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Journal : Journal of Natural Sciences and Mathematics Research

Determining Hair Thickness using the Light Diffraction Method: Verification of the Seven Times Sliced Hair Phenomenon Ellianawati Ellianawati; Muhammad An’im Arravi; Fitria Wulandari; Rofita Istiqomah
Journal of Natural Sciences and Mathematics Research Vol 4, No 2 (2018): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (667.454 KB) | DOI: 10.21580/jnsmr.2018.4.2.11037

Abstract

Light or optical spectrum is a part of electromagnetic radiation and has several electromagnetic wave properties; one of them is undergoing diffraction. Diffraction or light bending occurred when a light went through a narrow gap. By utilizing that principle, it was proven that a piece of hair could be assumed as a single gap, so the thickness of a piece of hair could be determined, which lead to the explanation of the phenomenon of a piece of hair sliced seven times.  As a tool, the used sim cardholder is used to put hair using adhesive tape. Then the sim card is placed between the light source and the screen. The light source used is a red laser with a wavelength of 660 nm. Hair is placed in two positions: horizontally and vertically. Hair that is laid horizontally will create a vertical light-dark pattern, and hair that is placed vertically will form a horizontal light-dark pattern. The dark and light patterns on the screen are measured using a ruler according to the order of each pattern that is formed. The hair thickness measurement results using a red laser with a wavelength of 660 nm obtained hair thickness of d = (0.01146 ± 0.00019) cm for hair that is placed horizontally and d = (0.01151 ± 0.00011) cm for vertically placed hair. This data has more or less proven that there is potential to "split" the hair into sections, but it has not been proven that the hair can be split into seven parts, so there is still a chance to prove it.
Kentong Damping Sound Intensity Level Based on Kentongan Length Variations Ellianawati Ellianawati; Muhammad An’im Arravi; Fitria Wulandari; Rofita Istiqomah
Journal of Natural Sciences and Mathematics Research Vol 5, No 2 (2019): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.77 KB) | DOI: 10.21580/jnsmr.2019.5.2.11039

