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We made a camera obscura in a Uhaul!

Dichroic Boro Glass Infinity Mirror Effect Pyramids 001

Dichroic Boro Glass Infinity Mirror Effect Pyramids 001

Birefringence in Calcite: the speed of light in a calcite crystal depends on polarization- the refractive index is different depending on th

Convex lens concentrates sun rays to burn a leaf | Optics | Physics