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Measurement Eccentricity the Moonâ€™s Orbit with Image Analysis Technique by Using Tracker Software Tanzilla, Ricka; Jauhari, Ishafit; Pramudya, Yudhiakto
Indonesian Review of Physics (IRiP) Vol 1, No 1 (2018)
Publisher : Universitas Ahmad Dahlan

One of the interesting physical phenomenon to be studied isÂ about eccentricity of the Moon's orbit on the movement of the Earth and the Moon as explained in Kepler's Law. In order to explain the phenomenon,several research has been done to determine the measurement accuracy of Moon disk diameter using Trackers and to know the result of the eccentricity value in the application of Kepler's Law. This research can produce eccentricity values accordance with the application of Keplerâ€™sLaw. The research method used is Image Analysis Techniqueassisted with Tracker. The result of this research shows that the eccentricity value obtained is 0.07 Â± 0.01. This is in accordance with Kepler's first Law which stated that orbits of each planet and satellite is an ellipse and has an eccentricity value of 0 <e <1. The value of eccentricity obtained has accuracy of 22%,if it compared with the actual value.Whereas, if it compared with the value of ephemeris then the value of accuracy is 8%.

The Content Analysis of Bisphenol A (BPA) on Water in Plastic Glass with Varying Temperatures and Contact Times using UV-VIS Spectrophotometer Nugroho, Bayu; Pramudya, Yudhiakto; Widodo, Widodo
Indonesian Review of Physics (IRiP) Vol 1, No 2 (2018)
Publisher : Universitas Ahmad Dahlan

This study aims toÂ analyzeÂ the content of Bisphenol A (BPA) on variousÂ temperatureandcontact timesbetween the plastic bag and water.Â For analysis of BPA, a sample made with variations of temperature (Â± 70Â°C, Â± 80Â°C, Â± 90Â°C) and contacttime(5 minutes, 10 minutes, 15 minutes)Â usingnine samples. To determine the concentration of BPA, Lambert-Beer lawÂ was employed.According to the analysis of data, the content of BPA on the temperature variation showed that the higher the temperature of the sample, the higher the content of Bisphenol A in the sample. The content of BPA with a variation of contact times stated that with the longer contact time, the higher the content of BPA.

An Experiment Design for Determining the Volume of Traditional Eucalyptus Oil with Variations in Fluid Flow Speed Siregar, Nur Hamida; Toifur, Moh.; Pramudya, Yudhiakto
Indonesian Review of Physics (IRiP) Vol 2, No 1 (2019)
Publisher : Universitas Ahmad Dahlan

This study aimed to determine the volume of traditional eucalyptus oil from distillation with variations in fluid flow velocity. The method of distillation was distillation with water (water distillation). The material was eucalyptus leaves. To determine the volume of eucalyptus oil produced by distillation, the distillation device was set at the height of the condenser to the source of flow fluid, which was at an altitude of 15 cm, 25 cm, 35 cm, 45 cm, and 55 cm. Variation in the height of the condenser would affect the fluid flow rate. The faster the fluid flow rate, the greater the convection coefficient so that it increased the heat transfer rate. This results in greater volume (capacity) of oil produced. From these experimental results, most volumes of eucalyptus oil obtained from the distillation was obtained at 55 cm of the height of condenser with 3.6 mLof oil volume.

Development of Interactive Physics E-Module Using the SETS (Science, Environment, Technology, Society) Approach to Improve Science Literacy Dimension of Content and Process Dimensions in Fluid Dynamics Material Syafutri, Eka; Widodo, Widodo; Pramudya, Yudhiakto
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.v3i1.1691

This development research produces interactive physic electronic products using the interactive physics SETS approach (Science, Environment, Technology and Society) in terms of presenting the components of illustration, language, and the suitability of the material. The validity results of the electronic module carried by experts and teachers develeop the average yield of 96.36% so it is feasible to use. The study design is pretest-posttest control group to see the improvement ofÂ literacy dimension process. Subject of the study consisted of two groups: the experimental group and the control group. The data collection formed by science literacy of dimension content and process is analyzed using MANOVA with significance level of 5%. The results showed that the electronic module using SETS approach significantly influence the improvement of science literacy dimension content and process.

Measurement Eccentricity the Moonâ€™s Orbit with Image Analysis Technique by Using Tracker Software Ricka Tanzilla; Ishafit Jauhari; Yudhiakto Pramudya
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.258

One of the interesting physical phenomenon to be studied isÂ about eccentricity of the Moon's orbit on the movement of the Earth and the Moon as explained in Kepler's Law. In order to explain the phenomenon,several research has been done to determine the measurement accuracy of Moon disk diameter using Trackers and to know the result of the eccentricity value in the application of Kepler's Law. This research can produce eccentricity values accordance with the application of Keplerâ€™sLaw. The research method used is Image Analysis Techniqueassisted with Tracker. The result of this research shows that the eccentricity value obtained is 0.07 Â± 0.01. This is in accordance with Kepler's first Law which stated that orbits of each planet and satellite is an ellipse and has an eccentricity value of 0 <e <1. The value of eccentricity obtained has accuracy of 22%,if it compared with the actual value.Whereas, if it compared with the value of ephemeris then the value of accuracy is 8%.

