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1021	Mechanical Engineering	ABS-764
Analysis of Number Propeller Blades on Traditional Boats 3 GT in Capacities with Speed Variation T.Endramawan*, A.Sifa, F. Dionisius, R.D.Rachman Politeknik Negeri Indramayu Abstract Limited range of fishing areas was one form of loss experienced by fishermen in Indonesia, especially fishermen who still use traditional boats 3 GT capacity. One of the problems with the drive component is the propeller. The propeller was used by fishermen usually. The design of propeller used 3 blades with less than maximum thrust load distribution and fluid velocity. The purpose of this study was to optimize the number of propeller blades in traditional boats 3 GT in capacities with variations in the number of blades 2, 3 and 4. Otherwise, speed used 700 RPM, 1200 RPM, 1700 RPM, and 2200 RPM in velocity. The method used CFD simulations by determining the amount of thrust load and fluid velocity through. The result of optimizing was 2 blades at 2200 rpm in speed whereas generates 2861 m/s in fluid velocity and 1.949 MPa in pressure. Keywords: Traditional Boats, Flow Simulation, Number of blade, Propeller Share Link | Plain Format | Corresponding Author (Tito Endramawan)

1022	Physics	ABS-268
THE DEVELOPMENT OF HARMONIC OSCILLATION E-MODULE BASED ON PROBLEM BASED LEARNING (PBL) FOR HELPING IMPROVEMENT OF STUDENTS’ HIGHER ORDER THINKING SKILLS (HOTS) Cecep E Rustana 1,a), Sitti Aminah1,b), Agus Setyo Budi1,c) 1 Physics Education, Postgraduate Program, Faculty of Mathematics and Natural Sciences, Jakarta State University, Indonesia Abstract This study aims to develop a Harmonic Oscillation e-module based on PBL for helping HOTS improvement of High School/MA students. The ADDIE Model of Research Development was applied in developing such e-module prior to measure improvement of students’ HOTS. The validation results of experts indicated the values of 78.1%, 93.8%, and 77.7% for media, content, and learning model, respectively. The trial result of teachers and a small and big groups of students respectively indicated an average score of 93.95% and 95.1% and 86.5% for all aspects of content eligibility, presentation, language and graphical eligibilities. Furthermore, The tgain test calculation shown that the tgain count (2.58) was bigger than tgain table (1.669) with 5% significance level. The analyzed result indicated that the improvement of HOTS of students which was taught with the PBL based e-module was better than those who utilized the non PBL based e-module of the Harmonic Oscillation. Whiles, the result of D’Cohen test indicated that the developed e-module was very decent to be utilized as learning media with contribution category of medium (based on d’Cohen test result of 0.64) for improving HOTS of High School/MA students Keywords: HOTS, E-module, Harmonic Oscillation, Problem Based Learning Share Link | Plain Format | Corresponding Author (Sitti Aminah)

1023	Physics	ABS-13
ETHNOMICOLOGY OF BASIDIOMYCOTA FUNGUS SPECIES IN CENTRAL KALIMANTAN OPEN FORESTS Noor Hujjatusnaini, Desi Erawati, Melis, Fajarudin Nor, Dedy Fadly Shartono, Yulisha Harlyani, Muhammad Zulham IAIN Palangka Raya Abstract The role of fungus Basidiomycota can be used as an indicator of wisdom and the level of maturity forest ecosystems, both as decomposers, symbionts, and pathogens. The existence of several species of edible mushrooms is also used by local communities as food and medicine. This study aims to identify the diversity of fungus species in Central Kalimantans open forests, as part of ethnomicological information. The method used was the purposive sampling technique. The results showed 3,715 fruiting bodies of mushroom from 120 species and 41 genera were found at the study site with moderate levels of biodiversity (R = 3.51; H = 2.14; D =0.68). Based on the study of ethnomicology information obtained 5 species of edible mushrooms that are commonly consumed by local communities, such as, cloud ear fungus (Auricularia polytricha), Oyster Mushroom (Pleurotus ostreatus), Hygrocybeal calc, Cantharellos, and Common Puffball (Lycoperdon pertatum). For the type of fungus that is used as an ingredient for disease treatment, 2 types are found, namely polyporus cinnabarius, and ganoderma. The research findings found that Central Kalimantans open forest biodiversity is still quite good, with a moderate level of diversity. Besides, ethnomicology can be developed as local wisdom in Central Kalimantan. Keywords: Ethnomicological, Basidiomycota fungus, open forest Share Link | Plain Format | Corresponding Author (Desi Erawati)

