Psionics is the SF imaginary science of paranormal mental powers (E.S.P. and P.K.). Unlike magic and supernatural powers, psionics follows a scientific perspective, so a mind-reading spell and psionic telepathy evoke different ambiences. The term 'psionics' derives from the term 'electronics' : 'electronics' is the study and control of the messenger particles of electricity, and psionics is the study and control of the messenger particles of paranormal mental powers.