colour and light 0.0 / 5 ? OtherCauses of colour mechanismsUniversityOther Created by: leighdavis97Created on: 13-05-18 17:50 what mechanism releases energy as heat or luminescence Dispersed metal ions 1 of 27 metal to metal charge transfer causes colour in what gemstone sapphire 2 of 27 oxygen to metal charge transfer causes colour in what gemstone heliodor 3 of 27 what gemstone is coloured by charge transfer without metal amber 4 of 27 this colour centre causes the colour in fluorite electron 5 of 27 A Hole colour centre causes the colour in what stone smoky quartz 6 of 27 green diamonds are caused by what colour centre vacancy 7 of 27 yellow diamonds are caused by what colour centre vibronic 8 of 27 Nitrogen forms a ...... level Donor 9 of 27 Boron forms a ....... level acceptor 10 of 27 if a material has a large band gap it is colourless 11 of 27 if a material has a small band gap it is opaque 12 of 27 what mechanism causes light to be randomly reflected by particles in a material scattering 13 of 27 a combination of diffraction and interferance causes the colour in what gemstone opal 14 of 27 thin film reflection is the cause of colour in what material labradorite 15 of 27 dislocation of the crystal structure causes what colour in diamond brown 16 of 27 a vacancy in the crystal structure results in what absorption line measurement 741 17 of 27 the vibration of molecules and absorption from a colour centre causes what nanometer measurement 415 18 of 27 2 principle vibration directions showing different colours dichrosim 19 of 27 splitting of white light into is spectral colours where each wavelength is refracted at different angles dispersion 20 of 27 the degree of brightness resulting from reflection of light by a gemstone brilliance 21 of 27 causes the colour of emerald, spinel, ruby and alexandrite chromium 22 of 27 Almandine garnet is coloured by iron 23 of 27 scattering causes the blue colour seen in moonstone 24 of 27 the spreading of light when passed through a slit diffraction 25 of 27 differential selective absorption of light by anisotropic materials pleochroism 26 of 27 light waves that all vibrate in the same direction is said to be ......... polarised plane 27 of 27
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