Mega Electron-volt

Mega Electron-volt (MeV): Exploring the Energy Unit


Embark on a journey into the realm of energy measurement with Mega Electron-volt (MeV). In this comprehensive guide, we will delve into what MeV represents, its significance in physics, and its applications in understanding the energetic aspects of particles and radiation.

Defining Mega Electron-volt (MeV)

Mega Electron-volt (MeV) is a unit of energy commonly used in physics and nuclear reactions. It is equivalent to one million electron-volts, where an electron-volt is the energy gained or lost by an electron when it moves through an electric potential difference of one volt.

Significance in Physics

MeV is particularly significant in particle physics and nuclear reactions. It provides a convenient scale for expressing the energies of subatomic particles, such as electrons, protons, and neutrons.

Applications of MeV

1. Particle Accelerators: MeV is commonly used to describe the energy levels achieved in particle accelerators, where particles are accelerated to high speeds for experiments.

2. Medical Physics: In the field of nuclear medicine, MeV is used to measure the energy of gamma rays emitted by radioactive substances used in imaging and treatment.


1 MeV = 1,000,000 electron-volts

1 MeV = 1.602 x 10-13 joules


Mega Electron-volt is a versatile unit that bridges the microscopic and macroscopic worlds of physics. Its application in understanding particle energies and its role in various scientific fields make it a crucial unit for researchers and professionals.