Nothing quite like a rainbow at the end of a road.
At the core of every pair of Polaroid sunglasses is a unique polarizing filter that blocks glare - reflected light that’s travelling in the hoizontal plane. It’s this polarizing core that stops you from squinting in bright light. It was Edwin Land, Polaroid’s founder, who developed the first synthetic polarizer in the late 1920s. He was fascinated by light. And he was probably aware that if you rotate polarized sunglasses when you’re looking at a rainbow, some of the colours may disappear. From a scientific standpoint that makes sense because the angle of rainbow light is close to the angle of reflection found in polarized sunlight.
And, it’s another way of testing to see if your sunglasses are polarized!
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