22 research outputs found

    RANCANG BANGUN LASER UNTUK PEMBELAJARAN OPTIKA DALAM MENENTUKAN INDEKS BIAS DAN DIFRAKSI KISI

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    This research is executed as a mean to make laser with energy  from ex- materials ( DVD) to be used to determine refractive index and  difraction. For that, have been made laser diode appliance network used to determine  \Kprism refractive index and laser wavelength [pass/through] difraction. This research is used by analysis with refractive index characteristic and difraction. Obtained result of that level of prism refractive index at variation of  i1  (30o, 45o dan 60o) equal to (1.53 ± 0.07), (1.45 ± 0.08) and ( 1.53 ± 0.08). Green Laser wavelength at variation of N (100, 300 and 600 line / mm)successively equal to (500 ± 0.03),   (525 ± 0.02) and (541 ± 0.07). Pursuant to prism refractive index theory of[is level of 1.5 and green colour laser wavelength range from (500 – 570) nm. So that can be concluded that result of research have as according to this appliance and theory have  earned to be told good to used in study of optic

    PENENTUAN KOEFISIEN GESEKAN KINETIK KAYU PADA KAYU DENGAN METODE GRAFIS

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    The aim of the reasearch is in order to determine the coefficient of kinetic friction in the wood by using graphical method through the experiment of friction force. To determine the coeeficient of wood kinetic friction by using variety of masses (12 x 10-1, 15 x 10-1, 22 x 10-1, 25 x 10-1, 27 x 10 1, 32 x 10-1, 36 x 10-1, 42 x 10-1, 46 x 10-1, 52 x 10-1) kg. The analysis of data used weighted linear regression with REGLIN which was written in Matlab language and run by the the Windows XP operation system. The outputs of regresion was obtained in the form of linear function coefficients are a0=0.0156 dan a1= 1.972, included the error (Sμ= 0.06). The results was revealed the coefficient of wood kinetic friction of the wood by using graphical method was μk= (0.20 ± 0.06). It was based on the theory that μk= 0.20. The chisqure test showed that there were relationships between fk and m, with the value of probability P ( 2 ÷ 2 ≥ ÷ hit ) = 50.16 %, so that the data was accepted

    PENGEMBANGAN MODUL PEMBELAJARAN INTERAKTIF BERBASIS MULTIMEDIA DENGAN PENDEKATAN TRI-NGA PADA MATAPELAJARAN FISIKA POKOK BAHASAN GLBB

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    Tujuan penelitian ini adalah menguji kelayakan dan respon siswa terhadap modul pembelajaran interaktif berbasis multimedia dengan pendekatan Tri-Nga pada mata pelajaran fisika pokok bahasan GLBB. Jenis penelitian ini adalah Research & Development menurut Borg & Gall yang disederhanakan menjadi tujuh tahapan. Subjek dalam penelitian ini adalah siswa kelas X. Analisis data menggunakan metode deskriptif. Hasil uji kelayakan modul menunjukkan bahwa Sangat Baik  sebesar 52,5% dan Baik sebesar 45%. Respon siswa terhadap modul  adalah Sangat Setuju sebesar 44%, Setuju sebesar 52% dan Tidak Setuju sebesar 4%, sehingga modul tersebut dinyatakan layak dan valid untuk digunakan dalam proses pembelajaran Fisika.Â

    EKSPERIMEN GAYA GESEK UNTUK MENGUJI NILAI KOEFISIEN GESEKAN STATIS KAYU PADA KAYU DENGAN PROGRAM MATLAB

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    This study aims at designing tools to test the coefficient of static timber friction on wood through friction force experiments. Crafting force experiments have been developed to determine the coefficient of static timber friction coefficient on wood. The data was collected 10 times each mass variation and obtained friction force data (fs). The data analysis used a weighted linear regression with REGLIN program written in Matlab and chisquere test. The results obtained by the form of coefficients of linear function are a0 = 0.309 and a1 = 1.937 with ralat (Sμ = 0.010). The amount of coefficient of static friction (μs) of wood on wood using Matlab is μs = (0.402 ± 0.010). This result is in accordance with the theory that μs = 0.40. The chisqure test (χ2) shows that there is a linear correlation between fs and m, with an opportunity value P () = 50.56%, so the data in this experiment is acceptable.Â

