Bibliographic Details
| Title: |
An innovative approach to determine the dielectric constant of a solid. |
| Authors: |
Pattar, Umapati1 umapati.pattar@gmail.com |
| Source: |
Latin-American Journal of Physics Education. Dec2014, Vol. 8 Issue 4, p4318-1-4318-3. 3p. |
| Subject Terms: |
Permittivity, Oscilloscopes, Low density polyethylene |
| Abstract (English): |
Determination of dielectric constant of a solid involves the measurement of capacitance of the capacitor with dielectric material, if one knows the physical dimensions. The simpler and easier to measure the dimensions of a capacitor is that of a parallel plate capacitor. Here we use commercially available alluminium panel sheet (APS), where the low density polyethylene (LDPE) is laminated using two thin alluminium sheets, which acts as a dielectric material. The capacitances of the different dimensions of the APS are measured and hence the dielectric constant of the LDPE is determined. We measured the time constant from charging curve by applying square waves using a cathode ray oscilloscope (CRO) and hence determined the capacitance. By measuring the dimensions of the samples the dielectric constant was calculated. Low cost, simplicity, and accuracy are the features of this experiment. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): |
La determinación de la constante dieléctrica de un sólido implica la medición de la capacitancia del condensador con material dieléctrico, si se conocen las dimensiones físicas. El tipo de condensador más simple y fácil de medir en sus dimensiones, es el condensador de placas paralelas. Se utilizó panel de hoja de aluminio (APS) disponible comercialmente, en el que el polietileno de baja densidad (LDPE) se lamina usando dos hojas delgadas de aluminio que actúan como un material dieléctrico. Las capacitancias de los APS de diferentes dimensiones se miden, y consecuentemente se determina la constante dieléctrica del LDPE. Se midió la constante de tiempo de la curva de carga al aplicar ondas cuadradas utilizando un osciloscopio de rayos catódicos (CRO), y con ello se determinó la capacitancia. Midiendo las dimensiones de las muestras, se calculó la constante dieléctrica. Bajo costo, sencillez y precisión son las características de este experimento. [ABSTRACT FROM AUTHOR] |
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| Database: |
Education Research Complete |
