cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Teguh Darsono
Contact Email
physcom@mail.unnes.ac.id
Phone
-
Journal Mail Official
physcom@mail.unnes.ac.id
Editorial Address
Gedung A Pascasarjana Universitas Negeri Semarang Kampus Kelud Semarang
Location
Kota semarang,
Jawa tengah
INDONESIA
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
 13   14   15   16   17 
Soil Quality Analysis for Dryland Agriculture with Variation of Fertilization and Plant Rotation in Argomulyo District, Salatiga City Nurmaya, Eka; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 6, No 1 (2022): February 2022
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v6i1.33976

Abstract

The study aim is to analyze soil quality for dryland agriculture with variations in fertilization and plant rotation in Argomulyo sub-district, Salatiga city. This study took samples on dryland agricultural land in Ledok Village by taking sample points using random sampling with a cluster sampling pattern by dividing them into 4 clusters. The Step of the research are field and laboratory observation to know the soil pH and moisture, also to determine the soil value and cation test, respectively. Next is the interview step to know the effect of fertilization and plant rotation variation. This research uses quantitative description analysis techniques. Based on the field observation was obtained the cluster 2 has pH value around 6.5 in the category slightly acidic. Then, for cluster 1,3, and has 4 neutral pH category in the range 6.6 – 7.5. The humidity of clusters in the dry category is in the range of 0 - 30%. Laboratory observation shows cluster 3 has a lower resistance around 8.1KW and has the best cation exchange capacity (CEC) test compared with other clusters. Based on the results of interviews, cluster 2 received organic fertilization and crop rotation occurred. Clusters 1 and 4 have not received any planting activity since October 2020. Meanwhile, fertilization in cluster 3 uses inorganic fertilizers. So Cluster 2 soil quality is better than the other three clusters due to organic fertilization and plans rotation so that the soil nutrients become stable. Cluster 1 has poor soil quality due to variations in inorganic fertilization, neglecting the soil, and being planted Manihot esculenta which impacted the reduction in the amount of nitrogen and phosphorus in the land.
Analysis of Kendal Industrial Estate (KIK) impact on the Surrounding Air Quality Cholis, Muhammad Ridwan Nur; Yulianti, Ian; Fianti, Fianti
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.41309

Abstract

The Kendal Industrial Area (KIK) is developed to accelerate economic development in the Kendal district area and to support the acceleration and expansion of economic development. Industrialization will lead to a process of air pollution which is marked by 16 companies that are already operating in the KIK area. This research was aimed to analyze the impact of the Kendal Industrial Estate on air quality. The approach of this research used descriptive method, with an analysis of changes in air quality that occurred before the existence of KIK and after the development of industrial areas. The factors that affect the air quality conditions reviewed in this study were air temperature, surface pressure, wind speed, and relative humidity. Data collection techniques used were secondary data NASA satellite imagery. The results showed that there is a change in air conditions after the presence of KIK as indicated by the increase in air pressure and air temperature and the decrease in relative humidity and wind speed. The results indicates that the existence of the Kendal Industrial Area (KIK) causes changes in environmental conditions, but these changes are not significant so they are still within the comfort limits for industrial areas.
Lagrangian Equation of Coupled Spring-Pendulum System Rini, Nur Widya; Saefan, Joko; Khoiri, Nur
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.40771

Abstract

A coupled spring-pendulum system in a conservative field was studied where the equation of motion of the system using Lagrangian and Hamiltonian equation were obtained. The equation of motion represented by a second-order differential equation from the three generalized coordinate were used. The potential energy equal to zero when the system is in its equilibrium position. The generalized coordinate that being used were the angle of the first pendulum θ_1, the angle of the second pendulum θ_2, and the increase in the length of the spring x. The resulting equation of motion can be used to determine the dynamics behavior of the system at any time. Students' understanding is expected to be more complete by providing a procedure to derive the Lagrangian equation of motion.
The Effect of Ornamental Plants on Reducing the Intensity of Electromagnetic Wave Radiation Lestari, Mugi; Sulhadi, Sulhadi; Sutikno, Sutikno
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.41534

