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The^Bob: Spectrum orientation
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The^Bob: Light_02
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The^Bob: Lake Bafa from Heraklia
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The^Bob: Jay-feather_1984
The^Bob: Jay's feather reflectivity
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The^Bob: Jay_feather_notebook_page_Sep-1981
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The^Bob: Winter_dawn_at_Chiemsee
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The^Bob: Ionian sunset
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The^Bob: Cloudy twilight
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The^Bob: Kuşadası/Samos sunset
The^Bob: Sunset - Lunar eclipse spectrum comparison
The^Bob: Twilight spectral sequence - explanation of "The Blue Hour"
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The^Bob: The Blue Marble seen by Earthshine
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The^Bob: Ozone: Twilit Skies, and (Exo)planet Transits: Figure_5
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The^Bob: Rayleigh_owl_sun
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The^Bob: Uranus and Neptune, HST images and ESO spectra
The^Bob: Water, ice (and fire)
The^Bob: The colour of water
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The^Bob: Real_blue_sea
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The^Bob: Glacier_bay_iceberg-duck
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The^Bob: Raman spectra of water and ice
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The^Bob: Blue_bowl
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The^Bob: Egyptian blue reflectance and fluorescence
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The^Bob: Azurite colour
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The^Bob: Azurite, the purest blue
The^Bob: Azurite and malachite, Arizona
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The^Bob: Amber-bead fluorescence
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The^Bob: Amber, surface fluorescence
The^Bob: Amber bead blue fluorescence
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The^Bob: Lapis-lazuli 254nm 365nm mirrored