    Pengembangan E-Komik Berbasis Heyzine Flipbook pada Materi Sistem Pencernaan bagi Peserta Didik Kelas VIII SMP

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    The purpose of this research is to develop e-comics based on heyzine flipbook on digestive system material for students of class VIII junior high school. This research was developed using a 4D development model which includes the stages of define, design, develop, and disseminate. The data collection technique used in this study was observation, interviews, feasibility questionnaires, and student response questionnaires. Quantitative and qualitative descriptive were used to analyze the data obtained. The results of the study obtained that e-comics based on heyzine flipbook on the digestive system material for class VIII junior high school. The evaluation of the feasibility of e-comic by experts obtained 4.50 with very good criteria (SB). The product feasibility assessment by the science teacher got 4.68 with very good criteria (SB). The evaluation of the feasibility of e-comic by colleagues obtained 4.54 with very good criteria (SB). The results of student responses to the readability test of e-comic obtained an average value of 91% with very good criteria (SB). Based on these results, it can be concluded that the development of e-comics based on heyzine flipbook on digestive dystem material for class VIII junior high school students is suitable for use in science class VIII junior high school learning

    EFEK DOPING Bi2O3 PADA KARAKTERISTIK ELEKTRIK BAHAN FEROELEKTRIK Ba0.95Sr0.05TiO3

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    EFEK DOPING Bi2O3 PADA KARAKTERISTIK ELEKTRIK BAHAN FEROELEKTRIK Ba0,95Sr0,05TiO3. Artikel ini membahas perilaku karakteristik elektrik bahan Ba0,95Sr0,05TiO3 dengan doping Bi2O3 pada rentang suhu suhu 300 °C hingga 650 °C dan atmosfer campuran N2 dan O2 dengan kadar oksigen 20%, 40%, 60 %, 80%, 100%. Sampel berupa pelet Ba0,95Sr0,05TiO3 dengan doping Bi2O3 (0%mol, 0,5%mol dan 1,2%mol). Kajian difusi oksigenmenunjukkan saturasi dicapai setelah 30 menit, terutama pada suhu di atas 400 °C. Cole-Cole plot menunjukkan adanya respon granular dan intergranular yang dipengaruhi oleh suhu. Diketahui bahwa Ba0,95Sr0,05TiO3 merupakan semikonduktor tipe p. Doping menyebabkan kenaikan konduktivitas dan mengubah semikonduktor tipe p menjadi tipe n sampai doping 0,5 % karena konsentrasi elektron bebas lebih besar dari pada hole. Doping yang berlebih (>1%mol) menyebabkan konduktivitas tidak bergantung pada pO2 karena adanya vakansi oksigen yang menetralisir elektron bebas. Pada suhu ≤ 500 °C impedansi kompleks didominasi oleh grain boundary. Pada suhu > 500 °C grain boundary sudah tidak dominan lagi. Besarnya energi aktivasi kurang sensitif terhadap tekanan oksigen, tetapi dipengaruhi oleh adanya doping dalam bahan

    TRACER STUDY PADA LULUSAN PRODI PENDIDIKAN FISIKA

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    Tracer Study is important to be done, with the implementation of tracer studies will be obtained feedback can reveal useful information for Physical Education and Study programs can then be used for the improvement and quality assurance for internal and external quality assurance. This study aims to determine 1) Profile Physical education graduate study program, 2) Suitability Education Graduates by type of work, 3) to determine the input graduates for the development of Physics Education Study Program This research is a descriptive study with a quantitative approach. This study took a random sample. Data collection was done by using questionnaires and documentation. Analysis of data using statistical descriptive analysis in the form of tabulation and visualization in the form of pictures and graphics. The results showed that the profile of a graduate program of study Physical Education variegated, amounting to 92% consistently worked as a science teacher at the junior high and high school physics teacher. By 75% the salaries of graduates of Physics Education> 1 million. This means public recognition of the Physical Education graduates is quite high. Conformance level of education obtained by the type of work, the graduates who worked as a teacher of Physics at the equivalent of high school, 85% support the work, for a science teacher for 60% support for the work and other work only 30% support the work. The waiting period physical education graduate study program is as much as 96% get a job <6 months. Put alumni to study Physical Education Program is room for improvement in the field of infrastructure, soft skills, learning and quality of lecturers. Keywords: Tracer study, graduates, physic