Abstract

Entering the digital era, the culture of human life is increasingly inseparable from the use of electromagnetic waves which are very useful in supporting human life, but in the other side, it also has negative impacts in the form of radiation that threatens human health. Only few people realize that ornamental plants have many benefits other than as a decoration inside or outside the room. Several types of ornamental plants have the ability to absorb electromagnetic radiation emitted by electronic equipment. In this simple physics research, measurements were made to compare the absorption of several types of ornamental plants to electromagnetic wave radiation, those are karet kebo, betel, succulent, ivy plant, and snake plant. The research results show that snake plant’s ability to absorb electromagnetic wave radiation is the greatest than others. Research conducted on ivy shows that the absorption of ornamental plants to electromagnetic wave radiation is influenced by the distance of the plant to the radiation source, where the closer the distance between the ornamental plants to the source of electromagnetic wave radiation is, the greater the absorption of radiation occurs, resulting in a decrease in the intensity of electromagnetic radiation also getting bigger. The trend of changes in the absorption of electromagnetic wave radiation shows a decrease in each increase in distance according to the exponential graph.
Development of Online Mechanics Concept Inventory (OMCI) Instrument Based on Local Wisdom Pujiyanti, Arik; Mindyarto, Budi Naini; Astuti, Budi
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.39143

Abstract

This study discusses the development of online mechanics concept inventory (OMCI) instrument based on local wisdom. The purpose of this study to determine the quality of the online mechanics concept inventory instrument based on local wisdom. The type of this research is Research and Development (RD). The developed instrument is integrated with local wisdom, so that every item has literacy as a stimulus for the question. The concept inventory instrument is one of the test tools presented online which is used to measure students' conceptual understanding. The research model used is Borg and Gall. The instrument developed were validated by expert judgment. The results of the validation assessment are in the form of qualitative and quantitative content validity. The results of qualitative validity can be seen in terms of materials obtained on an average of 99.2%, construction is averaged 93.3%, and language is averaged 97.4%. While the quantitative analysis of validity is done using Aiken's v equations obtained an average of 0.841 of valored 0.841 is so high, it is worth being used to measure understanding the conception of learners.
Analysis of the Need for Electronic Module IPAS Development to Improve Independence, Creativity and Critical Thinking Aristawati, Ika Vidiasari; Marwoto, Putut; Ellianawati, Ellianawati
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.36685

Abstract

According to the HDI, science education in Indonesia has a low number in producing students with independence, creativity, and critical thinking. In fulfilling and improving these criteria, the use of media learning based on Android, HTML, and offline-accessible applications has been enforced. The purpose of this research is to examine the need for developing learning media aiming to increase students' independence, creativity, and critical thinking. Descriptive narrative survey research is used as the method to employ the instrument indicators, including independence, creativity, and critical thinking. The instrument indicators consist of learning process, the need for electronic materials and supporting facilities and infrastructure. This study was conducted on 40 teachers, 3 male and 37 female, at SMK Pusat Keunggulan and 125 students, two females and 123 males, at SMKN 1 Trenggalek, two female and 123 male students. The survey on the students is also conducted to acknowledge and measure the indicators, including independence, creativity, and critical thinking. Data analysis is carried out through the validation of the instrument as the first step. After being revised, the implementation of the instrument was then conducted. Following the steps, the data were analyzed by applying Likert analysis. Based on the data obtained, 88% of the students and 100% of the teachers required innovative, intriguing, and accessible electronic-based materials to support and enhance both comprehensions of the lessons. Students who are categorized as less independent have 83.25% independency, 68.25%, and 83% critical thinking in average. As a result, learning media that are accessible offline, based on Android, HTML, and applications, are required.
Development of Test Instruments in Substance Pressure to Measure Student's Numerical Literacy Ability Fatmala, Rita Iva; Rusilowati, Ani; Astuti, Budi
Physics Communication Vol 7, No 1 (2023): February 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i1.36920

Abstract

The purpose of this study was to develop an instrument test to measure student's numeracy literacy skills on substance pressure and its application. The research was conducted using the Research and Development (RD) development method trough the ADDIE research design (Analysis, Design, Development, Implementation, and Evaluation) through several stages, namely curriculum analysis, content analysis, context analysis, and determining instrument framework, instrument development, pilot testing instrument and item analysis of the instrument. The trial was conducted on a sample determined by a random sampling technique. The item analysis of the instrument includes item validity test, item reliability test, item difficulty level, and item discriminatory power. The results of this study were the test instrument of numeracy literacy in the form of multiple-choice questions with 18 reliable questions with a reliability coefficient of 0.903. Based on the validity test, there are 5 questions with moderate validity category, 10 questions with high validity category, and 3 questions with very high validity category. Based on the results of the discriminatory power test and the level of difficulty of the questions, it was obtained that all questions had distinguishing power in the good category with the difficulty level of the questions in the easy, medium, and difficult category are 1, 13, and 4 questions, respectively. Therefore, it can be concluded that the numerical literacy test instrument on the substance pressure material and its application can be used as a test instrument to measure student's numeracy literacy skills.
The Effectiveness of Forming a Pancasila Student Profile by Implementing a Project Based Learning Model on Newton's Law Material Tri Maria Wea; Putut Marwoto; Ellianawati Ellianawati
Physics Communication Vol 7, No 2 (2023): August 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i2.42174

