Jurnal Fisika dan Aplikasinya
https://iptek.its.ac.id/index.php/jfa
<p><strong>JFA </strong>(Jurnal Fisika dan Aplikasinya, <strong>Abbreviation</strong>: J.Fis. dan Apl.) only publishes original research articles and reviews articles on topics around physics (theoretical physics, materials, optics, instrumentation, geophysics, and medical physics) and their applications. Manuscripts sent to <strong>JFA</strong> have never been published elsewhere and are not in the process of being considered for publication elsewhere, in any language. Theoretical, experimental, and practical studies are equally encouraged, as are interdisciplinary articles and those arising from industrial research and collaboration.</p><p><strong>JFA</strong> is published three times a year, in January, June, and October. Starting in the January 2021 edition, all articles are written in English. <strong>JFA</strong> editorial address, Department of Physics, FSAD-ITS, ITS Campus, Keputih Sukolilo Surabaya 60111, Tel./Fax.:(031)5943351, email: <a href="mailto:%6a%66%61@%70%68%79%73%69%63%73.%69%74%73.%61%63.%69%64">jfa@physics.its.ac.id</a>; <a class="gb_xb gb_Vf gb_zb" href="https://plus.google.com/u/0/me?tab=mX" target="_blank">jfa.fisika.its@gmail.com</a></p><div id="__if72ru4sdfsdfrkjahiuyi_once" style="display: none;"> </div><div id="__hggasdgjhsagd_once" style="display: none;"> </div><div id="__if72ru4sdfsdfruh7fewui_once" style="display: none;"> </div><div id="__zsc_once"> </div><div>p-ISSN: <a href="https://u.lipi.go.id/1180427166" target="_blank">1858-036X;</a> e-ISSN: <a href="https://u.lipi.go.id/1433920982" target="_blank">2460-4682</a></div><div> </div><div><strong><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b" data-language-for-alternatives="en" data-language-to-translate-into="id" data-phrase-index="0"><span>JFA </span></span></span></strong><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b" data-language-for-alternatives="en" data-language-to-translate-into="id" data-phrase-index="0">has been accredited by the Kemenristek/BRIN with an accreditation rating of</span></span><strong><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b" data-language-for-alternatives="en" data-language-to-translate-into="id" data-phrase-index="0"><span> "SINTA 3".</span></span> </span></strong> <a href="https://drive.google.com/drive/u/1/folders/1tzAX6y5_APvc4v0IELFm7ZlLvaQgjFhw" target="_blank">Cover</a>, <a href="https://drive.google.com/file/d/1nhs2Eznf_beLzJwxvLGh9a0a04-_TDzQ/view?usp=share_link" target="_blank">Certificate</a>.</div><div> </div><div><strong>Publisher</strong>: Lembaga Penelitian dan Pengabdian Kepada Masyarakat, <strong>LPPM-ITS</strong> (<a title="LPPM" href="https://lppm.its.ac.id/" target="_blank">https://lppm.its.ac.id</a>; <a title="PPI" href="/" target="_blank">https://iptek.its.ac.id/</a>)</div><div class="testing_notification" style="position: absolute; z-index: 9999; top: 12px; right: 12px;"> </div>Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITSen-USJurnal Fisika dan Aplikasinya1858-036X<p><strong>JFA (Jurnal Fisika dan Aplikasinya) COPYRIGHT AND CONSENT FORM</strong></p><p> </p><p>To ensure uniformity of treatment among all contributors, other forms may not be substituted for this form, nor may any wording of the form be changed. This form is intended for original material submitted to JFA (Jurnal Fisika dan Aplikasinya) must accompany any such material in order to be published by JFA (Jurnal Fisika dan Aplikasinya). Please read the form carefully and keep a copy for your files.</p><p> </p><p><strong>TITLE OF PAPER/ARTICLE/REPORT, INCLUDING ALL CONTENT IN ANY FORM, FORMAT, OR MEDIA:</strong></p><p><strong>COMPLETE LIST OF AUTHORS:</strong></p><h3>COPYRIGHT TRANSFER</h3><p>1. The undersigned hereby assigns to JFA (Jurnal Fisika dan Aplikasinya) all rights under copyright that may exist in and to: (a) the above Work, including any revised or expanded derivative works submitted to Journal of Physics and Application by the undersigned based on the Work; and (b) any associated written or multimedia components or other enhancements accompanying the Work.</p><p> </p><p align="center">CONSENT AND RELEASE</p><p>1. 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Authors/employers retain all proprietary rights in any process, procedure, or article of manufacture described in the Work.</p><p>2. Authors/employers may reproduce or authorize others to reproduce the Work, material extracted verbatim from the Work, or derivative works for the author’s personal use or for company use, provided that the source and the JFA (Jurnal Fisika dan Aplikasinya) copyright notice are indicated, the copies are not used in any way that implies JFA (Jurnal Fisika dan Aplikasinya) endorsement of a product or service of any employer, and the copies themselves are not offered for sale. </p><p>3. Although authors are permitted to re-use all or portions of the Work in other works, this does not include granting third-party requests for reprinting, republishing, or other types of re-use. The JFA (Jurnal Fisika dan Aplikasinya) Intellectual Property Rights office must handle all such third-party requests.