polarised light part 1

polarised light part 2

Here's a new rabbit trail you might want to go down: dichroic. One can look into the science of this, or just appreciate the appearance, or ponder projects.

dichroic / dichroic glass

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Hue, saturation and brightness

(Brown is dark orange. Context also affects perception.)


Why Is A Rainbow Curved? | Newton's Apple

A digestable, five-minute explanation of rainbows, different questions.