Here's the breakdown:
* Electronvolt (eV): This is the fundamental unit of energy in particle physics. It represents the amount of energy gained by a single electron when it moves through an electric potential difference of one volt.
* Megaelectronvolt (MeV): One MeV is equal to one million electronvolts (1 MeV = 1,000,000 eV).
* Gigaelectronvolt (GeV): One GeV is equal to one billion electronvolts (1 GeV = 1,000,000,000 eV).
The key difference is the scale:
* MeV is used for energies in the range of millions of electronvolts, typical for nuclear processes and low-energy particle physics.
* GeV is used for higher energies, in the billions of electronvolts, which are common in high-energy physics, like particle accelerators.
In summary:
* MeV is smaller than GeV.
* GeV is 1000 times larger than MeV.
Think of it like kilometers and meters – both measure distance, but one is a thousand times larger than the other.
