Refraction vs Reflection in Sun and Moon Halos
Chapter 1

The science of frozen light

Chapter 2

A gallery of sky rings and dogs

Chapter 3

Whispers of the ancient skies

Chapter 4

Catching a halo in the modern world

YOUR GOAL

Master of The secret rings around the sun and moon

Ch 1 · The science of frozen light
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007skaty Light refraction and reflection in atmospheric ice crystals

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007skaty The Halo Rainbow Order

Red on the inside, red on the inside! Blue shines on the outside of the ring!

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Passing through reveals complexity; bouncing off the surface only mirrors.

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007skaty Circular light halos form around the sun and moon.

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Hexagonal ice in high clouds

007skaty Cirrus clouds between 6,000 and 12,000 meters contain pure ice columns and plates that bend sunlight to create halos.

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The magic of the 22-degree angle

007skaty Your outstretched hand at arm's length perfectly measures this giant atmospheric ring.

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Bounce and Bend
BETA

007skaty Bounce and bend light through ice crystals to discover how sun and moon halos form.

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Fun Fact

Ice prisms: Hexagonal ice crystals in cirrus clouds behave exactly like tiny, floating glass prisms, bending and splitting sunlight into miniature rainbows high in the sky.

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Glossary
halo (noun)
A circular band of light around the sun, moon, or the head of a holy person. A historic 1535 painting depicts these luminous atmospheric rings appearing over the city of Stockholm.

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Gossip

Would you rather sleep under a haloed moon or hike under a haloed sun?

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Quiz

What geometric shape must ice crystals have to successfully bend light into a standard circular halo?

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007skaty Hexagonal ice crystals form the structure of high-altitude cirrus clouds.

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Gossip

Which sky phenomenon is the most magical to witness in person?

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Quiz

At what typical altitude range do the cirrus clouds that host halo-forming ice crystals usually float?

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Quiz

Why is the most common atmospheric halo specifically 22 degrees in radius?

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Quiz

How can you roughly estimate a 22-degree angle in the sky using your own body?

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Quiz

What is the main visual difference between atmospheric phenomena caused by refraction versus those caused by reflection?

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Quiz

What scientific process is primarily responsible for splitting white sunlight into the colors of a halo?

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Quiz

Which color appears on the innermost edge of a 22-degree solar halo?

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Quiz

Why do atmospheric halos have a different color order than standard rain-shower rainbows?

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