Sub-topic 1
2025 · National Semifinal
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Wavelength from a diffraction grating with oblique incidence (second order)
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Sub-topic 2
2025 · National Semifinal
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Wavelength from a diffraction grating with oblique incidence (second order), opposite-side geometry
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Sub-topic 3
2026 · National Quarterfinal
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Symmetry of incidence and emergence angles at minimum deviation through a prism
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Sub-topic 4
2026 · National Final
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The abbe number as a measure of optical glass dispersion
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Sub-topic 5
2025 · National Final
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Angle to the first dark ring of an airy diffraction pattern from a circular aperture
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Sub-topic 6
2023 · National Final
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Thin-film interference as the cause of iridescent heat-tint colours on oxidised steel
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Sub-topic 7
2003 · National Semifinal
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Polarization of light restricting oscillation to a single plane
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Sub-topic 8
2013 · National Quarterfinal
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Colour produced by additively mixing blue and red light
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Sub-topic 9
2013 · National Quarterfinal
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Colour produced by additively mixing red and green light
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Sub-topic 10
2013 · National Quarterfinal
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Colour produced by additively mixing cyan and red light
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