noun
electromagnetic wave
Physics term for waves of electric and magnetic fields, such as radio waves, microwaves, visible light, X-rays, and gamma rays.
電磁波には、電波や光、X線などが含まれる。
Electromagnetic waves include radio waves, light, X-rays, and so on.
電子
Microwave ovens use electromagnetic waves to heat food.
光 is the everyday word for visible light, which is also a type of 電磁波.
Compound of 電 (electricity) + 磁 (magnetism) + 波 (wave), directly translating the Western scientific term 'electromagnetic wave'.