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no idea
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which one's infra rays wavelength are longer, sun or human body?
Infra rays, also known as infrared radiation, are a type of electromagnetic radiation with a longer wavelength than visible light. They are invisible to the human eye but can be felt as heat.
The Sun produces infra rays as a form of heat through nuclear fusion reactions in its core. These rays travel through space and reach Earth, where they contribute to the planet's overall temperature and climate.
The wavelength range of infra rays produced by the Sun is typically between 750 nanometers to 1 millimeter.
In general, infra rays are not harmful to the human body. However, excessive exposure to high levels of infrared radiation can cause burns or damage to the skin and eyes. It is important to limit exposure and take precautions when working with infrared sources.
The human body emits infra rays through the process of thermoregulation, where heat is radiated from the body to maintain a constant internal temperature. The skin and internal organs also emit infrared radiation as a byproduct of metabolic processes.