1024	Physics	ABS-783
Rock Density from Gravity Satellite to Laboratory Data, Study Case: Lamongan Volcanic Field, East java, Indonesia Sintia Windhi Niasari (a*), Ari Setiawan (a), Puspita Dian Maghfira (b), Yuni Indriyanti (c) a) Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Indonesia *sintia_windhi[at]ugm.ac.id b) Geological Engineering Department, Universitas Gadjah Mada, Indonesia Abstract The Lamongan volcano is located between the Semeru and the Argopuro volcanic complex in East Java, Indonsia and is classified as a dormant volcano. This means that the Lamongan volcano has possibility to erupt. Some geological and geophysical studies had been carried out in this area. Geologically, area in this volcano is covered by andesitic breccia and lava of Lamongan and Argopuro. Some studies about rocks density using satellite gravity data were also have been performed. However, a relation between geological and geophysical studies about rocks density of the Lamongan lava had not been done. Here, we test our hypothesis that surface geological sampling of rocks resulted in different rocks density with geophysical model from satellite data. Laboratory measurement of rocks samples resulted in lava density around 3.4 gr/cc while geophysical modelling from gravity satellite data show lava density around 3.1 gr/cc. Andesitic breccias from laboratory and modelling also display slightly different value, i.e. around 2.7 gr/cc and around 2.6 gr/cc, respectively. We infer that the rocks densities difference can be due to high degree differentiation between surface and subsurface condition. Further research is needed to compare rock density from subsurface (well) and from model. Keywords: rock density, gravity satellite, Lamongan volcano Share Link | Plain Format | Corresponding Author (Sintia Windhi Niasari)

1025	Physics	ABS-531
MASSIVE OPEN ONLINE SIMULATION (MOOS) OF PHYSICS CONCEPTS MICROSCOPIC FOR IMPROVING CREATIVE THINKING SKILLS I Made Astra (a*), Firmanul Catur Wibowo (a) aDepartment of Physics Education, Universitas Negeri Jakarta Jl. Pemuda 10, Rawamangaun, Jakarta 13220, Indonesia Abstract Physics consists of concepts that are macroscopic and microscopic, physics concepts that are microscopic or Physics concepts that are invisible or unobservable. If the phenomenon that is microscopic can be understood then the macroscopic phenomenon will also be easy to understand. This research aims to produce a Massive Open Online Simulation (MOOS) online course on microscopic concepts that enhances creative thinking skills. The research method used was Embedded Experiment Design with research subjects being 60 high school students at one campus in the province of Jakarta, Indonesia. The results showed that the average normalized gain score <g> creative thinking skills increased by 0.54 with the medium category. These results indicate that MOOS on microscopic concepts increases students creative thinking skills. Keywords: Massive Open Online Simulation (MOOS), Physics Concepts Microscopic, Creative Thinking Skills. Share Link | Plain Format | Corresponding Author (agus setyo budi)

1026	Physics	ABS-20
Ohm’s Law Method For Banana Peel Electrical Energy Harvesting Isnani Agriandita (a*), Yanasari (a), Destri Sofia Nur (a) a) Akademi Minyak dan Gas Balongan Indramayu Jalan Soekarno Hatta, Indramayu 45216, Indonesia *isnaniee[at]gmail.com Abstract Banana peel waste can be used for electrical current source. It is due to banana peel waste has various types of electrolytes, such as acetic acid (C2H4O2), magnesium (Mg), zinc (Zn), and potassium (K+) which are able to transmit ion (+) and ion (-) in electrodes. However, the use of banana peel waste as electrical energy has not been maximally utilized by the community. In this research was conducted several process in banana peel wastes become alternative electrical energy. There are four samples of various banana used in this research, they are green plantain, Palembang plantain, Muli, and Ambon. These four samples have the highest amount of consumption in community. The process of these samples become electrolyte paste were put into outworn battery with 1.5 volt as a replacement of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2) in it. The result of these research from the samples are obtained that green plantain has the highest voltage of 1.22 volt to 1.34 volt for one battery. 12 green plantain battery arranged in series produce a voltage around 12.07 volt and can be used to turn on LED light with 6 volt for four till five days. Keywords: Ohms Law; Banana peel waste; Voltage Share Link | Plain Format | Corresponding Author (Isnani Agriandita)

1027	Physics	ABS-537
Teaching High School Physics Using PhET Interactive Simulation Siswoyo* Physics Education, Faculty of Mathematics and Netural Sciences, Universitas Negeri Jakarta *siswoyo[at]unj.ac.id Abstract This study focus on students’ exploration of work and energy using PhET interactive simulation and involving 36 students in High School Physics class. Students were working in small group to explore virtual phenomena using PhET- the ramp and energy skate park. Worksheets were created by teacher to guide students in inquiry-based exploration of scientific phenomena. During the lesson students input the data, controlled related variables and interpreted the graphs. At the end of the lesson, some questions were administrated by teacher focus on students interpretation of graphs and pictures related to the concept of work and energy. It was found the students were interested to PhET interactive simulation and more active to ask questions during the lesson and students interpretation of graph better than before. Keywords: Physics; PhET Interactive Simulation; Interpretation of graph; Work and energy Share Link | Plain Format | Corresponding Author (Siswoyo .)

