An example of a natural source of electromagnetic radiation is the Sun. The Sun emits a wide range of electromagnetic radiation across the entire electromagnetic spectrum. This radiation includes visible light, ultraviolet (UV) rays, infrared (IR) radiation, and other forms of electromagnetic waves.
Visible light, which is essential for our vision, is a specific range of electromagnetic radiation emitted by the Sun. Ultraviolet rays, which are responsible for causing sunburns and can have harmful effects on our skin and eyes, are also emitted by the Sun. Infrared radiation, which we perceive as heat, is another form of electromagnetic radiation emitted by the Sun.
Apart from the Sun, there are other natural sources of electromagnetic radiation as well. For instance, cosmic rays originating from sources in outer space, such as distant stars or active galactic nuclei, can reach Earth and contribute to natural background radiation. Radio waves emitted by celestial bodies, such as pulsars or quasars, are also examples of natural electromagnetic radiation.
Overall, natural sources of electromagnetic radiation are diverse and can be found throughout the universe, with the Sun being one of the most significant sources of electromagnetic waves that affect life on Earth.