| 1. | See the table in Fundamental interaction and the discussion of its weakness there.
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| 2. | Gravity is the weakest of the four fundamental interactions of nature.
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| 3. | Therefore, the fundamental interactions between THz radiation and semiconductors are receiving increasing attention.
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| 4. | :There are four known fundamental interactions : gravity, electromagnetism, strong nuclear and weak nuclear.
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| 5. | Also, the weak interaction is the only fundamental interaction that breaks charge parity symmetry.
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| 6. | There are five fundamental interactions, magic being the fifth.
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| 7. | Molecular and quantum physics show that the electromagnetic force is the fundamental interaction responsible for contact forces.
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| 8. | Cachazo's research concerns Quantum Field Theory, the underlying theory describing fundamental interactions of particles and space-time itself.
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| 9. | The combination of CPT is thought to constitute an exact symmetry of all types of fundamental interactions.
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| 10. | All fundamental interactions of elementary particles, with the exception of the weak interaction, are symmetric under parity.
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