Physicists Modify Double-Slit Experiment to Confirm Einstein’s Belief
In this modified double-slit experiment, a laser beam hits a screen with two small pinholes. As a particle, light goes through one of the pinholes. Through a lens system, the light is then imaged onto two detectors, where a certain detector measures only the photons, which went through a particular pinhole. In this way, Afshar verified the particle nature of light. As a wave, light goes through both pinholes and forms a so-called interference pattern of bright and dark fringes.
“Afshar’s experiment consists of the clever idea of putting small absorbing wires at the exact position of the dark interference fringes, where you expect no light,” Knoesel said. “He then observed that the wires do not change the total light intensity, so there are really dark fringes at the position of the wires. That proves that light also behaves as a wave in the same experiment in which it behaves as a particle.”
Light is a strand. Bloody hell, I could have used a blog even just ten years ago when I was reading quantum physics. I had some tantalizing questions that would have made very interesting experiments!
Note: I don’t know what’s wrong with this post. I’ve examined the HTML. It’s fine. WordPress’s Visual window shows it’s fine. Preview shows it’s fine. Yet when it’s posted, I get everything highlighted as if it’s just one big link. Watch. I bet this note will change that to put egg on my face. Or not.