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Determination of the dynamic viscosity coefficient of the Stokes viscometer – construction of a measuring set in the Physical Laboratory of the State Higher Vocational School in Tarnów

Wietecha Tomasz, Kurzydło Piotr M.

Science, Technology and Innovation

2019

Vol. 5, no. 2

60--65

A Stokes viscometer made and launched by the authors in the Physical Laboratory of the State Higher Vocational School in Tarnów was presented. The construction of the viscometer is discussed and the theoretical description of the physical phenomena occurring there is given. The results of measurements on the device, statistical analysis of the measurement uncertainties and confrontation with the literature value are presented - the obtained results correspond very well to the literature values. A possible further development in the accuracy of theoretical description and experimental measurements related to the ellipsoid analysis of the shape of water droplets was suggested. The didactic aspects of the new experiment in the context of the understanding of molecular physics, especially by students of material engineering, were discussed.

Cyfrowa analiza zależności między barwą koron na zdjęciach lotniczych a stanem zdrowotnym drzew

Adamczyk J., Będkowski K.

Roczniki Geomatyki

2006

T. 4, z. 4

47-54

On CIR images near infra red range of electromagnetic radiation is registered. In this range the difference between reflectance of terrain objects and trees species becomes more clear. Three digital images corresponding to the component colors in RGB were obtained by scanning analog images. The colors represent intensity of solar radiation recorded on the image. Digital recording is considered an objective representation of the color phenomenon. The paper presents digital analysis of classification of tree crown (spruce) results for three health levels, carried out by using visual method, by different operators. It was found out that the results were widely dispersed. The interpreted categories were also equivocal, because trees with the same color code were included to different health levels.