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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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Enhancing Independence and Learning Motivation by Using Youtube Ayu Riyanti, Galuh; Hartono, Hartono; Marwoto, Putut
Physics Communication Vol 3, No 2 (2019): August 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.174 KB) | 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 Theasy, Yoan; Wiyanto, Wiyanto; Sujarwata, Sujarwata
Physics Communication Vol 1, No 2 (2017): August 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.833 KB) | 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.
PHENOMENON OF BUYING AND SELLING AS BRIDGING ANALOGY OF LEARNING WORK AND ENERGY Desianna, Ika; Nugroho, Sunyoto Eko; Ellianawati, Ellianawati
Physics Communication Vol 3, No 1 (2019): February 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (46.918 KB) | 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.
POLA PEMECAHAN MASALAH BERDASARKAN REPRESENTASI SISWA DALAM MEMBANGUN PEMAHAMAN KONSEP FISIKA Lasiani, Lasiani; Rusilowati, Ani
Physics Communication Vol 1, No 1 (2017): February 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.555 KB) | 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.
ANALISIS KEMAMPUAN BERFIKIR KREATIF SISWA PADA PRAKTIKUM ASAS BLACK BERBASIS PROBLEM BASED LEARNING DAN BERBANTUAN MAKROMEDIA FLASH Sriatun, Sriatun; Ellianawati, Ellianawati; Hardyanto, Wahyu; Milah, Isna Lukluil
Physics Communication Vol 2, No 1 (2018): February 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (315.461 KB) | 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).
OPTIMALISASI WAKTU COATING PADA BAHAN KOMPOSIT ALAM UNTUK KARAKTERISASI MORFOLOGI DENGAN SCANNING ELECTRON MICROSCOPY (SEM) ENERGY DISPERSIVE X-RAY SPECTROSCOPY (EDX) Setyaningsih, Natalia Erna; Muttaqin, Rodhotul
Physics Communication Vol 1, No 2 (2017): August 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.944 KB) | 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 Novita Sari, Dian; Linuwih, Suharto; Sulhadi, Sulhadi
Physics Communication Vol 3, No 1 (2019): February 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.362 KB) | 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.
UJI BANDING KUALITAS CITRA RADIOGRAF SISTEM RADIOGRAFI DIGITAL MODIFIKASI TERHADAP COMPUTED RADIOGRAPHY SYSTEM DENGAN METODE CONTRASS TO NOISE RATIO Muttaqin, Rodhotul; Susilo, Susilo
Physics Communication Vol 1, No 1 (2017): February 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (661.508 KB) | DOI: 10.15294/physcomm.v1i1.9000

Abstract

Modification of conventional radiography systems into a digital radiography system was conducted at the Laboratory of Physics Unnes. The image quality of digital radiography system that was developed in the Laboratory of Medical Physics Unnes need to be tested. The computed radiography (CR) system owned by Diponegoro National Hospital was chosen as a comparison with contrass to noise ratio (CNR) methode. Radiograph image generated by both radiography system then analyzed by software based on MATLAB. This study uses a copper plate phantom exposed to X-rays with a variation of anode-cathode voltage of 50 kV, 60 kV, 70 kV and 80 kV. For each voltage to vary the electrical current and expotion time of 1.6 mAs, 2.0 mAs, mAs 4.0, 8 mAs, 16 mAs and 32 mAs. Comparison of CNR for both systems to variations of tube voltage (kV) have a fixed value for the current and expotion time 4 mAs. Comparison of CNR for both systems to variations in current and ekspotion time (mAs) selected tube voltage 70kV.
CONCEPT MASTERY AND SCIENTIFIC LITERACY CAPABILITY OF SENIOR HIGH SCHOOL OF 1 KUDUS STUDENTS Prabowo, Herwidhi Tri; Rusilowati, Ani; Wahyuni, Siti
Physics Communication Vol 2, No 2 (2018): August 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (626.738 KB) | DOI: 10.15294/physcomm.v2i2.14893

Abstract

The purpose of this study is to identify concept mastery and scientific literacy capability of senior high school students. This study used quantitative-qualitative mix method. This study was conducted at senior high school students of 1 Kudus. The subjects of this study were 12th grade student who have received all the subject matter of physics. The instruments of this study were concept-based and scientific literacy-based multiple choice test accompanied by the reason. The level of concept mastery and scientific literacy capability of students was analyzed through the appropriateness of the choice of answers with the reasons. The results shows that the lowest level of concept mastery and scientific literacy capability of senior high school students is item Graduate Competence Standards (GCS) 3 about heat and thermodynamics. From the results can be conclude that concept mastery influences the students' scientific literacy capability
INTEGRATION OF INQUIRY LABORATORY ACTIVITIES IN ARCHIMEDES’ LAW LEARNING Arianto, Ivan Setia; Wiyanto, Wiyanto; Sujarwata, Sujarwata
Physics Communication Vol 2, No 2 (2018): August 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.936 KB) | DOI: 10.15294/physcomm.v2i1.13477

Abstract

This research is aimed to know which ability students can develop through inquiry laboratory activities in Archimedes? law learning and its application to cognitive learning result. This research used mixed method. The quantitative data which were pre-test, post-test, and students? worksheets were taken to know the cognitive learning outcomes of students. Qualitative data presented in this research were video assisted observations and interviews with students as learning process. Those data were used to analyze the ability in observing, questioning, hypothesizing, designing, experimenting, interpreting data, and concluding which students can develop through inquiry laboratory activities in Archimedes? law learning. The N-gain shows that the inquiry laboratory activities in Archimedes? law learning improves students cognitive learning outcomes in SMP Islam Al Azhar 29 Semarang, SMP N 18 Semarang, and SMP Islam Al Azhar 14 Semarang. The Students? ability in observing, questioning, hypothesizing, designing experiments, experimenting, interpreting data, and concluding can develop with inquiry laboratory activities in Archimedes? law learning.

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