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发帖数: 1994 | 1 Light Can Twist as Well as Spin
Credit & Copyright: M. J. Padgett, J. Leach (U. Glasgow) et al., Royal Society
Explanation: Light is more complicated than we thought. When astronomers measure light, they are usually
concerned with its direction, energy, and spin polarization (sometimes). Recently, however, it has been more
broadly realized that photons can also have orbital angular momentum (OAM), an attribute classically analogous
to the Earth orbiting the Sun as well as spinning on |
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