    DESIGN PHYSICS PROPS BASED ON ARDUINO NANO SENSORS ON IRREGULARLY CHANGING STRAIGHT MOTION MATERIALS (GLBB)

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    This study aims to design, test the feasibility and measure the response of students of physics teaching aids based on Arduino Nano sensors on Regularly Changing Straight Motion (GLBB) material. This study uses the method of research and development (Research and Development). The subjects of this study consisted of four validators and 16 students. Data analysis was carried out by descriptive analysis. The results of the feasibility test of the props product obtained a mean score of 3.54 with very good criteria. The results of the students' responses to the teaching aids obtained a mean score of 2.91 with agreed criteria

    MODIFIKASI MAGNET LEVITATION MENJADI MAGNET DIPOLE UNTUK MENENTUKAN GAYA COULOMB PADA PRAKTIKUM FISIKA DASAR II

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    Tujuan penelitian ini untuk rancang bangun alat modifikasi magnetlevitation menjadi magnet dipole untuk menentukan besarnya gaya Coulomb dankuat medan magnet pada praktikum Fisika Dasar II. Metode yang digunakanadalah eksperimen. Teknik analisis data menggunakan uji Chi-Square. Telahdihasilkan sebuah alat praktikum magnet dipole dengan memanfaatkan gayatolak menolak antara 2 kutub magnet yang sama. Diperoleh hasil untuk magnetdipole dengan ring berdiameter 8 mm pada jarak r = 0,003 m besarnya gayaCoulomb dan kuat medan magnet terbesar adalah 25,6 x 10-24 N dan 16 x10-5N/C. Dan untuk magnet dipole dengan ring berdiameter 21 mm dan pada r =0,008 m besarnya gaya Coulomb dan kuat medan magnet terbesar adalah 3,6x10-2 N dan 2,2 x10-4 N/C. Hal ini membuktikan bahwa gaya Coulombberbanding terbalik dengan kuadrat jaraknya. Semakin kecil jarak magnet dipole,semakin besar gaya Coulomb dan kuat medan. Interprestasi grafik berbentukparabola

    Rancang Bangun Inverter Sederhana (IS) dengan Memanfaatkan IC 555 sebagai Pembangkit Tegangan Pada Mata Kuliah Elektronika I

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    The development of the industrial world in the current porous era, which continues to develop in various fields, certainly makes human life easier and full of challenges. In line with the rapid industrial progress, the need for electricity as an energy source is increasing. One of the household electricity needs is the use of an inverter which functions to convert 12 Volt DC voltage into 220 Volt 50 Hz AC voltage. This inverter functions as a backup electricity provider for both vehicles and household needs, as emergency power when the household electricity goes out. In this study, a Simple Inverter (IS) device will be made using IC 555 as a voltage generator needed in Electronics I learning, in which students learn about concepts and their applications. The purpose of this research is the design of IS teaching aids used to increase the voltage in the physics learning of Electronics I by determining the input power and output power. This type of research is development using a 4-D development model. The results of the IS tool test with product feasibility tests from 2 media experts and material experts with an average score of 4.64 or 94.2% and responses from 4 students with an average score of 4.73 or 95.8% so that it is included in the very good category. The average measured input power (63.0 ± 0.5) Wh and the resulting output power IS Innovation (2191 ± 0.5) Wh which means IS works at a Power Gain of 34.8 on a 5 Ah 12 V motor ACCU, with The power capacity used per 60 W is around 15.5 minutes and for ACCU 60 Ah 12 Volt it is around 3.1 hour
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