scholarly journals KAJIAN KOMPUTASI NUMERIK MODEL INTEGRATIF PADA DIFRAKSI CELAH LINGKARAN MENGGUNAKAN METODE PENDEKATAN SIMPSON 1/3

2019 ◽  
Vol 4 (2) ◽  
pp. 131-141
Author(s):  
Freinademetz Anggur ◽  
Ali Warsito ◽  
Albert Zicko Johannes ◽  
Andreas Christian Louk
Keyword(s):  
Light Intensity ◽  
Numerical Computation ◽  
Maximum Intensity ◽  
Circular Aperture ◽  
Integration Approach ◽  
Circular Slit ◽  
Calculation Results ◽  
Approach Method ◽  
Aperture Diffraction ◽  
Second Peak

Abstrak  Telah dilakukan penelitian tentang   komputasi numerik model integratif pada difraksi celah lingkaran dengan tujuan untuk menerapkan metode simpson 1/3 untuk mencari solusi kasus difraksi celah lingkaran, menghitung nilai integrasi bessel menggunakan metode simpson 1/3, menentukan jarak antara dua intensitas pada pita terang, memperoleh grafik pola intensitas cahaya terhadap jarak pada kasus difraksi celah berbentuk lingkaran. Hasil integrasi yang diperoleh dengan metode simpson 1/3  pada tiga titik puncak intensitas  yaitu 0.14352548, -0.3342371, 0.27050545 Dari hasil perhitungan pada puncak pertama untuk intensitas maksimum pada terang pusat yang berada pada jarak 0.3 cm dengan nilai intensitas 0.91553621, puncak kedua pada jarak 5.1 cm dengan nilai intensitas 0.01718022 dan pucak ketiga pada jarak 8.6 cm dengan nilai intensitas 0.00395745. Dari hasil perhitungan diperoleh grafik antara jarak dengan intensitas sehingga terdapat pola yang membentuk cincin gelap terang semakin besar panjang gelombang sumber maka semakin besar pula jarak antara suatu titik intensitas dari intensitas maksimum. Hasil perhitungan menunjukkan bahwa pendekatan integrasi simpson 1/3 hampir mendekati hasil yang telah diperoleh secara analitik. Dari hasil ini dapat dihitung nilai error dari program terhadap nilai eksak secara analitik dan diperoleh nilai pendekatan yang kecil yaitu -7.95 x 10-6, -6.07 x 10-6, 2.25 x 10-6. Sehingga hasil pendekatan dengan metode Simpson dapat diterima serta dapat dikatakan bahwa program yang dibuat telah berfungsi dengan baik.  Kata kunci: Bessel; metode Simpson 1/3; difraksi celah lingkaran.   Abstract  [Numerical Computation Study Of Integrative Models In The Circular Aperture Diffraction With Simpson 1/3 Approach Method] Research on numerical computation of integrative models on the circular aperture diffraction with the aim to apply the Simpson 1/3 method to find a solution to the circular aperture diffraction case, calculate the integration value of the Bessel using the Simpson 1/3 method, determine the distance between two intensities on the bright band, obtain graph of the pattern of light intensity versus distance in the case of circular slit diffraction. The integration results obtained by the Simpson method at three intensity peaks are 0.14352548, -0.3342371, 0.27050545 From the results of the calculation at the first peak for maximum intensity at the center of light at a distance of 0.3 cm with an intensity value of 0.91553621, the second peak at a distance of 5.1 cm with an intensity value of 0.01718022 and a third peak at a distance of 8.6 cm with an intensity value of 0.00395745. From the calculation results obtained by the graph between the distance with intensity so that there is a pattern that forms a dark ring of light the greater the source wavelength, the greater the distance between an intensity point from the maximum intensity. The calculation results show that the Simpson 1/3 integration approach is almost close to the results that have been obtained analytically. From these results, an error value from the program can be calculated analytically and the exact value of the approach obtained is -7.95 x 10-6, -6.07 x 10-6, 2.25 x 10-6. So the results of the approach with the Simpson 1/3 method can be accepted and it can be said that the program created has functioned well.  Keywords: Bessel;  Simpson 1/3methods;  circular aperture diffraction.

scholarly journals Thin Light Tube Formation by Tightly Focused Azimuthally Polarized Light Beams

ISRN Optics ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Svetlana N. Khonina ◽  
Andrey V. Ustinov
Keyword(s):  
Numerical Aperture ◽  
Polarized Light ◽  
Transmission Function ◽  
Tube Formation ◽  
Destructive Interference ◽  
Circular Aperture ◽  
Theoretical And Numerical Analysis ◽  
Diffractive Axicon ◽  
Aperture Diffraction ◽  
Light Beams

Theoretical and numerical analysis of the transmission function of the focusing system with high numerical aperture was conducted. The purpose of the study was to form a thin light tube in a focal area using the azimuthally polarized radiation. It was analytically shown that, due to destructive interference of two beams formed by two narrow rings, it is possible to overcome not only the full aperture diffraction limit but also the circular aperture limit. In this case, however, the intensity at the center of the focal plane is significantly reduced, which practically leads to the tube rupture. It was numerically shown that long thin one-piece tubes may be formed through the aperture apodization with diffractive axicon phase function or with complex transmission function of Laguerre-Gaussian or Airy-Gaussian beams.

