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full circle rainbow ring optics physics

Starts With A Bang

Rainbows are actually full circles. A physicist explains

Most of us only ever see a fraction of a full rainbow: an arc. But optically, a full rainbow makes a complete circle. Physics explains why.

A person stands on an abstract surface, casting a large question mark-shaped shadow surrounded by vibrant orange, blue, and purple hues.

What psychedelics can’t explain

Can psychedelics solve the ‘hard problem’ of consciousness? A Johns Hopkins professor explains.

Matthew W. Johnson

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