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INDONESIA
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Published by Universitas Negeri Jakarta
ISSN : 23021829     EISSN : 24769398     DOI : https://doi.org/10.21009/03
Core Subject : Science, Education, Engineering,
Electrical & Electronics Engineering Energy Physics Other
Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 976 Documents
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PROTOTIPE TURBIN ANGIN SUMBU TEGAK SEBAGAI PEMBANGKIT TENAGA LISTRIK RAMAH LINGKUNGAN Dita Rama Insiyanda; Cecep Rustana; Fitri Kurniati; Ika Murtiningsih; Putri Wulandari; Rolla Tristina Dewi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Turbin angin sumbu tegak yang memiliki desain lebih sederhana dan tidak perlu ada pengarah angin, dapat berputar oleh tiupan angin dari segala arah, dan tidak akan mengalami overspeed, turbin angin jenis ini juga selalu dapat berputar walaupun tiupan angin berkecepatan rendah dan berubah-ubah. Turbin angin ini terdiri dari beberapa bagian diantaranya baling-baling (sudu), rotor (magnet) dan stator (koil/ kumparan) dengan tinggi 65cm. Baling-baling yang di rancang dan diuji adalah baling-baling dua sudu dengan diameter sudu 9 cm (kecil), baling-baling dua sudu dengan diameter sudu 17 cm(besar) , baling-baling enam sudu dengan diameter sudu 9 cm (kecil). Hasil pengukuran ouput tegangan dan arus pada setiap jenis baling-baling dengan variasi kecepatan dibandingkan dengan menggunakan alat ukur multimeter, Berdasarkan hasil pengujian baling-baling dengan 6 sudu berdiameter 9 cm menghasilkan tegangan dan 3.5V-4V (AC) dan 2.1V-2.4(DC), serta arus sebesar 1,3mA-4,1mA (AC) dan 0,8mA-3,4mA (DC).
Analisis Pengaruh Variasi Temperatur Annealing Terhadap Ukuran Kristal Film PVDF Dedi Setiawan; Ambran Hartono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Telah dilakukan fabrikasi film PVDF dengan menggunakan mesin roll hot press. Pembuatan sampel dilakukan dengan memanaskan dan penggilingan serbuk PVDF. Proses annealing dilakukan pada temperatur 130 0C s/d 150 0C. Kondisi ini dilakukan untuk melihat pengaruh temperatur annealing terhadap ukuran kristalit dari film PVDF. Untuk mendapatkan pola difraksi dari sampel maka dilakukan karakterisasi menggunakan X-Ray Diffraction. Selanjutnya dari pola difraksi yang diperoleh, dilakukan perhitungan untuk menentukan ukuran kristalit dari sampel dengan menggunakan persamaan Scherrer. Dari hasil eksperimen dan perhitungan diperoleh ukuran kristalit untuk sampel dengan temperature annealing 130 0C, 135 0C, 140 0C, 145 0C, dan 150 0C secara serempak yaitu 7,2 nm, 7,9 nm, 8,7nm, 10,93 dan 14 nm. Hasil ini memperlihatkan bahwa semakin bertambahnya temperatur akan semakin bertambah pula ukuran kristalitnya. Hal ini terjadi karena dengan semakin bertambahnya temperatur menyebabkan semakin tinggi derajat kristalisasi sampel film PVDF yang terbentuk, sehingga ukuran kristalit juga bertambah. Keywords: PVDF, Roll hot press, Scherrer equation, Annealing Temperature, Cristal Size, X-Ray Diffraction.
KARAKTERISASI SIFAT MEKANIS KALENG MINUMAN (LARUTAN LASEGAR, POCARI SWEAT DAN COCA COLA) Sri Mulyadi Dt. Basa; Fenima Halawa
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Detailed studies about characteristics of mechanical properties soft drinks cans (Lasegar Liquid, Pocari Sweat and Coca Cola) have been conducted. The characterisation on this experiment were investigated using hardness and tensile strength tests. It were observed that tensile strength is inversely proportional to concentration of aluminium on sample of soft drinks canes. Tensile strength decreased with increasing of aluminium concentration in sample. On the other hand, the hardness test show that the value of hardness are comparable to aluminium concentrations in sample. The hardness of soft drink cans increased with increasing of aluminium concentration in sample. Keywords : Tensile strength, hardness, soft drinks cans, aluminium.
