; Judhistira Aria Utama; Dhani Herdiwijaya
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.v10i1.22873

Abstract

The use of SQM as a calibrated portable photometer is currently a hot topic in astronomical research in terms of measuring the brightness of the night sky; DIY Sky Quality Meter (SQM) with the name Photometer D.I.Y – CJ'01 has been successfully made and tested on a limited basis, the output data obtained by the photometer This is the magnitude value per square arc second (mag/sq arc second ~ mpsas). This research aims to determine the performance of the D.I.Y - CJ'01 Photometer in measuring the night sky's brightness to determine the start of dawn. The research method used was an experiment with data collection from the D.I.Y Photometer – CJ'01 and SQM Unihedron in Cimahi City during the New Moon and Full Moon. The results of data processing using the solver method show that the D.I.Y - CJ'01 Photometer has almost the same performance as the SQM Unihedron based on the inflection point value that determines the start of dawn and also indicates the existence of pseudo-night in the city of Cimahi which is by typical urban areas dominated by light pollution and air pollution
Modeling Waste Generation in the Gayamsari Sub-district Service Trade Area with a Spatial Approach Orzhe Elantry Faiz; Maryono Maryono
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.v10i1.28920

Abstract

Based on the Semarang City Regulation No.5 of 2004 concerning the Semarang City Spatial Plan 2000-2010 Article 11, Gayamsari Sub-district is included in BWK V, which is an area with the center of trade, office, and residential activities that contribute greatly to the increase in waste generation in Semarang City every year. The existence of this waste problem requires a study in the form of an identification study related to waste generation consisting of characteristics, volume, and composition of waste visualized through spatial modeling. In this study, waste generation was measured in 30 sample shops in the trade and service area of Gayamsari Subdistrict, then the analysis used was Descriptive Statistical analysis, GIS analysis, and Moran's I analysis. The research results generated from the implementation of this research are waste generation data in the form of total weight of waste generation, weight per type of waste, average weight of waste, and type of waste composition, through spatial analysis resulting in mapping the location of sample stores, the level of waste, and the range of neighborhoods around the store, and through Moran's I analysis resulting in the identification of spatial autocorrelation between sample stores, the form of spatial patterns, and hotspot maps of waste generation distribution. The resulting research results are used to draw conclusions on the application of the non-residential urban area waste measurement method in SNI 19-3964-1994.
Principles of quantum physics: A phenomenological study of illegal mining in the construction of social justice Widiatmoko, Dekki; Saputra, Dedi; Jubaidi, Didi
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.v10i1.29227

Abstract

Illegal mining, better known as illegal mining, is a complex multidimensional problem. This study uses a phenomenological lens to explore the deep meaning of the experiences of illegal mining actors in the Merangin Regency, Jambi. The findings of this study consistently show that severe economic pressures, combined with limited access to education and job opportunities, are the main drivers of community involvement in illegal mining activities. Informants explicitly stated that they knew their actions' legal and environmental implications but felt trapped in a difficult situation. By adopting a quantum physics lens, this study emphasizes that individuals, like subatomic particles, are often in a state of superposition between various choices, trapped in moral and economic dilemmas. This approach offers an innovative analytical framework for understanding the complexity of contemporary social problems. To overcome this problem, comprehensive efforts involve expanding economic opportunities, developing community capacity, and enforcing fair and community-friendly laws. Overall, this study highlights the importance of understanding the social and economic contexts that underlie community involvement in illegal mining activities. By adopting an interdisciplinary approach combining qualitative methods and quantum physics concepts, this study significantly contributes to developing more effective policies and intervention programs in addressing this problem.  

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