X | Y | Z |
Opaque body | Light source | Shadow |
X | Y | Z |
Light source | Opaque body | Light source |
X | Y | Z |
Light source | Opaque body | Shadow |
X | Y | Z |
Opaque body | Shadow | Light source |
Luminous bodies | Non-luminous bodies |
Firefly | Housefly |
Luminous bodies | Non-luminous bodies |
Glow-worm | Earthworm |
Luminous bodies | Non-luminous bodies |
Metal spoon | Torchlight |
Luminous bodies | Non-luminous bodies |
Star | Moon |
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