Abstract

This study aims to find the effectiveness of forming a Pancasila student profile by applying a project based learning model in the physics learning process for Newton's Law material in class X MIPA students at SMAN 1 Bajawa. The dimensions of the Pancasila Student Profile include three dimensions, namely the ability to think critically, creatively, and mutual cooperation. This type of research is a mixed method sequential explanatory. Data collection instrument were tests and observation guidelines. The results of the data analysis show that the project based learning model contains Pancasila student profile values. Based on the research data, it was obtained that the students’ abilities on the Pancasila student profile is in the good category. The ability to critical thinking and crietive thinking has increased and can foster an attitude of mutual cooperation in students after being treated using a project based learning model. The N-gain value of critical thinking is 64.3% and classic completeness is 93%, the N-gain creative thinking increases by 68.5% and classic completeness is 90%, the students' cooperative attitude is 83% in the good category. This shows that the project based learning model that was implemented is effective in strengthening the profile of Pancasila students.  The class control uses the  PBL model N-gain value of critical thinking was 57.7%, the N-gain creative thinking increased by 53.3%, the mutual cooperation attitude of the students was in the with the medium category.
Photonic Crystals based Biosensors in Various Biomolecules Applications Eunike Friska Defvi; Lita Rahmasari
Physics Communication Vol 7, No 2 (2023): August 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i2.43447

Abstract

Over the past decades, photonic crystals have emerged as interesting photonic structures. It plays a vital role in many fields of optical communication, biomedical sensing, and other applications due to its compactness, high sensitivity, high selectivity, fast responsiveness, etc. Strong light confinement in photonic crystals and adjustment of its geometrical parameters have led to the emergence of photonic crystal biosensors. Biosensors are extensively employed for diagnosing a broad array of diseases and disorders in clinical settings worldwide. Photonics crystal-based biosensor is one of the solutions to detect various diseases. By using literature review method, this paper aims to explore applications of photonic crystal-based biosensors to encounter the sensitivity of various biomolecules for cancer, malaria, and blood components detection.
Rasch Model Analysis: Development of Literacy Numeracy Assessment Instrument of Electromagnetic Induction Nurul Apriani Susanti; Sarwi Sarwi; Mahardika Prasetya Aji
Physics Communication Vol 7, No 2 (2023): August 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i2.46019

Abstract

This research aimed to describe the validity of a numeracy literacy assessment instrument of electromagnetic induction based on minimum capability assessment (MCA) which was develop using Rasch model analysis assisted by Winstep software. The research employed the research and development design with a modified Mardapi model. The instrument was constructed by developing fifteen questions. The analysis of the instrument was utilized to measure the construct and item validity, reliability, item difficulty level, and item discriminatory. This research involved 32 participants in the small-scale test and 206 participants in the large-scale trial. The test result showed that the fifteen questions were suitable to use because it has values that meet the criteria for all measurement variables both on small scale and large-scale tests and could be assess students' numeracy literacy skills.

Page 15 of 17 | Total Record : 168

 13   14   15   16   17 

Filter by Year

2017 2024


Reset
Filter By Issues
All Issue Vol 8, No 2 (2024): August 2024 Vol 8, No 1 (2024): February 2024 Vol 7, No 2 (2023): August 2023 Vol 7, No 1 (2023): February 2023 Vol 6, No 2 (2022): August 2022 Vol 6, No 1 (2022): February 2022 Vol 5, No 2 (2021): August 2021 Vol 5, No 1 (2021): February 2021 Vol 4, No 2 (2020): August 2020 Vol 4, No 1 (2020): February 2020 Vol 3, No 2 (2019): August 2019 Vol 3, No 1 (2019): February 2019 Vol 2, No 2 (2018): August 2018 Vol 2, No 1 (2018): February 2018 Vol 1, No 2 (2017): August 2017 Vol 1, No 1 (2017): February 2017 More Issue