This was featured on BBC earlier today, and honestly I found the footage to be mesmerizing:
A special camera imaging system built to produce images at a dizzying one trillion frames per second. That is so slow that light appears as pulses of photons traveling in a line. The video shows a laser pulse traveling through a coke bottle, which at this rate appear as a 'bullet' of light floating through the air.
That is really, really cool. Reminds me of how the speed of light is one of those things that's always hard to imagine - but here it is actually captured
