전자기파가 · 전자기파를
electromagnetic wave
Example
휴대폰은 전자기파로 정보를 주고받아요.
Cell phones send and receive information using electromagnetic waves.
Word parts
전 electric+자 magnetic+기 energy+파 wave
Literally 'electric-magnetic wave'.
Good to know
Everyday Korean shortens it to 전자파, as in worries about 전자파 from phones.