</p><p>INFORMATION FOR AUTHORS</p><p>Author Responsibilities</p><p>The JFA (Jurnal Fisika dan Aplikasinya) distributes its technical publications throughout the world and wants to ensure that the material submitted to its publications is properly available to the readership of those publications. "It is the responsibility of the authors, not the JFA (Jurnal Fisika dan Aplikasinya), to determine whether disclosure of their material requires the prior consent of other parties and, if so, to obtain it." "Statements and opinions given in work published by the JFA (Jurnal Fisika dan Aplikasinya) are the expression of the authors."</p><p>Author/Employer Rights</p><p>If you are employed and prepared the Work on a subject within the scope of your employment, the copyright in the Work belongs to your employer as a work-for-hire. 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The JFA (Jurnal Fisika dan Aplikasinya) distributes its technical publications throughout the world and does so by various means such as hard copy, microfiche, microfilm, and electronic media. It also abstracts and may translate its publications, and articles contained therein, for inclusion in various compendiums, collective works, databases and similar publications.</p><p> </p><p align="center">THIS FORM MUST ACCOMPANY THE SUBMISSION OF THE AUTHOR’S MANUSCRIPT.</p><p align="center">Questions about the submission of the form or manuscript must be sent to the publication’s editor.</p><p align="center">Please direct all questions about JFA (Jurnal Fisika dan Aplikasinya) copyright policy to:</p><p align="center">JFA (Jurnal Fisika dan Aplikasinya) Office, Phone and Fax +62 031 5943351</p><br /><div id="__if72ru4sdfsdfrkjahiuyi_once" style="display: none;"> </div><div id="__hggasdgjhsagd_once" style="display: none;"> </div>Design of an Optical Rotation Value Measurement Tool Using an Arduino Device
https://iptek.its.ac.id/index.php/jfa/article/view/15555
Malus' law asserts that the square of the cosine of the angle formed between two polarizers is directly proportional to the intensity of light after passing through them. In this study, we demonstrate this law using a straightforward configuration. Our method of measuring the polarizer's rotational angle while keeping the other polarizer stationary is innovative. It involves manually attaching a multi-turn potentiometer to one of the polarizers. The Arduino board is connected to the potentiometer and light sensor that is used to detect the intensity of transmitted light, allowing for the measurement of light intensity as a function of rotational angle. Additionally, we think that the configuration as it is now can be helpful in physics laboratory classes. It can also be demonstrated by using it during lecturessoni prayogi2023-10-012023-10-0119Influence of adding a convex lens as a solar concentrator on the performance of solar cooker with an octagonal panel
https://iptek.its.ac.id/index.php/jfa/article/view/15551
Currently, the two most popular renewable energy is solar power and wind power. However, solar power can be harvested almost in every region for a whole year during the day because Indonesia is located at the equator with average daily radiation of 4,8 kWh/m2. One way to use solar power is used in a solar cooker. The octagonal solar cooker is combine of box type solar cooker and panel type solar cooker. The box part is made of a zincalume with a half-cylinder shape as a reflector from the octagonal reflector to the cooking tray. An addition of convex lens put under the cooking tray. In each cooking tray, 500 mL of water was placed, and the sun's radiation heated the water. Performance of solar cooker tested at 09.00 in the morning for two and half hour or 180 minute . The results show that adding four convex lenses improved the solar cooker's performance, allowing the highest temperature to rise to 86 °C and increasing efficiency to 15.9%. In comparison to an addition, only one convex lens raises the temperature to 84,3 °C with a 15.4% efficiency, while the temperature without the lens rises to 70 °C with an 11.4% efficiency.Nurul Amalia silviyanti Siswoyo2023-10-022023-10-0219Effect of Rossby and Kelvin Waves on Intensification and Lifetime of Tropical Cyclones in the Western Pacific
https://iptek.its.ac.id/index.php/jfa/article/view/14339
<p><em>Tropical cyclone is a meteorological phenomenon that occurs on the synoptic scale to the meso scale originating from tropical waters. Weather variability in the tropics can be affected by the Equatorial Planetary Wave (EPW). Identification of the active phase of the EPW wave is done by using a filter on the daily OLR anomaly data in the period of TC occurrence for 5 years which aims to determine the EPW wave in modulating the intensity and lifetime of the TC. The results showed that the EPW wave modulated the TC frequency by 92% of all cases for 5 years in the Western Pacific Ocean which tended to be modulated by the Rossby wave by 45%. While CCEWs modulate TC by 36%, and Kelvin waves modulate TC by 11%. 70% of TCs have lifetimes more than equal to the average indicating that EPW waves modulate TC lifetimes. The global circulation pattern in the study area during the period of occurrence of TC modulated by EPW waves within a period of 5 years shows a cyclonal pattern and maximum wind intensity of more than 40 knots in the 850 hPa layer which supports the formation of TC genesis in the study area.</em></p>Syaidi AbdilahNovvria Sagita2023-10-012023-10-0119WRF-ARW Numerical Model Sensitivity Test on Simulation of Loud Rain in The South Kalimantan Area
