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Physics Communication
Published by Universitas Negeri Semarang
ISSN : 25285971     EISSN : 2528598X     DOI : https://doi.org/10.15294/physcomm
Core Subject : Science,
Physics
Physics Communication is devoted to reporting important new developments in the area of physics. Papers cover the fields of: atomic and molecular physics condensed matter and theory of statistical physics nuclear theory fluid theory and plasmas elementary particle physics and quantum field theory quantum mechanics and quantum optics theoretical astrophysics cosmology relativity Certain new interdisciplinary subjects such as theoretical biophysics, mathematical physics and computational physics are also incorporated.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 168 Documents
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Deskripsi Kemampuan Representasi Matematik dalam Pemecahan Masalah Fisika pada Perkuliahan Listrik Magnet
Physics Communication Vol 2, No 1 (2018): February 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v2i1.10686

Abstract

Kemampuan representasi matematis dalam memecahkan masalah listrik magnet, mahasiswa akan mengungkapkan karakteristik listrik magnet. Topik listrik magnet tergolong konsep yang abstrak dan teoritis berupa matematis. Penelitian ini bertujuan untuk mendeskripsikan kemampuan representasi matematik mahasiswa dalam memecahkan masalah fisika pada perkuliahan listrik magnet. Metode penelitian yang digunakan yaitu metode deskripsi kualitatif. Subjek penelitian ini adalah mahasiswa semester IV Program Studi Pendidikan Fisika UNNES. Pengumpulan data dilakukan dengan memberikan soal pada mahasiswa yang sebelumnya telah mendapatkan materi garis medan dan hukum Gauss pada mata kuliah listrik magnet. Hasil analisis data berdasarkan langkah-langkah hasil pekerjaan mahasiswa menunjukkan bahwa kemampuan representasi matematik dalam memecahkan masalah fisika pada perkuliahan listrik magnet pada kategori tinggi dengan jumlah paling sedikit yaitu sebesar 9%, selanjutnya kategori sedang dengan jumlah mahasiswa paling banyak yaitu sebesar 75%, dan kategori rendah yaitu sebesar 16%.
Enhancing Independence and Learning Motivation by Using Youtube
Physics Communication Vol 3, No 2 (2019): August 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v0i0.20629

Abstract

Independence is the ability to stand alone, work and carry out activities well, the students' independence often appears including cheating, copying their friends work and much more. Motivation is a basic impulse that moves students to do something, this motivation is related to student involvement in activities in the classroom, such as the urge to do something based on certain goals. This research is an effort to improve student independence and motivation through the use of youtube videos. The result of data analysis shows that the use of youtube videos can increase independence, motivation to learn, physics learning outcomes and the ability to use measuring instruments in tenth grade of mechanical engineering, SMK Nusantara 1 Comal. The use of learning models with the help of Youtube videos can enable students to work on assigments which further can ultimately improve their learning outcomes.
Identifikasi Kesulitan Belajar Fisika Berdasarkan Kemampuan Multi Representasi
Physics Communication Vol 1, No 2 (2017): August 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v1i2.10404

Abstract

Multi representasi dapat digunakan untuk mengetahui tingkat pemahaman yang dimiliki oleh mahasiswa. Identifikasi pola kesulitan belajar fisika berdasarkan kemampuan multi representasi terhadap pemecahan masalah telah dilakukan melalui metode kualitatif model grounded theory, dan dilaksanakan pada mahasiswa pendidikan Fisika Unnes Tahun akademik 2016/2017. Bentuk multi representasi yang digunakan adalah verbal (V), gambar/diagram (D), grafik (G), dan matematis (M). Kemampuan multi representasi mahasiswa kategori tinggi, sedang dan rendah memiliki kecenderungan representasi matematis (M) secara berurutan sebesar 67,85%, 79,92%, dan 75%. Mahasiswa kategori tinggi memiliki pola kesulitan belajar fisika yaitu, merencanakan solusi (memahami bahasa soal dan menentukan tahap  penyelesaian) serta melaksanakan rencana solusi (menentukan persamaan), mahasiswa kategori sedang memiliki pola kesulitan belajar merencanakan solusi (memahami bahasa soal dan menentukan solusi), melaksanakan rencana solusi (proyeksi gaya, menentukan komponen gaya yang bekerja pada benda, menentukan persamaan, pengaplikasian, perhitungan), dan mahasiswa kategori rendah yaitu merencanakan solusi (memahami bahasa soal), melaksanakan rencana solusi (menentukan persamaan, membedakan simbol-simbol fisika, pengaplikasian persamaan, dan perhitungan) serta tidak melakukan pengecekan dan evaluasi.
Pola pemecahan masalah berdasarkan representasi siswa dalam membangun pemahaman konsep fisika
Physics Communication Vol 1, No 1 (2017): February 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v1i1.8947

