As an example, electrons have 50 percent-integer spin and so are fermions that obey the Pauli exclusion principle, when photons have integer spin and don't. The theorem relies on equally quantum mechanics and the theory of Particular relativity, and this relationship concerning spin and studies has been termed "considered one http://cubisme.ir/%da%a9%d9%84%d9%85%d8%a7%d8%aa-%da%a9%d9%84%db%8c%d8%af%db%8c-%d8%af%d8%b1-%d8%af%d8%a7%d9%85%d9%86%d9%87-%d9%87%d8%a7%db%8c-%d8%b3%d8%b7%d8%ad-%d8%a8%d8%a7%d9%84%d8%a7-%d8%b9%d9%85%d9%88%d9%85%db%8c/