It uses radio waves between the range of 2.402 and 2.480 GHz
Visible light
Gateway
The radio frequency portion of the electromagnetic spectrum uses radio telescopes.
Light with a wavelength of 489 nm falls within the blue region of the visible spectrum. It is part of the visible light spectrum. Light with a wavelength of 987 nm falls within the infrared region of the electromagnetic spectrum.
The ozone layer protects us from UV's. UV's are a part of sun's electromagnetic spectrum.
Visible light, which lets humans and other animals see, is part of the electromagnetic spectrum. RF (radio frequency) waves are part of the electromagnetic spectrum. RF transmissions carry radio and television broadcasts. They have the lowest frequency. Microwaves are part of the electromagnetic spectrum. X-Rays are part of the electromagnetic spectrum and have the highest frequency..
The visible light portion of the electromagnetic spectrum would be used to study waves that humans can see. This portion of the spectrum includes colors ranging from red to violet and is the only part of the spectrum visible to the human eye.
mobile phones use microwave radiation
Because we can't see the colors on the spectrum so we have to use a graphto show the colors.
The electromagnetic spectrum spans from the lowly radio signals (1x104 Hz) that we use for terrestrial broadcasting to gamma rays (1x1021 Hz) from the sun! ===================
We primarily use the visible light and radio waves parts of the electromagnetic spectrum. Visible light is essential for imaging and observation, while radio waves are widely used for communication and radar applications.
They just use a harsher light in the electromagnetic spectrum.