MENGEKSTRAK PARAMETER FISIS DARI DATA OBSERVASI (Contoh Kasus Percepatan Gravitasi Bumi) Muhammad Hamzah Syahruddin
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Almost the entire data field of geophysical surveys requires inversion to obtain physical parameters and models. The purpose of this study is to extract the unknown variables (unknown variable) and the physical parameters of the unknown (unknown parameters) of the data field observations. Examples of case studies, is a free fall motion. Measurement of geophysical data is data height (h) and travel time (t). By doing mathematical modeling of observation data can be obtained relationship between h and t. Furthermore, the mathematical models do inversion to get the physical parameters of the unknown. From these physical parameters can be made geophysical modeling. Based on the experimental design and inversion modeling results obtained initial height (ho) is 1.5 meters, the initial velocity (vo) is 6.28099 m / s, and the Earth's gravitational acceleration constant (g) is 9.8 m / s2 Keywords: experiential learning, Mathematical models, physical parameters, inversion modeling.
Gaya Angkat dan Perbedaan Tekanan di Dalam dan Luar Apollo Koran Riani Eka Fitri; Irlian Nurmaniah; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

The square paper Apollos were made from papers and needles with average area 0.005 m2 and 0.00146 kg total mass. It could fly if the burning occupied on the four angel corner of Apollos, this phenomena was due to outside pressure was higher than inside’s. The obtained result of lift force and pressure change of the ten paper Apollos by using kinematic of accelerated motion and Second Newton’s Law were about 0.15 - 0.17 N and 2-3 Pa on 1,2,and 3 meters height. Key words: Paper Apollo, Law of Kinematic and Second Newton, Lift Force, Pressure, Position.
MENGANALISIS FUNGSI IMPLISIT PADA KECEPATAN DAN PERCEPATAN MOBIL-MOBILAN PADA MASSA YANG BERBEDA Riris Purbosari; Imas Ratna Ermawaty
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

This study aims to observe, calculate and assess the implicit function in experimental velocity and acceleration of cars with different masses. Based on the hypothesis of the influence of different mass to the speed and acceleration of cars by using the implicit function, no difference in the distance followed. The method used in the study is the experimental method. With the population is the speed and the sampling is different mass and constant load. The constant load is placed on the disk load that then linked directly to the rope (the rope length is l) and connected to the toy car. Cars placed according to the distance of 80 cm and 100 cm (which is already measured), noted latency. Concluded that the different masses affect the velocity and acceleration using implicit function analysis. The faster moving cars the less time it took the toy car. As well as great speed and acceleration experienced by the different cars each of its mass. The greater the mass of owned cars, the lesser speed of these cars. Applies to acceleration, where the greater mass will be smaller acceleration obtained. The smaller the mass, the greater the acceleration is obtained. Keywords: distance, velocity, acceleration, mass and function implicitly.
SOME DENSITY PROFILES OF AN INHOMOGENEOUS SCHRöDINGER EQUATION T. B. Prayitno
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

We provide some density profiles of an inhomogeneous Schrödinger equation by giving some available functions representing the inhomogeneous term. The inhomogeneous Schrödinger equation, which is achieved by reducing a set of two-coupled Gross-Pitaevskii equations, describes a motion equation of a weakly outcoupled atom laser inside the condensate zone. In this case, to attain the density profile we use the separation of variables in order to simplify our calculation. Keywords: density profile, atom laser, Schrödinger equation.
