Which of the following is NOT a type of radiation?

Radiation is a form of energy that travels through space and can take several forms, primarily classified into types based on their properties and behavior. Alpha, beta, and gamma radiation are all forms of ionizing radiation that are emitted during radioactive decay processes.

Alpha radiation consists of helium nuclei and is relatively heavy and positively charged. Beta radiation involves electrons or positrons and is lighter than alpha particles, carrying a negative or positive charge, respectively. Gamma radiation is a form of electromagnetic radiation, similar to X-rays, and carries no mass or charge but is highly penetrating.

In contrast, electric fields are related to the forces produced by electric charges and do not fit the definition of radiation. Unlike the other three, electric does not describe a type of radiation but rather a phenomenon related to electric charges and their interactions. This distinction is crucial for understanding the types of radiation in nuclear physics and other scientific fields.