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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 6 Documents
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Search results for , issue "Vol 8, No 1 (2024): February 2024" : 6 Documents clear
The Influence of Lighting on The Bedroom Towards The Sleep Quality of Children Aged 0-5 Years Uding, Risnawati; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.41318

Abstract

Lighting in the bedroom is important in maintaining the quality of children's sleep. At the age of 0-5 years, a child has a sleep duration of around 11-18 hours, so it is necessary to pay attention to the lighting in the bedroom so that children have quality sleep time. This study aims to determine the effect of lighting in the bedroom on the sleep quality of children aged 0-5 years. Samples were taken randomly with the age range of children 0-5 years with the criteria of children accustomed to sleeping with the lights off as many as 6 samples.  The number of samples was adjusted to the availability of samples around the research site in Tinjomoyo village. Data collection techniques were observation and questionnaires. The parents of the sample filled out the observation sheets and questionnaires. The duration of data collection depends on how many times each sample wakes up during sleep at night, starting when the child falls asleep until 03.00 AM. The results showed that there was an effect of bedroom lighting on the sleep quality of children aged 0-5 years as indicated by a change in the child's total awakening, which is an average of 2 fewer awakenings during sleep from the lights on to the lights off.
Optimizing Atmospheric Ion Harvesting Electrodes with Graphene for Clean Energy Generation Based on Capacitive Properties and Energy Storage Rahiemy, Ghitha Nadhira Azka; Irham, Zulfikar; Gumilang, Yuma Estu; El-Syifa, Avisena Kemal; Yunita, Duta Norma; Sulistyani, Eko Tri
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.48348

Abstract

The atmosphere is rich in positive ions, rendering it electrically more positive than the Earth's surface. This characteristic presents the atmosphere as a potential source of renewable energy through ion harvesting. This study harnesses the electrical properties by optimizing ion harvesting electrodes using pristine graphene and graphene-Au thin films to generate clean electricity. Research methods included Raman Spectroscopy and Cyclic Voltammetry (CV) to assess the surface characteristics and capacitance of the graphene samples, along with laboratory-scale ion harvesting simulations to evaluate the energy data produced in the ion harvesting process. The samples used in this study were identified as bilayer graphene, as confirmed by Raman Spectroscopy. CV testing yielded capacitance values of 0.40288 F for pristine graphene and 0.44879 F for graphene-Au samples. According to ion harvesting simulations, graphene-Au generated approximately 6.8 times more energy than pristine graphene and five times more energy than copper alone. The respective energy outputs for graphene-Au, pristine graphene, and pure copper were 1.376 mW, 1.157 mW, and 0.374 mW. These results demonstrate that adding a graphene layer to the atmospheric ion-harvesting electrode can optimize the electricity generation process.
Application of Pedagogical Content Knowledge (PCK) on Magnetic Materials Assisted by Flash Player Media to Improve Student Learning Outcomes and Activeness Gelu, Afrianus; Ellianawati, Ellianawati
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.43918

Abstract

Pedagogical Content Knowledge (PCK) is the interaction between pedagogy and content. PCK describes the ability of teachers to integrate knowledge of the content into their knowledge of learning and student characteristics that can guide the learning situation. Flash Player media is software used to stream and view video, audio, and multimedia on a computer or supported mobile device. The purpose of this research is to know the application of PCK strategy based on flash player media to increase the mastery of concept and student learning activity. The research method used is classroom action research. Data collection techniques are carried out through tests, observations and interviews during learning. From the research results obtained t count 16,087 t table 2,02 showing that the PCK strategy based on flash player media can improve the mastery of student concepts. The observation data in the experimental class shows that there is an increase in student learning activity. In general, the conclusion that can be drawn from this research is PCK strategy based on flash player media has positive effect in the case of the improvement of learning outcomes and student learning activeness
Blended Learning Using PhET and Props to Improve Students Concept Understanding Benta, Monika Grasiana; Wiyanto, Wiyanto
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.41184

Abstract

This study aims to improve students' understanding of concepts for high school class X on topic of Work and Energy. This research is a quantitative research, a type of experimental research, namely Tru Experimental Design. The research design used pre-post test experiment design. Instruments used in research using assessment of students' concept understanding. The results of the study of  concept understanding using the Blended Learning model are 0.69 and Conventional is 0.64 which both use PhET media and teaching aids. Blended Learning is slightly higher. The effectiveness of Problem-Based Learning between Blended Learning classes shows the average result of understanding student concepts is 84.08 and conventional classes show the average result of understanding student concepts is 82.11. The independent t-test analysis was -1.02 and the significant 2-tailed was 0.31, while the 0.05 study alpa showed 0.300.05. Significant results show that Blended Learning classes are more effective than conventional classes.
Application of the Global Warming Learning System (GWLS) as an Effort to Improve Student’s Learning Outcomes and Critical Thinking Ability Astuti, Adina Widi; Mindyarto, Budi Naini; Aji, Mahardika Prasetya; Astuti, Budi; Atun, Cholis
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.44920

Abstract

This Classroom Action Research (CAR) aims to improve learning outcomes and critical thinking skills of class X-K SMA Negeri 6 Semarang, through the application of adaptive teaching materials Global Warming Learning System. The learning model used is Problem Based Learning with group investigation method (cycle I) and Project Based Learning with product differentiation (cycle II). CAR is carried out in two cycles, where each cycle consists of four activities, namely action planning, action implementation, observation and reflection which adopts the Kemmis and Taggart models. Data collection techniques used in this study were observation, tests, questionnaires and interviews. Data analysis used a qualitative descriptive approach based on educational outcomes and improving students' critical thinking skills. The results show that there has been an increase in educational outcomes and critical thinking skills (pre-cycle to cycle I) and (cycle I to cycle II). Evidenced by the results of studying at first cycle, which was completed by 15 students (41.67%) and the students' critical thinking skills, the average 71.59% was high category. Meanwhile the educational outcomes of physics cycle II which were completed were 28 students (77.78%) and the ability to think critically with an average 78.88% was high category
Noise Analysis Around Jababeka – Cikarang Industrial Area Yuliana, Yuliana; Fianti, Fianti
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.40873

Abstract

Noise is an unwanted sound from a business or activity at a certain level and at a particular time that can cause disturbances to human health and environmental comfort. Noise can cause psychological and physiological impacts. The Ind is one of the largest industrial areas in Bekasi Regency, West Java. This study aims to analyse the noise levels around the industrial area of Jababeka-Cikarang. This type of research is survey research with a quantitative approach. This study measures the sound intensity level in the Jababeka–Cikarang area, up to a distance of 20 km from the Jababeka – Cikarang area. Data analysis used descriptive analysis in the form of graphs. The study results show that the noise level in the Jababeka-Cikarang area exceeds the threshold set by the Threshold, which is 70 dB to 85 dB.

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