Scientists from the Massachusetts Institute of Technology (MIT) needed some very specialised equipment to pull off the feat, as light travels around a million times faster than a bullet.
The team used a camera that collected the light beams at a rate of roughly one trillion frames per second - that's fast enough to produce a slow-motion video of a burst of light traveling the length of a one-litre bottle, bouncing off the cap and reflecting back to the bottle’s bottom.
‘We have built a virtual slow motion camera where were can see photons, or light particles, moving through space,’ explained Ramesh Raskar, Associate Professor of the MIT Media Lab.
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