Protons are subatomic particles having electronic charges of +1 of the elementary charges. They are located in nucleuses of all atoms but are additionally stable on their own and have second identities as well, just like the hydrogen ions. Protons were discovered in 1918 by a man known as Ernest Rutherford. Ernest came to discover that whenever alpha elements were shot into the nitrogen gas, his scintillation detectors displayed signatures of hydrogen nucleus. He later discovered that the origins of hydrogen were generated by nitrogen and for that reason, hydrogen nucleus were present in nitrogen. Consequently, Rutherford proposed that hydrogen nucleus, additionally known to have atomic numbers of 1, were elementary particles. He then decided to give them the name protons, which originated from the Greek word ‘proto’, that means ‘first’.
Near the beginning of 1920 immediately after electrons were discovered, Ernest and some other physicists conducted quite a number of tests, transforming one atom to another. In all cases, hydrogen nucleuses were released in the procedure. It was evident that those hydrogen nucleuses had important roles in the structure atoms. In the late 1920s, physics started to regularly refer to the nucleuses of hydrogen as ‘protons’. That word was invented by Ernest and appeared in print for the first time in 1920.