The Content Analysis of Bisphenol A (BPA) on Water in Plastic Glass with Varying Temperatures and Contact Times using UV-VIS Spectrophotometer Bayu Nugroho; Yudhiakto Pramudya; Widodo Widodo
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.v1i2.263

This study aims toÂ analyzeÂ the content of Bisphenol A (BPA) on variousÂ temperatureandcontact timesbetween the plastic bag and water.Â For analysis of BPA, a sample made with variations of temperature (Â± 70Â°C, Â± 80Â°C, Â± 90Â°C) and contacttime(5 minutes, 10 minutes, 15 minutes)Â usingnine samples. To determine the concentration of BPA, Lambert-Beer lawÂ was employed.According to the analysis of data, the content of BPA on the temperature variation showed that the higher the temperature of the sample, the higher the content of Bisphenol A in the sample. The content of BPA with a variation of contact times stated that with the longer contact time, the higher the content of BPA.

An Experiment Design for Determining the Volume of Traditional Eucalyptus Oil with Variations in Fluid Flow Speed Nur Hamida Siregar; Moh. Toifur; Yudhiakto Pramudya
Indonesian Review of Physics (IRiP) Vol. 2 No. 1 (2019)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v2i1.909

This study aimed to determine the volume of traditional eucalyptus oil from distillation with variations in fluid flow velocity. The method of distillation was distillation with water (water distillation). The material was eucalyptus leaves. To determine the volume of eucalyptus oil produced by distillation, the distillation device was set at the height of the condenser to the source of flow fluid, which was at an altitude of 15 cm, 25 cm, 35 cm, 45 cm, and 55 cm. Variation in the height of the condenser would affect the fluid flow rate. The faster the fluid flow rate, the greater the convection coefficient so that it increased the heat transfer rate. This results in greater volume (capacity) of oil produced. From these experimental results, most volumes of eucalyptus oil obtained from the distillation was obtained at 55 cm of the height of condenser with 3.6 mLof oil volume.

Development of Interactive Physics E-Module Using the SETS (Science, Environment, Technology, Society) Approach to Improve Science Literacy Dimension of Content and Process Dimensions in Fluid Dynamics Material Eka Syafutri; Widodo Widodo; Yudhiakto Pramudya
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.v3i1.1691

This development research produces interactive physic electronic products using the interactive physics SETS approach (Science, Environment, Technology and Society) in terms of presenting the components of illustration, language, and the suitability of the material. The validity results of the electronic module carried by experts and teachers develeop the average yield of 96.36% so it is feasible to use. The study design is pretest-posttest control group to see the improvement ofÂ literacy dimension process. Subject of the study consisted of two groups: the experimental group and the control group. The data collection formed by science literacy of dimension content and process is analyzed using MANOVA with significance level of 5%. The results showed that the electronic module using SETS approach significantly influence the improvement of science literacy dimension content and process.

Estimation of Flores Sea Aftershock Rupture Data Based on AI Adi Jufriansah; Azmi Khusnani; Yudhiakto Pramudya; Mulya Afriyanto
Indonesian Review of Physics Vol. 6 No. 1 (2023)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v6i1.6705

The earthquake catalog notes that there have been earthquakes with Mw > 7 that hit the Flores area, three of which occurred in the Flores Sea in 1992, 2015, and 2021. Revealed that the seismic activity of Eastern Indonesia is thought to be influenced by the isolated thrust fault segment of the island of Flores and the island of Wetar. The study of the rising fault segment on Flores Island and Wetar Island helps in further understanding the fault behavior, earthquake pattern, and seismic risk in the Flores Sea region. In earthquakes with giant magneto, an aftershock can occur due to the interaction of ground movements. This research analyzes and compares the data from the evaluation of the classification algorithm and the regression algorithm. The initial stages of this research include requesting IRIS DMC Web Service data. The data is then subjected to a cleaning process to obtain the expected feature extraction. The next stage is to perform the clustering process. This stage is carried out to label dependent data by adding new features as data clusters. The following procedure divides the validation value, which consists of training and test data. The estimation results show that the classification algorithm's evaluation value is better than that of the regression algorithm. The evaluation value of several algorithms indicates this, with an accuracy rate between 80% and 100%.

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