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Light reflection off coloured surfaces

David Pungert (2018) Light reflection off coloured surfaces. MSc thesis.

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    Abstract

    In the theoretical part of my thesis, I first present geometrical, wave and quantum models of light. I describe fluorescence, reflection, absorption, Rayleigh scattering of light and utilised light sources. I further describe the structure of the human eye, the photoreceptors inside, their spectral sensitivity and the correlation between the light spectrum and the observed colour. I expose the difference between the physical definition and everyday use of terms black, white and grey body. I describe two systems for quantitative analysis of colour and problems that appear in digital and physical colour reproduction at printing. I finish the theoretical part by describing the instruments that I use for measuring the temperature of tungsten filament and light spectra of light bulbs. In the experimental part of my thesis, I calibrate the spectrometer and measure the spectrum of incident light and light that has reflected off a coloured surface. By using the measured spectrum, I analyse the correlation between incident and reflected light and calculate the surface reflectance. For demonstration of practical use, I predict the colour of an object by knowing incident light and the applied pigment. I revive curriculum for primary and high school science and physics classes. Then I study incomplete perceptions and misconceptions about colour detection among high school students. I design an experiment in which different colours of light illuminate different coloured objects. I test the effectiveness of this experiment for improving understanding of colour detection in high school.

    Item Type: Thesis (MSc thesis)
    Keywords: colour, pigment, human eye, light, light spectrum, light sources, misconceptions, experiment
    Number of Pages: 100
    Language of Content: Slovenian
    Mentor / Comentors:
    Mentor / ComentorsIDFunction
    izr. prof. dr. Bojan GolliMentor
    doc. dr. Gregor BavdekComentor
    Link to COBISS: http://www.cobiss.si/scripts/cobiss?command=search&base=50126&select=(ID=12155465)
    Institution: University of Ljubljana
    Department: Faculty of Education
    Item ID: 5399
    Date Deposited: 01 Oct 2018 10:27
    Last Modified: 01 Oct 2018 10:27
    URI: http://pefprints.pef.uni-lj.si/id/eprint/5399

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