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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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Uji banding kualitas citra radiograf sistem radiografi digital modifikasi terhadap computed radiography system dengan metode Contrass to Noise Ratio
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.v1i1.9000

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.
Integration of Inquiry Laboratory Activities in Archimedes’ Law Learning
Physics Communication Vol 2, No 2 (2018): August 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | 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.
The Effect of Surface Color on the Absorption of Solar Radiation Paminto, Joko; 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 | DOI: 10.15294/physcomm.v5i1.33885

Abstract

This research was conducted to verify the effect of the color of the object's surface on the absorption of solar radiation. The purpose of this study was to determine how the effect of surface color on the absorption of solar radiation. The activity used an acrylic box covered by stickers of various colors, placed under the sun, then measured the heat absorption of the covered liquid using a digital thermometer. The results showed that there was an effect of the color of the object's surface on the absorption of solar radiation which was indicated by the difference in the temperature increase of the covered liquid. The hypothesis can be accepted at the 95% confidence level. The order surface color of objects on the absorption level of solar heat is black, green, red, purple, yellow, pink, blue and white from the highest to the lowest.
Concept Mastery and Scientific Literacy Capability of Senior High School of 1 Kudus Students
Physics Communication Vol 2, No 2 (2018): August 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | 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
Pembelajaran Berbasis Produksi sebagai Upaya Peningkatan Keterampilan Produktifitas Siswa SMK
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.v2i1.11338

Abstract

Pembelajaran berbasis produksi bagi siswa Teknik Pemesinan SMK Tunas Harapan Pati telah dilakukan sebagai upaya membekali keterampilan berwirausaha dan persiapan siswa memasuki dunia kerja serta mengantisipasi pemutusan hubungan kerja. Pembelajaran berbasis produksi dilakukan dengan cara penugasan produksi alat teknologi rekayasa. Pembelajaran fisika berbasis produksi dilaksanakan empat tahapan yakni tahap perencanaan disain, persiapan kerja, poses produksi, penilaian produk. Penugasan melalui beberapa tahap yakni tahap perencanaan disain, persiapan kerja, produksi, penilaian produk. Pembelajaran  fisika berbasis produksi dapat meningkatkan nilai rata-rata aspek produktifitas dan akuntabilitas sebelum pembelajaran proyek adalah 80,00  setelah pembelajran proyek nilai rata-ratanya menjadi 87,00 dengan N-gain 0,36. Nilai rata-rata desain siswa adalah 90,25 termasuk dalam kriteria sangat kompeten. Nilai rata-rata produk hasil produksi siswa adalah 84,33 termasuk dalam kriteria kompeten. Pembelajaran  fisika berbasis produksi mampu meningkatkan keterampilan produktifitas siswa SMK.
Conductivity of Groundwater In Semarang City
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.v0i0.25580

Abstract

Semarang is the capital of Central Java Province and is the most developed city in Java island. This city is one of the most important cities in the north coast of Java. Most of Semarang’s landscape consists of lowland areas that become floodplain of the large rivers that flow through the city. Water is not only used for drinking but also for other necessities such as bathing, washing, agricultural and industrial needs, electricity generation, etc. The objective of this study was to determine the conductivity value of groundwater from several locations in Semarang as the conductor of electricity. This study used groundwater samples from seven locations in Semarang. The tests conducted including TDS (Total Dissolved Solid) test by inserting TDS meter into the water and recorded the value after 3 seconds of observation. The conductivity test was done by water electrolysis using a buzzer circuit. The test was conducted by inserting the electrode into the water for 3 seconds, then observed the buzzer sounding (soft or loud). Afterward, the water temperature was recorded using the thermometer. Results of this study showed the different water conductivity of groundwater collected from different locations. The lowest conductivity was obtained from S-1 sample with TDS value of 50 ppm, while the highest conductivity was obtained from S-7 sample with TDS value of 549 ppm. The higher the TDS and temperature value, the higher the electrical conductivity. 
Pengaruh Model Pembelajaran Generatif Berbasis Hands-On Activity pada Materi Fluida Dinamis terhadap Kemampuan Berpikir Kritis Siswa
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.v1i2.10431

