Is the Sky Blue Because It Reflects the Sea? Science Fiction



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Welcome to Science Fiction -

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the TV show which stamps out superstitions...

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Using hard scientific evidence. Oh, look, a leprechaun!

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BUD-E, what's today's question, please?

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Today's question is from Walter in Gibraltar.

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Sunlight is energy, which travels in waves all from the sun

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and helps us to see the world around us.

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This light is made up of an entire spectrum of colour, like a rainbow.

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Red, orange, yellow, pink, Sleepy, Happy, Dopey...

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Each colour within the spectrum has a wavelength of different size.

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Wavelength - is that how long a person can keep waiting for?

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For example, orange and red wavelengths are quite long.

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Violet and blue are short.

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Fair enough. Everyone's different.

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As the sun's light approaches Earth, it hits our atmosphere

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and the waves scatter in different directions.

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The first to get scattered are the short ones.

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The blue ones. That's why the sky is blue.

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Come here, Doctor. The sky isn't always blue.

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Well, at sunset, the light has more atmosphere to travel through.

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More waves get scattered, including orange and red ones.

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I love a good sunset, I do. It's very rosemantic.

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So the sky being blue is nothing to do with reflecting the sea.

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So, that's just a load of old science fiction.

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# Science fiction. #

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When I was a small boy, my mammy told me

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don't stare into the sun or I'll go stupid.

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But I still did.

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