Abstract

Representasi dalam memecahkan masalah memberikan informasi cara siswa memahami konsep. Siswa memiliki pola beragam untuk memecahkan masalah yang berkaitan dengan konsep Fisika. Penelitian ini bertujuan mengidentifikasi: kecenderungan representasi siswa, pola pemecahan masalah berdasarkan kecenderungan representasi, pola pemecahan masalah dalam membangun pemahaman konsep. Penelitian ini adalah penelitian kualitatif model grounded theory . Siswa dikategorikan pemahamannya ke dalam kategori tinggi, sedang dan rendah. Hasil penelitian menunjukkan siswa kategori tinggi memiliki kecenderungan representasi simbolik, kategori sedang dan rendah memiliki kecenderungan representasi visual gambar. Siswa kecenderungan representasi simbolik memiliki pola yaitu membaca, menganalisis, merencanakan solusi, melaksanakan, menyimpulkan. Siswa kecenderungan visual gambar memiliki dua pola. Pola pertama yaitu membaca, memahami masalah, menganalisis, melaksanakan dan menyimpulkan, pola kedua sama dengan pola pertama namun proses menganalisis menggunakan konsep. Berdasarkan pemahaman konsepnya, siswa kategori tinggi menggunakan dua pola. Pola pertama yaitu membaca, memahami masalah, menganalisis, membuat solusi, menyimpulkan. Pola kedua yaitu membaca, memahami masalah, menganalisis menggunakan konsep, merencanakan solusi, melaksanakan solusi, menyimpulkan. Siswa kategori sedang menggunakan dua pola. Pola pertama yaitu membaca, memahami masalah, menganalisis dan menyimpulkan. Pola kedua yaitu membaca, memahami masalah, menganalisis menggunakan konsep, merencanakan solusi, melaksanakan solusi dan menyimpulkan. Siswa kategori rendah memiliki pola yaitu membaca, memahami masalah, menganalisis dan menyimpulkan. Representation in solving the problem gives information on how students understand concepts. Students have a variety of patterns to solve the problems associated with the concept of physics. This study aims to identify: the tendency of student representation, based on the likelihood of resolving problems of representation, pattern of problem solving in building understanding of the concept. This research is a qualitative model of grounded theory. Students are categorized understanding into the category of high, medium and low. The results showed high class students have a tendency symbolic representation, medium and low categories have the tendency visual representation of the image. Students tendency symbolic representation has a pattern of reading, analyzing, planning solutions, implement, conclude. Students tendency visual image has two patterns. The first pattern is read, to understand the problem, analyze, implement and conclude, the second pattern similar to the pattern, but the process of analyzing the first to use the concept. Based on the understanding of the concept, students high category use two patterns. The first pattern is read, to understand the problem, analyze, create solutions, concludes. The second pattern is read, understood the problem, analyze the use of the concept, planning solutions, implementing solutions, concludes. Students category're using two patterns. The first pattern is read, understood the problem, analyze and conclude. The second pattern is read, understood the problem, analyze the use of the concept, planning solutions, implement solutions and concluded. Students low category has a pattern of reading, understanding the problem, analyze and conclude.
Phenomenon of Buying and Selling as Bridging Analogy of Learning Work and Energy
Physics Communication Vol 3, No 1 (2019): February 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v3i1.14921

Abstract

Effective physics learning can be designed by recognizing students' difficulties in understanding physics concepts. Students build the concept through experience gained from the environment, so that they unconsciously have the concept in accordance with the understood. Students still have difficulty distinguishing work and energy definitions in physics and in everyday life. The concept of work and energy can be understood by students if students have good analogy skills. The Brain Based Learning (BBL) model through analogy facilitates learning to improve students' thinking ability analogy. The buying and selling analogy is used to relate concepts that students have understood (source problems) to the concept of work and energy as learning goals (target problems). Quasi-experimental learning is applied to determine the analogy of students. Data were analyzed from the achievement of analogy ability test results before and after learning. The success rate of mastering students' analogy abilities is analyzed from the stages of analogy in solving problems. Achievement of pretest and posttest scores of students 'analogy abilities shows that the BBL model through buying and selling analogy can improve students' analogy skills. The average achievement of students' analogy skills at the stage of generating the analogy includes good criteria, evaluating the analogy relations stage including good criteria, understanding the analogy case stage including good criteria, and at the transfering findings, including not good criteria. The results of the analogy ability show that the BBL model through the analogy of buying and selling gives positive results on the ability of students' analogy.
Development of Air Temperature Measurement Using LM35 Sensor Based on Nodemcu Microcontroller and Internet of Things (IoT) Nurcahya, Mufid Eska; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 5, No 1 (2021): February 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this research is to develop a real-time temperature monitoring instrument based on the Internet of Things (IoT). The research steps were design of a series of tools consisting of a Nodemcu microcontroller and an LM35 sensor, developing a tool that has been designed, testing the tool, and evaluating it. Performance analysis of the tool was carried out by measuring the relative error of the tool that has been developed with a standard thermometer. The result showed that the instrument's accuracy is 99.96% and the relative error percentage is 0.71%. It can be concluded that a room temperature measurement instrument with an IoT-based LM35 sensor can work well.
Analisis Kemampuan Berfikir Kreatif Siswa pada Praktikum Asas Black Berbasis Problem Based Learning dan Berbantuan Makromedia Flash
Physics Communication Vol 2, No 1 (2018): February 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v2i1.12157