1028	Physics	ABS-283
Development Of Basic Physics I Practicum Worksheet With Science Writing Heuristic (SWH) Approach To Improve Science Process Skills Muhamad Ridhwan(a*), I Made Astra(b), Agus Setiyo Budi(b) (a) Postgraduate Program of Physics Education Department, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jl. Rawamangun Muka No 1. Jakarta Timur, Indonesia, 13220. *one.bale.endah[at]gmail.com (b)Physics Department, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jl. Rawamangun Muka No 1. Jakarta Timur, Indonesia, 13220. Abstract This study aims to develop a basic physics I practicum worksheet using the Science Writing Heuristic approach to improve science process skills in college students. In this study using the ADDIE model. The instruments in this study were the validation instrument and the written test. The results of the validation by the material experts were 82.97%, by the media experts were 77,71% and by the learning experts were 93.8% with the interpretation of the practicum worksheets very feasible to be implemented. The results of a small-scale field trial involving 6 students showed an average percentage value of 92.78% and the results of a large-scale trial with a sample of 30 students of Physics Education Study Program at FMIPA, Jakarta State University showed an average percentage of 93.80%. The results showed that the practicum worksheets is very feasible to implemented as a guide of Basic Physics I Practicum material. The N-Gain test results showed a score of <g> of 0.74 which means an increase in science process skills with high criteria. Based on the N-Gain test it can be concluded that the worksheet of basic physics I practicum using the Science Writing Heuristic approach can improve the science process skills Keywords: science writing heuristic, practicum worksheet, basic physics I, science process skills, ADDIE Share Link | Plain Format | Corresponding Author (MUHAMAD RIDHWAN)

1029	Physics	ABS-285
ENERGY EFFICIENCY ANALYSIS FOR VARIOUS TYPES OF ELECTRIC COOKER Siti Aisyah, Meiri Triani, Rasgianti PT. PLN (Persero) Abstract Efficiency is one of the important things to consider when choosing household appliances, especially cooking equipment. Currently the community is starting to switch from from liquefied petroleum gas-based cookers to electric cookers. Therefore analysis is needed to determine the selection of electric cookers that are efficient in accordance with consumer needs. To accomplish this study, testing with boiling water was carried out on three types of electric cookers namely induction cooker, halogen and electric coil. This test is carried out to obtain input and output energy from each stove so that efficiency can be obtained. From the test results, it has been found that the induction cooker has the highest efficiency among the electric cooker. Keywords: Induction Cooker, Energy, Efficiency Share Link | Plain Format | Corresponding Author (Siti Aisyah)

1030	Physics	ABS-34
EVALUATION OF KOH ACTIVATOR CONCENTRATION VARIATION ON THE PHYSICAL PROPERTIES OF SUPERCAPASITOR ELECTRODES FROM CARBON ACTIVATED OF COCOA PODS Yuli Yetri, Mursida, Dahyunir Dahlan, Muldarisnur Politeknik Negeri Padang Kampus Limau Manis, Padang Abstract The study of making activated carbon from the cocoa pods which will be used as supercapacitor electrodes has been successfully made with KOH activators of 0.3 M and 0.4 M at 7000C. Activated carbon electrodes are made by a combination of chemical activation and physical activation methods. Physical properties were tested by measuring the density, X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The technique of preparing carbon electrodes starts from pre-carbonization, milling, chemical activation, pellet making, carbonization, and physical activation. Analysis of dimensions, and density in the manufacture of carbon electrodes showed the mass, diameter, thickness and density of the electrodes decreased along with the addition of KOH concentration from 0.3 M to 0.4 M. XRD measurement data obtained values of 2θ in the range of 23,569o-24,747o for the reflection plane 002 and 44,634o-44,781o for the reflection plane 100. X-ray diffraction curve analysis shows that the sample 0.4 M 700oC has a smaller microcrystalline dimension (Lc) value and lattice distance than the 0.3 M 700oC sample, so it can be indicated that the surface area of the sample is 0.4 M 700oC greater than the 0.3M 700oC sample. With an increase in the surface area of the sample, there is an indication that the activated carbon of cocoa pods can be used as a supercapacitor electrode as a renewable energy source. Keywords: Physical properties, Cocoa pods, Activated Carbon, Electrodes, Supercapacitors Share Link | Plain Format | Corresponding Author (Yuli Yetri)

