Science Quiz: On unusual properties of light


Rayleigh scattering is the effect that partly polarises the light in the sky; the image on the right shows only polarised blue light. Many insects use this polarisation pattern to find their way. Light pollution is not polarised, confusing them. Photo: Wikipedia

Rayleigh scattering is the effect that partly polarises the light in the sky; the image on the right shows only polarised blue light. Many insects use this polarisation pattern to find their way. Light pollution is not polarised, confusing them. Photo: Wikipedia

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