Abstract

Pembelajaran di dalam laboatorium membantu siswa dalam mengasah keterampilan mereka menemukan masalah yang ada dalam pembelajran. Siswa dapat berperan aktif dalam pelaksanaan praktikum dan dapat mengobservasi masalah apa yang terjadi serta menemukan cara penyelesaian. Tujuan penelitian ini yaitu untuk mengetahui peningkatan kemampuan berfikir kreatif peserta didik SMK Cordova Margoyoso setelah diterapkan model Problem Based Learning (PBL) dalam praktikum asas black menggunakan makromedia flash. Hasil analisis menggunakan skor rata-rata tes pre test awal sebesar 17,25 dan skor rata-rata post tes akhir sebesar 33,85. Berdasarkan hasil yang diperoleh, disimpulkan bahwa terdapat peningkatan yang signifikan terhadap keterampilan berpikir kreatif siswa setelah diterapkan model Problem Based Learning dalam praktikum asas black menggunakan makromedia flash. Model Problem Based Learning dalam praktikum asas black menggunakan makromedia flash mengharuskan siswa aktif dan membiasakan untuk berpikir kreatif. Model ini memberikan kesempatan kepada siswa untuk mampu menyelesaikan masalah dengan cara yang fleksibel dan mempunyai alasan mengapa memilih cara tersebut (elaborasi).
Analysis of Creative Thinking Skill and Student Learning Interest through Mind Mapping Based Creative Problem-Solving Learning Model
Physics Communication Vol 4, No 1 (2020): February 2020
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v4i1.23846

Abstract

Creative thinking skill is one of the most important skills in the learning process in 21st century. Creative thinking skills influenced by student’s learning interest. Therefore, creative thinking and learning interest must be cultivated through a proper learning process. This research aims to analyze student’s creative thinking skills and learning interest through mind mapping-based creative problem solving learning models. This research method used mixed methods with a sequential explanatory design. The population of this research was all students of class X with 30 students as the sample. The instrument used an essay test for creative thinking, an interview sheet, and learning interest questionnaire. The results of the n-gain alalysis showed an increase for each indicator of the creative thinking skills with an average of 71.73 included in the high criteria. As for the percentage of student’s learning interest is 79.17% which is included in good criteria. The results of the interview showed that there was different creative thinking patterns for each category where students in solving problems tended to begin by understanding the problem, linking scientific theory with their own knowledge, then developing it based on experience and reasoning. However, seen from the answers and interview results, students with very high creative thinking skills are better at providing ideas or conclusions than students with high, medium, and low categories. The results of the correlation analysis showed that there was a positive and significant relationship between student’s learning interest and four indicators of creative thinking skills.
Optimalisasi Waktu Coating pada Bahan Komposit Alam untuk Karakterisasi Morfologi dengan Scanning Electron Microscopy (SEM) – Energy Dispersive X-Ray Spectroscopy (EDX)
Physics Communication Vol 1, No 2 (2017): August 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v1i2.10777

Abstract

Komposit alam berbahan dasar daun jati telah dikembangkan di Universtas Negeri Semarang sebagai bahan alternatif pengganti kayu. Bahan komposit tersebut bersifat non konduktif sehingga untuk mengamati morfologinya dengan SEM (Scanning Electron Microscopy) diperlukan proses coating dengan menggunakan bahan konduktif seperti emas (Au) dan Palladium (Pd). Penelitian ini bertujuan untuk menentukan waktu coating optimal untuk sampel komposit alam. Metode yang digunakan adalah dengan variasi waktu coating yaitu 30 sampai 180 detik dengan penambahan 30 detik pada arus tetap 18 mA. Dari hasil SEM menunjukkan bahwa secara kualitatif waktu coating optimal untuk bahan komposit alam adalah 90 detik. Dari analisis EDX didapatkan penambahan waktu coating mengakibatkan penurunan persentase kandungan unsur bahan komposit alam. Hasil EDX pada waktu coating 90 detik diperoleh kandungan Carbon 10,7 %, Oksigen 1,4% dan Nitrogen 1% dan bahan pelapis Emas 85,5% dan Palladium 0,6%. 
Misconception Remediation through Analogy to Increase the Understanding of Learners Concepts in Rotational Dynamics Subject
Physics Communication Vol 3, No 1 (2019): February 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v3i1.19811

Abstract

This research aims to a11alyze the basic concepts that form a pattern of misconceptions on the rotational dyna111ics. The misconceptions formed by several incorrect patterns of concepts are remediated using a11alogy leaming method. This research is applied using the mix method (qualitative and quantitative). Quantitative data is taken using two tier diagnostic tests for pretest and posttest which consists of 10 questions. Qualitative data is taken by applying direct observations and interviews with the students. The result of the pretest showed a misconception average of 83.8%. Analogy learning process with posttest. After leaming analogy done, the result of posttest showed that misconceptions average decreased to 41.9%. With the decreasing in the posttest, the understanding of concepts average has increased from 16,2 % to 53,6 %. However, the results of this study cannot be said to be effective because there is still incorrect concept pattern from the posttest results. This is due to interest of student in physics, the student ability and the cognitive development.

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