Simulasi Difraksi Fraunhofer Menggunakan Media Spreadsheet dan GNU Octave Sebagai Alternatif Pembelajaran dimasa Pandemi

The title of this paper is Fraunhofer diffraction simulation using spreadsheet and GNU octave media as an alternative for learning during the pandemic. This paper aims to present an alternative to distance learning during the COVID-19 pandemic by using simulations using spreadsheets and GNU Octave media. Optical practicum in physics laboratories can not be done during pandemics. So the solution that can be offered is to use simulations on optical subjects of diffraction material. In the simulation making activities students can learn and explore about the phenomenon of diffraction. Simulations using the equations used in the research of Zhang et al. in 2013. This simulation is used to visualize the effect of variations in different parameters such as wavelengths and gap widths in Fraunhofer diffraction patterns. This paper has successfully simulated Fraunhofer's diffraction using spreadsheets as well as GNU Octave. This distance learning allows students to develop fraunhofer computational computational skills and conceptual understanding of diffraction

Komparasi Pembelajaran Ilmu Pengetahuan Alam (IPA) menggunakan Multimedia Interaktif Model Drils dan Media Komik Sains Terhadap Prestasi Belajar

This study aims to determine the differences in student achievement who are taught using interactive multimedia drills model with students who are taught using science comic media. This type of research is experimental research. The population in this study is all students of class VII MTs. The State of Selong Model and the sampling was determined by using cluster random sampling technique to select the class and simple random sampling to select the students in that class. The second sampling technique is random sampling by drawing lots, cluster random sampling, namely the class is divided into experimental class I, namely the class that is taught using interactive multimedia drills model (class VII-E) and the experimental class II, namely the class that is taught using comic media. science (class VII-F), each of which consists of 36 students. And simple random sampling, where students are drawn after data collection to reduce the sample to 30 students to facilitate hypothesis testing. The data collection technique used post-test while the data analysis technique to test the hypothesis was the t-test. The results of data analysis using t-test showed that there were differences in student achievement who were taught using interactive multimedia drills model with students who were taught using science comic media. This can be seen in the post-test results where t-count > t-table is 2.206 > 2.002. Thus H0 is rejected and Ha is accepted. This means that there are differences in student achievement who are taught using interactive multimedia drills model with students who are taught using science comics

Analisis Korosifitas Baja Ringan dengan Metoda Laser Induced Breakdown Spectroscopy (LIBS)

Method has been carried out. Research is done on mild steel zincalume type with immersion treatment (NaCl 3.5%) for 10 days, and 30 days and without immersion. Mild steel is laser irradiated (Nd-YAG 1064 nm, 7 ns) with energy of 120 mJ, and the data is taken with an accumulation of 3, delay time of 0.5 µs. Elements identification is done by taking data from up to 75 μm from the surface. The results of the analysis with LIBS showed immersion for 10 days, the corrosion rate and hardness of mild steel increased with 30 days immersion. The increase in the corrosion rate of mild steel is indicated by decreasing the value of dissolved oxygen intensity, the electrochemical reaction is fast. The decrease in the corrosion rate is indicated by the increase in the intensity value of Zn and Al elements associated with the formation of a passive film on the metal surface as a protective layer to protect further corrosion attacks.

Penerapan Model Pembelajaran Probing Prompting pada Pembelajaran IPA di SMP 3 Selong

The study, entitled "Application of the Probing Prompting Learning Model in Science Lessons at SMPN 3 Selong" aims to determine the influence of students in understanding the concept of learning science in the classroom. The research subjects were students of class VIII at SMPN 3 Selong, namely class VIII D and class VIII E, with the data retrieval process using a written test of 6 items of description. The average value obtained in the control class is 63.48 while the experimental class is 80.48 with a difference of 17 points. For the hypothesis value thitung = 2.042 while ttabel = 1.079 from the results of the calculation of the hypothesis test results of learning science students obtained thitung> ttabel =, then the hypothesis alternative (Ha) is accepted. So it can be concluded that there is an influence in the application of the probing prompting learning model in science learning at SMP 3 Selong

Simulasi Difraksi Fraunhofer Menggunakan Media Spreadsheet dan GNU Octave Sebagai Alternatif Pembelajaran dimasa Pandemi

It has been designed the water surface level detection system based on the ultrasonic sensor HC-SR04 and the ESP8266-12E module through telegram and buzzer communication media.. The research aims to design a water surface-level detection system by using ultrasonic sensors and the ESP8266- 12E module. The tools and materials used during the design are: Ultrasonic sensors HC-SR04, module ESP8266-12E, and buzzer as an output to sound the alarm. The ultrasonic HC-SR04 sensor will detect the water surface level, the detection data will be sent to the ESP8266-12E module, then the system will send the information in the form of a message through telegram and buzzer application. The messages delivered are several stages including standby, alert, and danger. The methods used in this design are planning, study libraries, collection of tools and materials, hardware plan, and program creation on the software. The final result is a system capable of detecting water surface level based on the ultrasonic sensor HC-SR04 and the ESP8266-12E module through telegram and buzzer communication media. The success rate of this tool system at several stages among others at a standby of 77%, at a level of alert of 70%, and the level of success at the hazard level is 83%.