1031	Physics	ABS-37
Developing temperature and wind speed monitoring devices as a way to introduce IoT to students D Nasrudin, M R Sanjaya, W Setya, C Rochman, I Helsy, D Mulhayatiah and HY Suhendi UIN Sunan Gunung Djati Bandung Abstract Although the IoT application is already widely used by students, understanding the working principle of the device is not easy. This paper aims to describe the way to introduce IoT to students through the development of learning media based on Arduino Uno built-in Wifi on temperature and wind speed monitoring devices. The method used is Research and Development. The results showed a flow chart and design of tool development. Also presented are expert views on the visibility of developing tools and their usefulness as a medium for learning physics Keywords: Arduino Uno, IoT, Learning Media Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

1032	Physics	ABS-38
An Optical Instrument Worksheet in Physics Class Resy Fauziah Ratna Nurzaman (a), Endah Kurnia Yuningsih (b), Rena Denya Agustina (c), Rizki Zakwandi (d*), Yudi Dirgantara (e), Dedi Kuntadi (f) Physics Education Department UIN Sunan Gunung Djati, Bandung, Indonesia Abstract Optical instruments are one of the basic subjects in physics. The use of a very wide range of optical instruments in life creates a demanding environment so that students have adequate skills. This research aims to develop worksheets that can support student skills. The worksheet prepared in the form of a learning tutorial is expected to improve higher-order thinking skills. This study uses a 4D development model (Define, Design, Development, Dissemination) with the stages of implementation to Development. The results showed that there was a significant increase in students’ higher-order thinking skills. The student also stated that the worksheets developed had an attraction with a percentage of 79.6% for the implementation aspect, 74.2% for the language aspect, 82.1% for the design aspect, and 75.3% for the acceptance aspect Keywords: critical thinking, tutorial, student worksheet Share Link | Plain Format | Corresponding Author (Rizki Zakwandi)

1033	Physics	ABS-808
Radioactive Decay Model Based on Augmented Reality Fauzi Bakri, Dadan Sumardani, Dewi Muliyati Universitas Negeri Jakarta Abstract This article presents a simulation model of radioactive chain decay with augmented reality technology. Radioactive decay is classified as abstract material that is difficult to understand. This simulation will make abstract radioactive decay materials easily understood. In this article will explain the simulation changes to the 4N + 2 radioactive model by utilizing augmented reality technology. This media development uses the black-box testing method to test the accuracy and validity of the software program. Interactive media using augmented reality on radioactive decay have been able to display the U-238 chain decay model (series 4n+2) by simulating the process of alpha and beta release in each series. This simulation successfully displayed a striking difference between alpha and beta release in the U-238 chain reaction cycle. Keywords: AR, Decay, Radioactive, 4n+2, Uranium-238 Share Link | Plain Format | Corresponding Author (Dadan Sumardani)

1034	Physics	ABS-553
Automatic Detection of Atrial Fibrillation Using Spectrum Energy With Classified by Deep Learning CCN Types Adfal Afdala (a*), Nuryani Nuryani (b) a) Sulthan Thaha Saifuddin Islamic State University of Jambi, Indonesia *afdala[at]uinjambi.ac.id b) Sebelas Maret University, Surakarta, Indonesia Abstract Atrial fibrillation is a heartbeat disorder that is hard to be predicted, yet has a quite dangerous effect, i.e the increase of stroke risk to its sufferers. The increasing number of these illness victims causes the need for an automatic detection system that is able to detect the symptoms of this heartbeat disorder, one of them is by using deep learning techniques. The feature used of this research is a spectrum of energy that is produced by the patient’s electrocardiogram signal. This research stage is started from data retrieval from the patients, signal processing, energy spectrum feature extraction, until the classification stage. This research produces a system that can detect atrial fibrillation from the patient’s electrocardiogram signal. The level of accuracy produced by this research reaches 92,50%. This result can be classified as good because it can be confirmed that the detection system produced in this research is able to detect atrial fibrillation well. Keywords: Atrial Fibrillation, Deep Learning, Spectrum Energy Share Link | Plain Format | Corresponding Author (Adfal Afdala)

1035	Physics	ABS-809
Markerless Augmented Reality: Display Compton Scattering Model Fauzi Bakri, Dadan Sumardani, Dewi Muliyati Universitas Negeri Jakarta Abstract Simulations were performed using markerless augmented reality on the concept of compton scattering. Compton scattering identifies that photons can not only behave as waves but also behave like particles. The process of colliding photons with electrons causes scattering which shows that the photon has momentum. This article will explain a photon collision simulation to prove the state of light dualism by utilizing augmented reality technology. The development of this simulation was tested using the black-box testing method. Interactive media using augmented reality for compton scattering simulations can display the concept of collisions between photons and electrons. Our simulation successfully simulates the mechanism of energy release and momentum changes before and after the collision Keywords: AR, Black-Box Testing, Compton, Photon, Scattering. Share Link | Plain Format | Corresponding Author (Dadan Sumardani)