Abstract

This study aims to determine the attenuation of the sound produced by a Kentongan musical instrument based on variations in the length of the Kentongan. Data were collected in a quiet room by starting to measure the noise and atmosphere of the room. This study used Sound Meter Software with version 3.4.5 with a maximum sound intensity limit of ~ 90 dB, mobile as an intermediary. This study used Kentongan with a length of 1, 29 cm and a length of 2 that was 34.1 cm. Experiments were carried out 3 times with the first experiment without Kentongan, then Kentongan 1 and then Kentongan 2. The sound intensity produced by without Kentongan is an average of 60.08 dB, then with Kentongan 1 that is, with an average of 61.86 dB, and Kentongan 2 with an average of 56.68 dB. ©2019 JNSMR UIN Walisongo. All rights reserved.
Co-Authors A Rusli A. Sopyan, A. Achmad Sopyan Adhi, Mohamad Aryono Aditya Marianti Afifah, Rachma Afrian, Zain Agung Tri Prasetya Agus Suprianto Agus Yulianto Agus Yulianto Agustin, Lutfia Ali Djamhuri Alvian, Alvian Alvian, Alvian Amalia, Gina Amedia, Frisca Andin Irsadi Anggita, Aisya Puspa Anggraini, Malinda Ani Rusilowati Ardi Soesilo Wibowo Ariati, Theodora Prahereni Novi Arief Budhiman Arif Widiyatmoko, Arif Arifani, Lathifa Izza Arik Pujiyanti Aristawati, Ika Vidiasari Aryani, Nila Prasetya Aryono Adhi Asri, Kanthi Astuti, Fiki Kusuma Aulia, Risma Diah Avrillianda, Decky Aziz, S.N.A. Azizah, Wulan Aulia B. Subali Badruttamam, Muhammad Imam Baihaqi, Muhammad Arifin Bambang Subali Bambang Subali Basyaruddin, Irfan Bien, Nguyen Van Budi Naini Mindyarto, Budi Naini Cahyaningrum, Ryzka Cholila, M. D Rusdiana D. Rusdiana Damayanti, Lilis Darmahastuti, H. Darsono, Teguh Decky Avrilianda Desianna, Ika Devi Meiarti Dewi, Bita Afriyati Dewi, Tanti Agviola Didik Setiawan Didik Setiawan Dyah Rini Indriyanti Edy Cahyono Effendy, Suhardi Effendy, Suhardi Eka Nurrohmah Khumairoh Eko Handoyo Eresa Putri Meilanie Erlina Puspita Wahyuningtyas Esty Setyo Utaminingsih Faikotun Nikmah Fatwa, Ayomi Fazyudi Ahmad Nadzri Febriani, Marosyana Ayu Felia Oktaviana Sekarningtias Fianti Fianti, Fianti Fitria Wulandari Fitriasari , Diah Nur Fitroh, Ummi Nuzulul Fretty Anandita Normala Gelu, Afrianus Gesang Surya Kusuma Ghaida Nisa Gita Ayu Permatasari Gita Surya Shabrina H. Firman Hanik Aida Harianingsih, Harianingsih Hartono, Rudi Helina Pancawardhani Hidayat, Praba Wahyu Ian Yulianti, Ian Ida Kaniawati Idammatussilmi Ihsandi, Aldi Imania, Yayang Fatma Indah Beti Lestari Indah Beti Lestari Indra Kartika Sari Intania, Belita Yoan Irsyat, M. Isdaryanti, Barokah Isnaedi, Wiwi Isnaeni , Wiwi Isnaeni*, Wiwi Isti Hidayah Isti Nur Hayanah Istianah, Naila J Sabandar Janah, Anisa Furtakhul Joko Sutarto Katrina Ramadhani Khulafa, Faris Nur Kurniawan, Yunda Langlang Handayani Lestari, Indah Beti Lisdiana Lisdiana Listiowati, Martiana Putri Listiyanto, Listiyanto Maghfiroh, Ayu Ainul Marantika, Anisa Aulia Maria Ayu Puspita Maria Ayu Puspita Masfufah, Febri Heni Masturi Masturi Maulana Resha Vivadi Merdhenita Restuti Miftakhul Jannah MIFTAKHUL JANNAH Milah, Isna Lukluil Millah, Isna Lukluil Mohamad Sidiq Mohammad Agus Prayitno Mosik - Mudaningrat, Ajeng Mufiatunnikmah, Siti Mufrihah, Fadhilatul Muhammad An’im Arravi Muhammad Khafid Murni Mekua Murni Murni Muslichatun, Muslichatun Nanik Wijayati Natasya Hidayah Octaviani Nguyen Van Bien Niken Tri Widayati Nindy Ulqia Noening Andrijati Norasikin Yahya Novi Ratna Dewi Nugultham, Kulthida Nuni Widiarti Nur Fitri Asih Nur Khasanah Nur Rohmah Tria Romadhoni Nur Wahyudi Nurahman, Nurul Iman Nurdiana, Fitri Nurhasan Ropii Oktaviyanita, Sera Pakungwati, Intan Fauziyyah Pangestuti, Rahayu Parmin - Pontus, Theresia Avila Praptiwi, Ucca Swasti Pratami, Dita Aulia Pratiwi Dwijananti Pratiwi Dwijananti Purwaningsih, Indri Putra, Bayu Ramadhani Putri Handayani Putri Handayani Putut Marwoto Qalfin, Moh. Qori Agussuryani Rachma Afifah Rahmalia, Ulfa Cinta Rahman, Silvani Raji’e, Muhammad Haziq Hazim Ramadhani, Katrina Restuti, Merdhenita Rofita Istiqomah Rohim, Ahmad Minanur Rosyidah, Happy Fathimatur S Siswanto S. N. Khotimah, S. N. S. Wahyuni Samsudi . Sanjung Ariesta Utami Sari, Indra Kartika Sari, Nanda Devita Sarwi - Sarwi Sarwi Sayang Mohd Deni Sekarini, Assa Prima Sekarningrum, Miranti Sekarningtias, Felia Oktaviana Setiani, Yuniar Setiyadi, Hafid Setiyani, Anisa Setyaningsih , Natalia Erna Setyaningsih, Natalia Erna Shaafi, N.F. Shaafi, Nur Farha Shabrina Caesharah Aulia Sharipah Ruzaina Syed Aris Sigit Saptono Simbulas, Lolly Jean Sipayung, Elisabeth Sabrina Purnama Sari Siregar, Sofiyan Sismanto Sismanto Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto, Berlin Siti Alimah Siti Fairuz Dalim Siti Mufiatunnikmah Siti Wahyuni Siti Wahyuni Slamet Firdaus Slamet Haryono Slamet Kusnadi Sopyan, Achmad Sri Haryani Sri Mulyani Endang Susilowati, Sri Mulyani Endang Sri Sumartiningsih Sri Susilogati Sumarti SRI WARDANI Sudarmin Sudarmin Sudarmin Sudarmin Sudarmin Sudarmin Sudarmin Sudarmin Sugianto Sugianto Suharto Linuwih Sumatri, Sri Susilogati Sunyoto Eko Nugroho, Sunyoto Eko Supratman, Ujang Supratman Supriyadi Supriyadi Supriyadi Supriyadi Suryanto, Wiwit Susilo Susilo Sutikno Madnasri Syed Aris, Sharipah Ruzaina Aris Sylvia Ervina Safitri Teoh Sian Hoon Theresia Avila Pontus Tonioka, Nadya Hesty Tri Astuti Tri Joko Raharjo Tri Maria Wea Tri Rahayu Trimurtini, Trimurtini Tyas, Khusnul Estining Tyas Ucca Swasti Praptiwi Ucca Swasti Praptiwi Ulfa, Cinta Rahmalia Ulqia, Nindy Umniyyati, Fiyya Upik Nurbaiti Usna, Usna Utaminingsih, Esty Setyo Vannesa, Leni Via, Faricha Putri Alif Violinzky, Syafaa Diviella Alayya W. Wiyanto Wahyu Hardyanto Wahyu Lestari Wahyu Listiagfiroh Wahyu Wiji Lestari, Dina Ardilla Wahyudi Wahyudi Wahyuni, Desiy Ema Dwi Widayati, Niken Tri Widyaningsih, Mitasari Wiwi Isnaedi Wiwi Isnaeni Wiyanto - Wiyanto Wiyanto Wiyanto Wiyanto Woro Sumarni Wulan Aulia Azizah Wuriningsih, FR Yeni Rima Liana Yeri Sutopo Yulianti , Ian Yulianti, Leni Yuniarti, Nenik Yusof, M.M.M. Yusof, Mohammad Mubarrak Mohd Zahidah, Nila Zahro, Unes Satuz Zakaria, Rosnah Zulfatul Faizah