Energy, Heat & MotionOptics
Why the Sky Is Blue
Air scatters blue light far more than red, and sunsets are the leftovers
Sunlight is white and air is clear. So who painted the whole sky blue, and why does the paint turn orange every evening?
You'll find out
- Where the sky's light really comes from
- Why it isn't violet instead
- A planet where sunsets are blue
Why it matters
One rule colors the noon sky, every sunset and the white of clouds. Learn it once and the whole sky makes sense.
Play this lesson
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