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran generatif berbasis hands-on activity pada materi fluida dinamis terhadap kemampuan berpikir kritis siswa kelas XI IPA SMA Negeri 5 Palu. Metode yang digunakan adalah eksperimen kuasi dengan non-equivalent control group design. Populasi penelitian ini adalah seluruh siswa kelas XI IPA SMA Negeri 5 Palu. Teknik pengambilan sampel pada penelitian ini adalah teknik purposive sampling. Kelas XI IPA 1 dengan jumlah peserta didik sebanyak 27 orang dipilih sebagai kelas eksperimen dan kelas XI IPA 2 dengan jumlah peserta didik sebanyak 27 orang dipilih sebagai kelas kontrol. Instrumen yang digunakan berupa tes kemampuan berpikir kritis berbentuk uraian berjumlah 8 soal yang telah divalidasi. Setiap unit soal mengukur satu indicator kemampuan berpikir kritis yaitu fokus pada pertanyaan, menganalisis argumen, menilai kredibilitas sumber, membuat kesimpulan secara deduktif, membuat kesimpulan secara induktif, menilai definisi, mendefinisikan asumsi, dan mengambil keputusan dalam tindakan. Berdasarkan hasil pengolahan data menggunakan uji statistik, diperoleh rerata skor posttest kelas eksperimen sebesar 78,09 dengan standar deviasi sebesar 15,34 dan kelas kontrol sebesar 69,00 dengan standar deviasi sebesar 15,65. Analisis data dilakukan dengan teknik statistik uji-t dua pihak untuk menguji perbedaan rerata skor kemampuan berpikir kritis siswa. Hasil perhitungan diperoleh nilai . Nilai  pada taraf nyata  dan . Hal ini berarti, nilai  berada pada interval penolakan  sehingga  diterima. Secara kuantitaif juga dilakukan uji N-gain dan diperoleh hasilnya untuk kelas eksperimen , dan untuk kelas kontrol . Hasil uji ini mengindikasikan bahwa model pembelajaran generatif berbasis hands-on activity lebih unggul daripada model pembelajaran generatif. Berdasarkan hasil uji yang telah dilakukan menunjukkan bahwa terdapat pengaruh model pembelajaran generatif berbasis hands-on activity pada materi fluida dinamis terhadap kemampuan berpikir kritis siswa kelas XI IPA SMA Negeri 5 Palu.
Analisis kemampuan berpikir deduksi hipotesis terhadap pemahaman konsep rangkaian resistor pada listrik arus searah
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.v1i1.8967

Abstract

The development of technology needed humans that qualified and high in order thinking. Hyphotetical deductive thinking is one of high order thinking. It is appeared on students of senior high school in Tambakboyo by their scientific research. Result of observation physics teacher’s RPP still used to talkative methode. Understanding abstract concepts need laboratory activity to formed thinking student. This study aims to know correlation between hyphotetical deductive thinking and concepts understanding, profile of thinking and concept understanding. The subjects was selected using saturated sampling. Design of study using sequential explanatory. There is positive correlation between hyphotetical deductive thinking and concept understanding. Correlation category on XI IPA is medium and strong. Correlation both of them was influenced by another factors like the difficulty of students and trouble in lack of time when do hyphotetical deductive test and direct current resistive electrical circuits test is easy because this subject was learned in X class. Profiles thinking in XI IPA is dominant on transition and hyphotetical deductive thinking. Profiles  of concepts understanding by XI IPA on good and good enough category. 
The Profile of Physical Problem-Solving Based on Student’s Personality Types
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.v3i1.15258

Abstract

Problem solving is important for learning physics at any level which involves the process of analysing, interpreting, reasoning, predicting, evaluating and reflecting. However, researches about problem-solving strategies or techniques based on students’ personality have not been widely practiced. This strategy is important to be studied based on thoughts, characters and actions of students. Therefore, the aims of the research are to connect students problem solving of physics based on their personality and identify students problem solving pattern based on their personality according to The Four Temperament Theory of Keirsey (1998). The method used in this research is descriptive qualitative research with the type of Investigation of Lived Experience that explores inner experiences (Gall et al, 2003). Subjects in this study are 12th grade students of science class program of MAN 1 Banyumas which is determined by stratified sampling approach. They were divided into homogeneous groups. The grouping is based on Keirsey's four personality types: Idealist, Artisan, Guardian and Rational. Each personality type, selected nine students as research subjects are determined using purposive sampling technique. The results showed that the strategy of physics problem solving of Idealist type was conceptual problem solving, Artisan type used intuitive-analogic for solving the problem, Guardian type used intuitive for solving the problem, and Rational type used analogic strategy for solving the problem.
The Implementation of Q-SETS-Based Physics Teaching Materials Containing Characters to Increase Students' Interest in Learning Alfiyah, Dewi; Wahyuni, Siti
Physics Communication Vol 5, No 1 (2021): February 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v5i1.34732

Abstract

Good physics teaching materials are teaching materials that present physics concepts that can be understood by students easily and can attract students to read and study physics. However, its implementation is currently not running perfectly. The Q-SETS-based physics teaching materials containing characters are expected to be a solution to encourage students' interest in learning physics, given that interest in learning is an important factor in achieving the success of education. This study intends to analyze the increase in students' interest in learning after using these teaching materials. The method used in this study is an experimental method with students of class X RPL 2 and X MM 3 SMK Negeri 8 Semarang as research subjects. The results of the students' interest in learning before and after being given the Q-SETS-based physics teaching materials containing the characters were 70.08% and 80.51%, respectively. Then, there was a medium category containing an increase in learning interest with an N-gain of 0.35.

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