The human body emits various types of electromagnetic waves, primarily in the form of thermal radiation. The emission of thermal radiation is a natural consequence of the body's temperature, as all objects above absolute zero (-273.15 degrees Celsius or 0 Kelvin) emit electromagnetic radiation according to their temperature.
The types of electromagnetic waves emitted by the human body fall within the infrared range of the electromagnetic spectrum. Specifically, the human body primarily emits far-infrared radiation (FIR). Far-infrared radiation has longer wavelengths than visible light and is often referred to as "heat radiation" because it is associated with the thermal energy emitted by objects at normal temperatures.
It's important to note that the intensity of the far-infrared radiation emitted by the human body is relatively low compared to other sources in the environment. Additionally, the human body also reflects and absorbs electromagnetic waves from the surrounding environment, including visible light.
While the human body predominantly emits far-infrared radiation, it does not emit other types of electromagnetic waves such as visible light, ultraviolet (UV) radiation, X-rays, or gamma rays naturally. The emission of these higher-energy electromagnetic waves typically requires external sources, such as exposure to sunlight or medical procedures involving X-rays or gamma rays.