1036	Physics	ABS-822
A Sensitive Thick Film as a Candidate for Ethanol Gas Sensor from Jarosite-based Minerals Hasniah Aliah (1*), Dani Gustaman Syarif (2), Ryan Nur Iman (1), Asti Sawitri (3), Andhy Setiawan (4) 1) Department of Physics, Universitas Islam Negeri Sunan Gunung Djati Bandung, Jl. A.H. Nasution 105, Bandung 40614, Indonesia *hasniahaliah[at]uinsgd.ac.id 2) Center for Applied Nuclear Science and Technology, National Nuclear Agency, Jl. Taman Sari 71 Bandung 40132, Indonesia 3) Department of Physics, Halim Sanusi University, Jl. Laswi 1 Bandung 40271, Indonesia 4) Department of Physics, Universitas Pendidikan Indonesia, Jl. Dr Setiabudhi 229 Bandung 40154, Indonesia Abstract We report this study that aims to know thick film sensitivity to ethanol gas. The thick film was fabricated from local mineral, is Jarosite as a source of iron oxide and mixed with zinc oxide and Mangan oxide. The semiconductor mixture powder was synthesized by the sol-gel method, whereas the film was fabricated by a screen printing method. The film sensitivity was known with a gas sensing performance analyzer. An ethanol gas was adsorbed well by a thick film with different electrical resistance values. Due to the difference in the electrical resistance value, the thick film exhibited good sensitivity performance. The highest sensitivity was achieved approximately 91.7% among 4 gas concentration level of ethanol. In addition, the morphology of the thick film was examined by SEM that showed a pyramid-like form with a little polluter around them. The pyramid-like form looks like a spinel structure with a complex spinel-type where this structure is very well utilized for gas sensor device applications. Furthermore, these characteristics of the thick film indicated an opportunity that it can be a candidate for an ethanol gas sensor device. Keywords: Complex Spinel, Gas Sensor, Jarosite, Semiconductor, Thick Film. Share Link | Plain Format | Corresponding Author (Hasniah Aliah)

1037	Physics	ABS-1083
Physical rationality in social biopsychology stress coping strategies: a study of active college students Ambar Sulianti, Endi Endi, Anwar Supenawinata, Adang Hamballi, Muhammad Naufal Fadlurrahman Riyadhi UIN Sunan Gunung Djati Abstract In the era of the Industrial Revolution 4.0, where technology was no longer the exclusive right of engineers, transdisciplinary collaboration became wide open. The aim of this study is to present a systematic review from a physical point of view about the rationality of the stress coping strategy and linking it to social biopsychological mechanisms. Stress coping strategy is a way or individual behavior to solve a problem that makes that person stress. This research is a mix method using the type of Sequential Explanatory research. quantitative. Data were collected using coping stress and coping strategy questionnaire in 40 students who play an active role as an organization manager but have academic achievements. The results showed 80% of college students used a strategy approach to cope with stress. Meanwhile, a small portion of 20% college students using stress avoidance strategies. Student groups who use an approach strategy, solve their problems with problem focused coping. Meanwhile, groups that use stress avoidance strategies are divided into 2 groups: passive and divert stress in the form of emotions and non-emotions. In the law-physics analysis that illustrates the stress coping strategy used by these outstanding students is the law of Newton 1, 2, 3, and the law of energy conservation Keywords: coping strategies, physic, biopsychology, stress, college students Share Link | Plain Format | Corresponding Author (Ambar Sulianti)

1038	Physics	ABS-323
Enhancing Science Literacy Capabilities of Prospective Primary School Teachers Through the STEM Learning Model Project Amiruddin B, Agus Setyo Budi, & Mohamad Syarif Sumantri Universitas Negeri Jakarta, Indonesia Abstract The STEM Project is a learning model that can be used by lecturers in the learning process so that students can get used to analyzing and synthesizing, to come up with an idea that can develop the competence and science literacy abilities of elementary school teacher candidates in the framework of learning in the 21st century. The study aims to improve the ability of the science literacy of Pre-service elementary school teachers by using the STEM Project Learning Model. This study was conducted on Pre-service elementary school teachers as elementary school teacher education students at the University of Halu Oleo Kendari. The results obtained indicate that the science literacy ability of Pre-service elementary school teachers has increased significantly. The increase is based on the results of statistical analysis which shows a significant increase in the ability of the science literacy of Pre-service elementary school teachers, after participating in learning using the STEM Project model. For this reason, the use of the STEM Project model in learning science enables prospective teachers to become accustomed to conducting comprehensive analyzes of problems and their solutions Keywords: STEM Project Model, Science Literacy, Pre-service Elementary School Teachers Share Link | Plain Format | Corresponding Author (Amiruddin B B)

