# Breakthrough as new form of light discovered

1. Context: Scientists have discovered a new form of light
2. New form of light: The angular momentum of each photon (a particle of visible light) takes only half of this value
3. Earlier: In all forms of light, the angular momentum would be a multiple of Planck’s constant
4. Planck’s constant: The physical constant that sets the scale of quantum effects
5. Experiment by: William Rowan Hamilton and physicist Humphrey Lloyd
6. Effect: Creates impact on fundamental understanding of light, enable strange new possibilities of particles whose quantum numbers were fractions of those expected
1. Context: Scientists have discovered a new form of light
2. New form of light: The angular momentum of each photon (a particle of visible light) takes only half of this value
3. Earlier: In all forms of light, the angular momentum would be a multiple of Planck’s constant
4. Planck’s constant: The physical constant that sets the scale of quantum effects
5. Experiment by: William Rowan Hamilton and physicist Humphrey Lloyd
6. Effect: Creates impact on fundamental understanding of light, enable strange new possibilities of particles whose quantum numbers were fractions of those expected
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