Plain silicon grating reveals a hidden 'twist' in light from electron beams
In 1953, two physicists showed that an electron beam skimming past a grating emits light whose color depends only on the electron's speed and the grating's spacing. Known as Smith-Purcell radiation, this phenomenon has become a useful tool for building compact, tunable light sour
In 1953, two physicists showed that an electron beam skimming past a grating emits light whose color depends only on the electron's speed and the grating's spacing. Known as Smith-Purcell radiation, this phenomenon has become a useful tool for building compact, tunable light sour This story matters for Science & Discovery readers tracking inventors. Reported by phys.org. Read the full original at the source link below.
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