The positron is a type of beta particle (Î² +), the other beta particle being the electron (Î² â) emitted from the Î² â decay of a nucleus. An example of positron emission (Î² + decay) is shown with magnesium-23 decaying into sodium-23:
Transport during the Industrial Revolution changed very quickly, it went from walking to places to getting the train. The growth of travel increased as soon as things like tr â¦ ains were invented.
But industrialization requires a transportation system that allows the efficient movement of raw materials to factories and of finished goods to markets. There was no such system in the United States in its early years, and thus there was no domestic market extensive enough to justify large-scale production.