KARAKTERISTIK SYMMETRIC NUCLEAR MATTER PADA TEMPERATUR NOL Annisa Fitri; Anto Sulaksono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Investigation of characteristics of Symmetric Nuclear Matter is done to check the instability of nuclear structure when heavy ion collisions, which are influenced by non linear terms of the extended relativistic mean field equations. The calculation of the variable compressibility, pressure, the effective mass of nucleons, and sound velocity is done numerically using finite derivatives. The use of nonlinear parameters affect the relationship between the ratio of the density with thermodynamic variables obtained. Non linear terms of meson field interaction give effect to the characteristics of nuclear matter. Representation between the ratio of the density and sound velocity comparison with the speed of light is relevant, and does not indicate unphysical behavior. Keywords: compressibility, mass, meson, nucleons, pressure, sound, velocity.
ANALISA FISIKAMINYAK (PETROPHYSICS) DARI DATA LOG KONVENSIONAL UNTUK MENGHITUNG Sw BERBAGAI METODE Cahaya Rosidan; Listiana Satiawati; Bayu Satiyawira
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Minyak bumi adalah merupakan zat molekul yang terdiri dari senyawa-senyawa hidrokarbon (CH) komplek. Batuan sedimen merupakan batuan yang banyak ditemukannya minyak bumi.Batuan sedimen tersebut umumnya berpori dan merupakan batuan pasir atau karbonat dan terkadang minyak bumi ditemukan juga pada batuan vulkanik. Akibat adanya migrasi salah satu bagian dari petroleum system maka minyak bumi akan terakumulasi dan terjebak dalam cekungan batuan sedimen. Batuan yang menarik bagi para ahli adalah batuan yang dapat menyimpan fluida (air, mineral dan gas) atau biasa disebut batuan reservoir. Batuan ini mempunyai sifat-sifat fisika yang antara lain berpori, permeabilitas dan mempunya tingkat jenuh (saturasi) fluida. Batuan yang berada di bawah permukaan bumi apabila ingin dicari potensi hidrokarbonya dapat menggunakan data (seismic, logging, coring dan cutting). Jika litologi batuan mengindikasikan adanya suatu reservoir, maka untuk membuktikan ada tidaknya hidrokarbon dilakukan pemboran lubang sumur serta serangkaian pengukuran di dalam sumur (logging) dan evaluasi data hasil rekaman untuk memastikan ada tidaknya kandungan hidrokarbon di bawah tanah. Pada penelitian ini yang akan di evaluasi sifat petrophyics dari data log konvensional. Evaluasi sifat ini sangat penting dalam industry perminyakan. Oleh karena itu penelitian Analisa Fisika minyak (petrophysics) dari Data Log Konvensional untuk Menghitung Sw Berbagai Metode perlu dilakukan. Kata kunci: litologi, reservoir, petrophysics.
STUDI AWAL RESPON DINAMIS BERDASARKAN PENGUKURAN MIKROTREMOR DI BENDUNGAN KARANGKATES MALANG Philips Bramantia Mudamakin; Ariska Rudiyanto; Supriyanto Rohadi; Rizki Amalia
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Based on earthquake data over the past 29 years, there were 191 events were felt in the region of Karangkates, Malang. The aim of this study is to determine the trend of dynamic response of the frequency for Karangkates Dam, Malang. This study uses primary data, perform data retrieval directly at the Karangkates Dam, Malang. The instruments named Portable Digital Seismograph type Taide TDL-303S and Digital Seismograph type Taide TDV-23S was used for the microtremor measurements. Microtremors data were analyzed using Horizontal to Vertical Spectral Ratio (HVSR) and comparison of the spectrum of each component by comparing the trend of dynamic response of the frequency. The results showed that the average trend of the frequency each component changed significantly following the activity of water in the Karangkates Dam, Malang. The highest average value for the amplitude spectrum of each component is the vertical component (Z) = 2841.39 at frequency 4.2076 Hz, the East-West component (EW) = 3656.82 at frequency 5.3515 Hz, and the North-South component (NS) = 2223.97 at frequency 5.1708 Hz respectively. Keywords: trend of dynamic response, microtremor, spectrum, frequency.

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