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Supersonic Santa

How Father Christmas delivers presents—the physics

By Katy Sheen  

screen-shot-2016-12-19-at-17-35-59It’s an age-old question—how does Father Christmas manage to deliver presents to children across the world in just one night, fit down the chimney, never seem to age and arrive without being seen or heard? As a little girl, I can recall puzzling over these mysteries, so much so that one Christmas Eve I left a card for Santa, questioning why he never got any older. Though rather overwhelmed when I received a reply from the great man himself, my rational mind was not satisfied with the answer I received, scrawled in shaky…

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