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iTryCombs t1_jdcjqxz wrote

This is a good way to sus out a fake picture of a rainbow.

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K1Playz t1_jdcpoh1 wrote

the biome changed

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sbvp t1_jdchiyk wrote

Its part of the same optical illusion that creates the rainbow you see. The sky is not actually lighter on the inside of the rainbow, it just looks like it is

edit: i added the word “actually” for added clarity.

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BillyGerent t1_jdcsuzz wrote

It actually is brighter. The dark region beyond the rainbow is called Alexander's Band. Good explainer of the physics

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sbvp t1_jdcwx1b wrote

The video confirms what i was saying. I am confused

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BillyGerent t1_jdd01xv wrote

Rainbows are not simple! It says that white sunlight is reflected back from inside/under the rainbow, but not above/outside the rainbow (until we get to the colour-inverted secondary rainbow).

[Edit: deleted repeated info about Alexander's Band]

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BillyGerent t1_jdcs15t wrote

White light is reflected back to the observer below the rainbow following a single lossy reflection from the back of each raindrop, so it is brighter here.

Above the secondary rainbow, white light is reflected back to the observer following a more lossy double reflection, so it is not as bright.

Between the primary and secondary rainbow, no light can be reflected back to the observer by the back of the raindrop, forming Alexander's Band.

A great explainer

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AF9005 t1_jdceo38 wrote

It's like a Border.

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SpawnDC5 t1_jdcnfj9 wrote

But what's it taste like?

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edelweiss45 t1_jdedouf wrote

Not reflected, but REFRACTED. The light bends and make the brighter effect.

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