Is Every Snowflake Different? Science Fiction



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Hi there, everyone, and welcome to Science Fiction.

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You ask the big questions, and we give the big answers.

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To the extreeeeeeeme!

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What? Sorry, are we not being extreme any more?

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BUD E, why don't you give us today's question?

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Today's question comes from Blinky in Helsinki.

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He asks...

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Clouds contain water vapour, which is H2O in gas form.

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If the cloud gets cold enough, this vapour turns to raindrops.

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Oh, rain, rain, rain, rain... I'm so sick of rain.

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When the temperature goes below zero degrees, this vapour turns into

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tiny pieces of ice, the beginnings of snowflakes.

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And they're all the exact same. You've seen one, you've seen 'em all.

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Same. Same. Same. Same. Same.

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-Not true, Professor.

-Huh?

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Each one is an individual crystal

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arranged in a symmetrical pattern with six arms.

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As the snowflake falls to the ground,

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more and more water vapour freezes onto it, and the arms grow.

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Now, the shape of the arms depends on the atmospheric conditions -

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temperature, humidity...

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..seagulls, aeroplanes, UFOs...

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Professor, don't be ridiculous!

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Sorry, love. Sorry. OK, look,

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different conditions. Got it.

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So by the time they hit the ground,

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there's no chance of them being the same, is that it?

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Well, they could be the same in theory, but it's extremely unlikely.

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So there you go, Blinky, the chances of any two snowflakes

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being the same are extremely slim.

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

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# Science fiction! #

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Same. Same. Same. Same. Same. Same. Same. Same.

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Same. Same. Same. Same. Same. Same. Same.

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