The mass of the antileptons is identical to that of the leptons, but all of the other properties are reversed. A third characteristic feature of leptons, in addition to their charge and mass properties, is their intrinsic angular momentum, or spin. Leptons are classified within a larger group of subatomic particles, the fermions, which are characterized by half-integer values of their spin.
Trick and Treat: Halloween in Italy. 28th October 2015. Itâs nearly that spooky time of year again. Although Halloween is renowned around the world as a holiday loved by the Americans (their holidays are celebrated bigger and better than anywhere else) it is becoming more and more popular in Italy.
In March 1977, because of an economic downturn, Republic Day in italy was moved to the first Sunday in June. Only in 2001 was the celebration moved back to June 2, becoming a public holiday again. Like many other Italian holidays, the Festa della Repubblica Italiana has a tradition of symbolic events.