Rainbows are actually full circles. A physicist explains - Big Think

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.

Curious Questions: Are rainbows actually circular? - Country Life

Rainbows are actually full circles. A physicist explains - Big Think

Full Circle Rainbows Happen, But You've Gotta Be At The Right Elevation

Rainbow - Wikipedia

Rainbow

Rainbow Science: How Rainbows Form and How to Find Them

Rainbows are actually full circles. A physicist explains - Big Think

Do you know rainbow is actually a circle?

Rainbow

Physicists crack unsolvable three-body problem using drunkard's walk

Why some physicists really think there's a 'mirror universe' hiding in space-time

Here's why rainbows have a curved or arcing shape

Curiosity - How can you glimpse a full-circle rainbow? Get up high

Is space-time quantum? Six experiments that unpick the fabric of the universe