The first ever photograph of light as a particle and a wave


Ecole Polytechnique Fédérale de Lausanne


The researchers have captured, for the first time ever, a single snapshot of light behaving simultaneously as both a wave and a stream of particles particle. The experiment is set up like this: A pulse of laser light is fired at a tiny metallic nanowire. This is where the experiment’s trick comes in: The scientists shot a stream of electrons close to the nanowire, using them to image the standing wave of light. While this phenomenon shows the wave-like nature of light, it simultaneously demonstrated its particle aspect as well. As the electrons pass close to the standing wave of light, they hit the light’s particles, the photons.


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