Penentuan Karakteristik Mekanisme Gempa Tahun 2018-2019 Di Nusa Tenggara Menggunakan Metode Inversi Momen Tensor

Nusa Tenggara is one of the areas with a high level of seismic activity in Indonesia because this area is located between the Indian Ocean plate, which moves northward and pushes the Eurasian plate. One method that is often used to determine an earthquake's epicentre is the Tensor Moment Inversion method. This study aims to determine the moment tensor magnitude of each earthquake event and determine earthquake characteristics based on the earthquake focus mechanism in Nusa Tenggara from 2018 to 2019. The earthquake with a magnitude of ≥ 5.7 SR and to find out the fault parameters, namely strike, dip, and rake using waveform data. One method that is often used to determine an earthquake's epicentre is the Tensor Moment Inversion method. The results showed that the fault planes formed were reverse faults and oblique faults. It has been calculated the moment tensor for each of the six components, namely Mxx, Myy, Mzz, Mxy, Myz and Mxz. From the results of the focal analysis of the 2018-2019 Nusa Tenggara earthquake mechanism, the values of the fault plane orientation parameters such as strike, dip and rake are obtained. For strikes in Nusa Tenggara on area 1, namely: 73° to 122°, Dip: 20° to 72° and Rake: 53° to 139°. While in field 2 for a strike, it is 232° to 280°, Dip 28° to 75°, Rake: 52° to 102°.

Pengaruh Strategi Pembelajaran dan Motivasi Berprestasi Terhadap Hasil Belajar Siswa SMA

This study aims to determine; (1) The difference between the physics learning outcomes of high school students who were taught using inquiry strategies and those taught with group investigation, (2) The effect of the interaction between learning strategies and achievement motivation on learning outcomes of high school students, (3) Differences in learning outcomes of high school students who have motivation High achievers were taught with inquiry strategy with students who were taught by group investigation., (4) Differences in physics learning outcomes of high school students with low achievement motivation were taught using inquiry strategy with students who were taught with group investigation (1) There were differences in physics learning outcomes for high school students those who were taught with inquiry strategies with students who were taught with group investigation., (2) There was an interaction effect between learning strategies and achievement motivation on the learning outcomes of high school students., (3) There were differences in physics learning outcomes for high school students with high achievement motivation to be studied. show with the Inquiry strategy with students who were taught with group investigation., (4) There was no difference in the results of studying physics for high school students who had low achievement motivation learned by inquiry strategy with students who were taught with group investigation.

Kajian Sifat Fisika-Kimia Air Bahang dan Indeks Pencemaran di Perairan PLTU Sumbawa Barat

This research examines the physical and chemical properties of the potential contamination of condenser cooling water (heat water) at the 2x7 MW West Sumbawa Steam Power Plant. Method’s this research is direct observation in the field. The determination of the sample point was done by purposive sampling. The results showed that the hot water had met the predetermined quality standards, namely a pH of 8.21, a temperature of 38.50C and a content of free chlorine (Cl2) of 0.03 mg / L. There was an increase in sea water temperature in a radius of 17 meters east and west by 80C from 280C to 360C. Direct discharge of hot water has the potential to pollute the marine prawn environment around the 2x7 MW West Sumbawa PLTU. From the results of the study, it was found that the temperature of the hot water had met the specified quality standard, which was 40oC, but direct disposal caused the sea water temperature to rise, exceeding the set sea water temperature quality standard of 320C and the temperature increase should not be more than 20C from the temperature. at first. The status of sea water quality due to the entry of hot water is determined using a pollution index. From the calculation results obtained PIj of 1.125 at the sample point Outfall 2, meaning that the sea water conditions at a radius of 17 meters are lightly polluted. As a form of control and prevention of pollution due to the entry of high temperature hot water, continuous monitoring is necessary and it is necessary to create a mixing pool between sea water and hot water before the heat is discharged into the sea.

Pemanfaatan Media Virtual Reality Berbasis Kearifan Lokal Melalui Alat Musik SAMPE Untuk Meningkatkan Kemampuan Berpikir Kritis

The demand for implementing industrial revolution education 4.0 is the use of information technology in the learning process. Virtual Reality (VR) media in learning is one of the uses of technology in its implementation. Utilization of VR media must also be accompanied by including the role of local wisdom by using musical instruments sampe. It is hoped that through learning using VR media based on local wisdom it can improve students' critical thinking skills. This study aims to improve critical thinking skills and instill the value of local wisdom in students. The method used in this research is an experimental method with the form of pre-experimental research design and one-group pretest-posttest design research design. Samples were selected using probability sampling techniques. The research sample was the second semester students of the Physics Education Study Program of IKIP PGRI Pontianak. The instrument used was a critical thinking skills test and a questionnaire. This study obtained qualitative and quantitative data, where quantitative data were analyzed using statistical analysis t test to see the increase in students' critical thinking skills. Based on the analysis of the results of the critical thinking test, it was concluded that there was an increase in students' critical thinking skills using VR media based on local wisdom, this is because VR media provides students with direct experience in seeing the concept of vibrations and sound waves through 3D animated visualization of musical instruments until.

Metode Think-Pair-Share Dengan Analisis Artikel Untuk Meningkatkan Keterampilan Berpikir Tingkat Tinggi Mahasiswa

The purpose of this study was to describe the application of the think-pair-share method with article analysis to improve students' higher order thinking skills. This type of research is pre-experimental with research subjects, namely students who take the Physics Learning Strategy course, academic year 2020/2021, at one of the universities in Mataram, totaling 27 people. The research design used was One Group Pre-test and Post-test Design. The instrument used in this study was a test of higher order thinking skills. The level of higher order thinking skills of students is calculated as a percentage, with 5 categories. The increase in score is calculated using N-gain, with 3 criteria. The results showed that the level of high-order thinking skills of students at the pre-test was 49 with a very low category, while at the time of the post-test it was 83 in the good category. The N-gain score is 68 with moderate criteria. Thus, the application of the think-pair-share method with article analysis can improve students' higher-order thinking skills in the Physics Learning Strategy course.