1039	Physics	ABS-327
Development of Encyclopedia Based on Project-Based Learning to enhance Science Literacy Capabilities of Physics Student of Universitas Negeri Jakarta A S Budi, D mulyati Universitas Negeri Jakarta Abstract This study aims to develop encyclopedias based on Project Based Learning to enhance Science Literacy Capabilities of Physics Student of Universitas Negeri Jakarta. The method that used in this research is Research and Development (R&D) with ADDIE model. The steps are analysis, design, development, implementation, and evaluation. This encyclopedia consists of introduction, concept development, application in real life, concept reinforcement, and evaluation. This encyclopedia has been validated by instructional methods experts, instructional media experts, and content experts. Overall, this encyclopedia is feasible to be used as a learning Keywords: Project Based Learning, Science Literacy, Encyclopedia Share Link | Plain Format | Corresponding Author (agus setyo budi)

1040	Physics	ABS-74
Physics: language, logic and literacy D Nasrudin, SN Muhtar, R N R P Dalimunthe, A Nandang, W Hidayat and A Kurnia UIN Sunan Gunung Djati Bandung Abstract Learning physics in Indonesia is very dependent on resources from the West (Western science) in English. Therefore, understanding English physics terminology is a necessity. This paper wants to describe the effort to understand physics through a language approach. The method used is Research and Development. The results showed a number of physics topics that need to be examined from the aspect of language as well as various strategies to teach them. Researchers concluded that the mastery of language and logic physics will make students more literate with physics. This study recommends the importance of English for Specific Purposes for physics education students. Keywords: CLIL, ESP, physics literacy, physical properties Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

1041	Physics	ABS-588
Application LTD Device to detect laminar and turbulance on plane wing prototype Riki Purnama Putra (a*), Rizki Hidayatulloh (a), Reginald Rasyid (a), Herni Yuniarti Suhendi (a), Rena Denya Agustina (a) a) Program Studi Pendidikan Fisika, UIN Sunan Gunung Djati, Jl. AH. Nasution No. 105, Bandung 40614, Indonesia *purnamariki20[at]gmail.com Abstract A turbulence oftenly occur during a plane’s flight especially on the wing’s part. This matter is influenced by several factors, for example the air density, altitude and air pressure. Furthermore, the wing’s shape will influence factors mentioned above. In this experiment we used different shaped plane wing prototypes that will be tested using LTD device. This experiment will indicate the air output whether it was laminar or turbulence. Moreover, we will look at how much the laminar and turbulence has on the effectiveness of the plane wing being tested. The purpose of this research is to know how much influence a plane wing’s shape has on the occured turbulence, furthermore identifying which wing causes the most minimum turbulence. We used 3 different plane wing model, which are A model, B model, and C model with each model has different extent of area. Our results indicate that the LTD device is able to show the turbulance difference on each plane wing model. Keywords: Turbulance; Laminar; Air Density; Altitude; Air Pressure; LTD Device; Wing Prototype Share Link | Plain Format | Corresponding Author (Riki Purnama Putra)

1042	Physics	ABS-605
Structural, magnetic and microwave absorption properties of natural iron sand Erfan Handoko(1*), Iwan Sugihartono(1), Mangasi Alion Marpaung(1), Setia Budi(2), Riser Fahdiran(1), Maulana Randa(3), Zulkarnain Jalil(4), and Mudrik Alaydrus(5) 1) Dept. of Physics, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia *erfan[at]unj.ac.id 2) Dept.of Chemistry, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia 3) Balitbang Kementerian Pertahanan Republik Indonesia, Jakarta, Indonesia 4) Dept. of Physics, Syiah Kuala University, Banda Aceh, Indonesia 5) Dept.of Electrical Engineering, Universitas Mercu Buana, Jalan Meruya Selatan No.1, Jakarta, Indonesia Abstract This paper present the development and characterization of the natural iron sand as a microwave absorber. In order to develop a new microwave absorbing paints in the 8.2–12.4 GHz range, the iron sand sample was prepared through mechanical milling process. The samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), Permagraph and vector network analyzer (VNA). The reflection loss (RL) was calculated and simulated for different thicknesses of the material using the complex permittivity and permeability and found the broadband characteristics with minimum absorption. The results indicated that these paints are very useful in military applications. Keywords: iron sand, microwave absorbing paints, reflection loss. Share Link | Plain Format | Corresponding Author (Erfan Handoko)

