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All Journal UPEJ Unnes Physics Education Journal JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Mutiarani, Azizah
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Astronomy Education Electrical & Electronics Engineering Energy Physics

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Kisi Difraksi Sederhana Berbasis Alam : Bawang Daun (Allium fistulosum) dan Jantung Pisang (Musa paradisiaca) Nafisah, Durrotun; Mutiarani, Azizah; Hakim, Luqman; Marwoto, Putut; Fianti, Fianti; Subali, Bambang
UPEJ Unnes Physics Education Journal Vol 10 No 1 (2021)
Publisher : UPEJ Unnes Physics Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/upej.v10i1.46648

Abstract

Diffraction is one of the properties of light in the form of a bending event in the direction of the propagation of the waves through a narrow gap. Research on natural materials as an alternative to grating has been carried out with varying results. Natural ingredients in the form of scallion stems (Allium fistulosum) and banana heart (Musa paradisiaca) were chosen as the diffraction lattice preparations because they have fibers that resemble scratches on the diffraction grating produced by factories. Special care is given to each preparation to obtain the fiber. By using Tracker and analysis of the level of accuracy, the results obtained value m, and an accuracy of 95.81% for the diffraction grating of scallion stems, and the value of d = and accuracy of 90.01%. The results of this study indicate that scallion stalks and banana blossoms have potential and can be used as diffraction grating to explain light diffraction phenomena.
Analisis Nilai Kalor dan Laju Pembakaran Arang Cangkang Buah Karet Hadijah, Siti; Mutiarani, Azizah; Masturi; Yulianti, Ian
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 6 No. 2 (2022): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v6i2.787

Abstract

Rubber fruit shells are found as agricultural waste. Many farmers have not used rubber fruit shells. Therefore, the researchers made alternative fuels from rubber fruit shells containing 60-80% cellulose and 5-20% lignin. The research objective was to analyze the calorific value and burning rate of rubber fruit shell charcoal. The combustion rate test is carried out by burning charcoal and measuring how long it takes to turn into ash, and the mass of the burned ash. The heating value is done by making a simple furnace from a can filled with charcoal with a mass of 5g, 10g, 15g, 20g, 25g and 30g. 200ml of water is placed on the stove until it boils, measure the time and temperature when it boils. The result of the longest burning rate is 2.12g / minute. The heating value that results in high temperatures and large coals is 332.4 kJ. The conclusion of this study is that rubber fruit shells which have a large mass are very good to be used as an alternative fuel with a very high combustion rate and calorific value.
Co-Authors Anak Agung Gede Sugianthara Bambang Subali Durrotun Nafisah Fianti Fianti, Fianti Ian Yulianti, Ian Masturi Putut Marwoto Siti Hadijah