A New Analytical Expression of Overall Collision Efficiency for the Water Droplet Impinging on a Cylinder

2013 ◽  
Vol 392 ◽  
pp. 90-94
Author(s):  
Ling Chen ◽  
Rui Liu ◽  
Yong Xing Cao
Keyword(s):  
Numerical Calculation ◽  
Water Content ◽  
Numerical Computation ◽  
Liquid Water ◽  
Water Droplet ◽  
Liquid Water Content ◽  
Collision Efficiency ◽  
Analytical Expression ◽  
Median Volume ◽  
Calculation Results

The ice amount accreting on the rotating multi-cylinders can be used to obtain the liquid water content (LWC) and the median volume diameter of water droplet (MVD) based on cylindrical icing model. In this model, the overall collision efficiency is usually calculated by Finstads (φ100) and Langmuirs formulations (φ<100). But this combined expression doesnt agree well with the numerical calculation in some case. This paper gives a new expression based on a large number of numerical calculation results, and this expression agrees better with the numerical computation than existing expression.

Crossover from spherical particle Mie scattering to circular aperture diffraction

2014 ◽  
Vol 31 (11) ◽  
pp. 2362 ◽  
Author(s):  
William R. Heinson ◽  
Amitabha Chakrabarti ◽  
Christopher M. Sorensen
Keyword(s):  
Spherical Particle ◽  
Mie Scattering ◽  
Circular Aperture ◽  
Aperture Diffraction

Circular aperture diffraction of multiple interfering beams

2000 ◽  
Vol 185 (4-6) ◽  
pp. 233-237 ◽  
Author(s):  
M.A. Cervantes ◽  
A.A. Lipovka ◽  
M.M. Tavares
Keyword(s):  
Circular Aperture ◽  
Aperture Diffraction

scholarly journals Pengembangan Alat Uji Efisiensi Lampu Berbasis Mikrokontroller Arduino Uno untuk Evaluasi Tingkat Pencahayaan Lampu Meja Belajar di Laboratorium Fisika-Mekatronika Politeknik STTT Bandung

2020 ◽  
Vol 4 (2) ◽  
pp. 65-71
Author(s):  
Valentinus Galih Vidia Putra ◽  
Andrian Wijayono ◽  
Ngadiyono Ngadiyono ◽  
Endah Purnomosari
Keyword(s):  
Light Intensity ◽  
Electrical Power ◽  
Maximum Intensity ◽  
Test Tool ◽  
Sensor Device ◽  
Basic Physics ◽  
Arduino Microcontroller ◽  
Arduino Uno ◽  
Efficiency Test ◽  
Light Efficiency

In this research, a light efficiency test tool has been designed using an Arduino UNO microcontroller to provide an understanding of the use of the ohm law application in basic physics practicum. This lamp efficiency test prototype uses an LDR sensor device and a resistor connected to the Arduino microcontroller as a light intensity detector, while the variation of electrical power is used by an AC variac with the lamp distance to the sensor having a constant value. The experimental results showed that the efficiency of the lamp can be obtained through a gradient of the luminosity curve on electric power. The efficiency of the lamp is 16.935 lm/watt and the average resistance can be obtained on 983.01  which the intensity in lux is 337,05 lux on 157,68 Lm and the maximum intensity in lux can be obtained on 453,35 lux on 208,54 Lm.

The Study of Mathematical Model of the Solar Cell

2013 ◽  
Vol 805-806 ◽  
pp. 103-109
Author(s):  
Su Xia He ◽  
Lin Qin Yue ◽  
En Guang Zhao ◽  
Jian Chao Liu
Keyword(s):  
Mathematical Model ◽  
Solar Cell ◽  
Light Intensity ◽  
Reference Data ◽  
Characteristic Curve ◽  
Temperature Changes ◽  
Calculation Results ◽  
The Mathematical Model ◽  
The Relationship ◽  
Curve Equation

This paper mainly discusses the mathematical model of the solar cell and it I-V characteristic curve equation , discusses the the relationship between parameters. When changes of light intensity and temperature,We uesed measured value for the reference data , the value of ,,,are tested in 25°C,1000W/m2 the battery is the 3909 battery of Suntech. Then we given the Calculate value of ,,,in 25°C,800W/m2, 200W/m2. We uesed measured value for the reference data , the value of ,,,are tested in1000W/m2, 30°C, the battery is the 4209 battery of Suntech. then we given the Calculate value of ,,,in 40°Cand60°C. Finally ,we analysised the change of the four parameters with light intensity and temperature changes, it shows that the calculation results is consistent with the test data. It can reflect the relationship between I-V characteristic and the changes of light intensity and temperature. This study will help us to give the I-V characteristic and data directly , also help us to study solar cell easyly in any environment

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