https://iptek.its.ac.id/index.php/jfa/article/view/17421
On January 13-14, 2021, there was heavy rain in the South Kalimantan region, causing more than 10,000 houses and the main provincial road to be flooded, and also 2 main bridges collapsed. Based on observations at the Syamsudin Noor Meteorological Station Banjarmasin, the rainfall values on January 13 and 14 2021 were 51 mm and 249 mm, respectively. Meanwhile, at the Banjarbaru Climatology Station, it was recorded on January 13-14, 2021, at 45.9 mm and 255.3 mm, respectively. The amount of rainfall recorded at the Banjarmasin Meteorological Station and Banjarbaru Climatology Station makes this condition interesting to study. This simulation uses FNL data with temporal and spatial resolution of 3 hours and 1°×1°, respectively. In this study, the downscaling stage was carried out 2 times with domain 1 of 16 km and domain 2 of 6 km. Furthermore, the input data is running by testing as many as 9 parameterization schemes. Based on the results of the WRF rainfall output with the microphysics scheme (Kessler), the PBL scheme (Yonsei University Scheme) and the cumulus scheme (Kain-Fritcsh) showed the best value and the smallest error value compared to the other 8 schemes. Based on the CAPE value and air humidity, it proves that the atmospheric conditions are unstable and there is significant growth of convective clouds in the South Kalimantan region. The results of the stremaline analysis also show the presence of strong wind bends that result in the accumulation of air masses and indications of orographic rain in the west of the Meratus Mountains.Abdul Hamid Al HabibResa Agna Firdiyanto2023-10-022023-10-0219Effect of zinc ion substitution on sodium-nickel-manganese materials as cathode materials
https://iptek.its.ac.id/index.php/jfa/article/view/16687
<p>Sodium is one of the new materials to replace Lithium in battery manufacture. For this reason, further research is needed to explore this new material and its composition that meets the cathode material standards. This research aims to synthesize and characterize the Sodium-Nickel-Manganese material with the Zn<sup>2+</sup> combination, which is expected to be used as a battery cathode material. The characterization used is XRD, SEM, and LCR-meter. In this research, we succeeded in synthesizing and characterizing Sodium-Nickel-Manganese material with a particle size of around 250-500 nm. Characterization using an LCR meter obtained conductivity values of 6.77 ×10<sup>-6</sup>,7.46×10<sup>-4</sup> and 5.45×10<sup>-2</sup>S/cm at 100 Hz, 1.86 ×10<sup>-6</sup>,8.75×10<sup>-4 </sup>and 1.16 S/cm at 1.5 KHz, 1.7 ×10<sup>-6</sup>,9.45×10<sup>-4</sup> and 1.51 S/cm at 3 KHz, for Zn<sup>2+</sup> substitution with x=0.1, 0.15, and 0.20, respectively.</p>Maya Puspitasari IzaakYohanes Edi GunantoHenni SitompulYustinus Purwamargapratala2023-10-022023-10-0219Light Spectrum Speckle Analysis in Roughness Material Identification by Using Naïve Bayes Classifier Based Equalization Histogram Adaptive
https://iptek.its.ac.id/index.php/jfa/article/view/18482
Speckle imaging is a method that has been used in various fields. This method can be used to analyze the surface roughness of an object. Speckle imaging uses laser light and observes speckle patterns formed from light interference on the surface. The speckle imaging method is very safe and does not require any contact so it is easy to detect the roughness of an object. In this research, two types of sandpaper were used as rough surface objects. Speckle images of the sandpaper surface were created using three laser diodes with different wavelengths, namely 405 nm, 550 nm, and 650 nm. Image processing in this research begins with pre-processing methods, image segmentation, feature extraction, and then the classification process. The feature extraction process uses an Adaptive Histogram. The classification process uses the Naïve Bayes classifier method. Based on the research results, it was found that variations in the wavelength of the light spectrum affect the results of the Adaptive Histogram image features. The accuracy of Naïve Bayes classification increases if the wavelength used in creating the speckle image is shorter. Identification accuracy increased from 92% to 96% due to the use of speckle images resulting from diode laser irradiation from 650 nm to 405 nm.Muhammad Arief BustomiEdwin Widya UtamaEndah Purwanti2023-10-012023-10-0119