1043	Physics	ABS-606
Complex permeability, permittivity and microwave absorption ability of barium hexaferrite synthesized from natural iron sand Erfan Handoko(1*), Iwan Sugihartono(1), Mangasi Alion Marpaung(1), Setia Budi(2), Riser Fahdiran(1), Maulana Randa(3), Zulkarnain Jalil(4), and Mudrik Alaydrus(5) 1) Dept. of Physics, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia *erfan[at]unj.ac.id 2) Dept.of Chemistry, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia 3) Balitbang Kementerian Pertahanan Republik Indonesia, Jakarta, Indonesia 4) Dept. of Physics, Syiah Kuala University, Banda Aceh, 5) Dept.of Electrical Engineering, Universitas Mercu Buana, Jalan Meruya Selatan No.1, Jakarta, Indonesia Abstract In this paper, the barium hexaferrite was successfully prepared by a conventional ceramic method and the precursors of BaCO3 and natural iron sand from Puger Beach, Jawa Timur-Indonesia. In order to develop a microwave absorbing material, the complex permeability, permittivity, and microwave absorption ability were investigated using a vector network analyzer (VNA) system Keysight PNA-L N5232A in the frequency range of 8.2 - 12.4 GHz. The results showed that the reflection loss values calculated from measured complex permeability and permittivity and exhibits optimum microwave absorption ability of barium hexaferrite. Keywords: Barium ferrite, natural iron sand, reflection loss, microwave absorption ability Share Link | Plain Format | Corresponding Author (Erfan Handoko)

1044	Physics	ABS-620
Development of learning material in the form of smartphone application on the subject of temperature and heat by inquiry-based learning for physics high school subject Hadi Nasbey, Raihanati, I Made Astra, Aulia Rahma Department of physics, Universitas Negeri Jakarta, Jl. Rawamangun muka, Jakarta, Indonesia. Abstract An smartphone application which are used as learning material on the subject of temperature and heat have been developed. The development process is carried out using research and development methods with reference to the Analysis-Design-Development-Development-Implementation-Evaluation development model. The novelty of learning material that was developed was to use inquiry-based learning in the writing system. In addition, the learning material which developed also includes questions that refer to higher-order thinking. The results of the validity tests show the adequacy of the learning materials with the level of difficulty of the learning materials in high school. The learning material has been tested in SMA 16 Jakarta. The test results show an increase in learning outcomes shown by the gain score of 0.4. Keywords: inquiry based learning, learning material Share Link | Plain Format | Corresponding Author (Hadi Nasbey)

1045	Physics	ABS-879
Analysis of student’s understanding of kinematics concept Akhmad Jufriadi (a*) (b), Hena Dian Ayu (a), Sutopo (b), Sentot Kusairi (b) a) Physics education study program, Universitas Kanjuruhan Malang Jl. S.Supriadi No. 48, Malang 65148, Indonesia *akhmadjufriadi[at]unikama.ac.id b) Physics education program, State University of Malang, Malang, Indonesia Abstract This research explains a study of the students understanding of the kinematics concept, that is the concept of displacement and distance, the concepts of speed and velocity, and acceleration. This research involved 21 new students registered in the odd semester of the 2019-2020 Physics Education Program at Universitas Kanjuruhan Malang and would take a fundamental physics course 1. With a mixed-method research design, the ability to understand the concepts of physics are assessed from the ability of students to respond to the tests are given and the arguments of students who are put forward through written answers or during short interviews individually. the result analysis of the students understanding of the kinematics concept shows that about 19% of new students 2019-2020 understanding of displacement and distance concept, about 14% understanding speed and velocity, and about 10% understanding about the direction of acceleration. Keywords: kinematics; students understanding Share Link | Plain Format | Corresponding Author (Akhmad Jufriadi)

1046	Physics	ABS-1140
Views and practices of mathematical method for physics lecture at pre-service physics teachers Sujito1,2*, H.Y. Pratiwi3, E. Soewono4, A. Suhandi1, and Liliasari S1 1Program Studi Pendidikan Ilmu Pengetahuan Alam, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia. 2Jurusan Fisika, FMIPA, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65141, Indonesia. 3Fakultas Sains dan Teknologi, Universitas Kanjuruhan Malang, Jl. S Supriyadi No. 48, Malang 65148, Indonesia 4Fakultas Matematika, Institut Teknologi Bandung, Jl. Ganesa No. 10 Bandung, 40132, Indonesia Abstract The aim of study is to describe the lecture process of Mathematical Method for Physics. The model is to develop the concept and ability of mathematical logical thinking of students of Physics Education Study Program. Mathematical Method for Physics is used to study physics related to how to systematically find out about nature. The research subjects consisted of 2 lecturers, and students who had taken Mathematical Method for Physics Courses, namely levels 3 and 4. The number of students filling out questionnaires was 94 students. Observations were conducted in class. Observations are focused on the learning process in the class. Data was collected using questionnaires to get student responses to the implementation of lectures. The results of the study were as many as 57.82%. of students gave positive statements about the implementation of lectures, while the rest gave negative statements. This shows that studying physics is not only mastery of a collection of knowledge in the form of facts, concepts, or principles, but also an inquiry process. Therefore, the challenge in facing the 21st century is to improve the quality of education. Learning innovation is adjusted to the demands of educational change in the era of industrial revolution 4.0 (millennial). Learning must utilize information, communication, and technology (ICT). Innovation requires the support of a learning process that can strengthen creativity through critical thinking skills. Keywords: physics; pre-service Share Link | Plain Format | Corresponding Author (Hestiningtyas Yuli Pratiwi)

