[Editor’s note: This is reprinted from The Conversation, 18 Dec 2013. The original article is authored by Michael Rose and Jonathan Borwein.]
The warmth on your face, the scenic view outside — such delights are delivered to you by countless photons from the sun. But believe it or not, these photons move in much the same way as an inebriated person wandering home from the pub, or the initial whiff of coffee as you open a bag of beans.
Let me explain.
Travelling at the fastest speed known to physics, these photons crossed from the sun to the Earth in
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