1047	Physics	ABS-117
Eichhornia crassipes as handicraft materials and energy sources: a review of physics D Nasrudin, M Fauziah, K Nisa, C Rochman, D Mulhayatiah, and HY Suhendi UIN Sunan Gunung Djati Bandung Abstract The existence of Eichhornia crassipes plants is often regarded as a weed that can damage the aquatic environment. However, at this time Eichhornia crassipes can be made into handicraft materials and briquettes. This paper wants to reveal the physical concepts that exist in the process of making handicrafts and briquettes made from Eichhornia crassipes. This research is a field study using the method of observation, interviews, and reinforced with literature studies. The results showed several physical concepts that can be revealed in the process of making handicrafts and briquettes made from Eichhornia crassipes such as temperature, heat radiation, pressure, etc. The process of making handicrafts and briquettes from Eichhornia crassipes can be used as a source of contextual physics learning or development of physics enrichment materials. Keywords: briquettes, Eichhornia crassipes, handicraft Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

1048	Physics	ABS-374
Diagnostic Analysis of Student Concept in Environmental Physics Hena Dian Ayu (a*)(b), Sulistyo Saputra(b), Sarwanto sarwanto(b), Sri Mulyani(b) a) Universitas Kanjuruhan Malang Jl. S.Supriadi 48, Malang, 65148, Indonesia *henadian[at]student.uns.ac.id *henadian[at]unikama.ac.id b) Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No.36 A, Surakarta, 57126, Indonesia Abstract The focus of this research is diagnose students concepts in environmental physics courses. This study uses a mixed-method. Data is obtained from interviews, observations, questionnaires, and test. The subjects of this research are 78 physics education students who have passed environmental physics courses, and 4 lecturers. The results showed that the chapter in bad category was the chapter "external factors that affect life on earth". This answers with the percentage of students who answered correctly you are 44,84. As well as the chapter "The association of physical principles with soil characteristics" also on the bad category with a percentage of 36,48. While the chapter that good categories are the chapter "the role of vegetation and carbon balance" and "Opening Environmental Issues". This number has a percentage of more than 79,4 and 77,96. Keywords: diagnostic, students concepts,environmental physics Share Link | Plain Format | Corresponding Author (Hena Dian Ayu)

1049	Physics	ABS-119
How does a gas power plant work? Students views on the concept of physics C Rochman, D Nasrudin, AR Juwita, M F Millah, D Mulhayatiah and HY Suhendi UIN Sunan Gunung Djati Bandung Abstract The electricity we use comes from generators. Not everyone understands how electricity is generated and how it can flow into homes. This paper wants to reveal the concepts and phenomena of physics in a gas power plants and how the level of student literacy is about it. This research is a field study using observational methods, surveys, and literature studies. The results showed: (1) physical concepts that exist in gas power plants include: fluid, energy, heat, electricity, and magnetism (2) Student literacy related to the working principles of gas power plants is still low. This study recommends the importance of efforts to increase student literacy through learning contextual physics. Keywords: Contextual physics, Gas Power Plant, Literacy Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

1050	Physics	ABS-127
Analysis of Winding on Radiation-Electromagnetic Field on the Tesla Coil Diah Mulhayatiah, Yusup Setiawan, Muhamad Ferdinan R, Sonia Dwi Nurdini, Herni Yuniarti Suhendi, and Dindin Nasrudin UIN Sunan Gunung Djati Abstract Technology is increasingly developing, this is evidenced by the existence of a new technological invention that is wireless electricity. The charging on android phones certainly uses the Tesla coil concept. The Tesla coil can emit electromagnetic radiation which depends on its input. This study aims to design a miniature tesla coil as a magnetic inductor. It is compares the frequency and electromagnetic radiation with a coil diameter of 0.3 mm, 0.4 mm and 0.5 mm with the same number of turns, 500 turns. The method used is an experimental method using determinants such as the diameter of the coil, the height of the measurement of electromagnetic radiation, and the distance measurement of electromagnetic radiation. Measurement using an oscilloscope to determine the frequency and to measure electromagnetic radiation researchers used an electromagnetic radiation detector DT-1130. The measurements of electromagnetic, show that electromagnetic radiation which has the largest value is at the top. For the distance, the further measurement between the electromagnetic sensor with the Tesla coil the electromagnetic radiation is getting weaker. At a winding diameter of 0.3 mm which produces the smallest radiation but when brought close to the LED the light intensity of the LED lights gets brighter compared to the diameter of the winding 0.5 mm which has the most radiation Keywords: diameter, radiation, tesla coil Share Link | Plain Format | Corresponding Author (Diah Mulhayatiah)

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