That's called visible light.
We detect electromagnetic radiation in a narrow band of frequencies that we call "visible light" with our eyes. We can feel a broader spectrum of electromagnetic radiation that we call "heat". (There are some overlaps.) We can build tools that detect ANY frequency of electromagnetic radiation, and display that in any format we select.
I suppose you mean the visible spectrum, only a small part of the entire electromagnetic spectrum. The visible spectrum is basically all of the colors the human eye can detect.
Light
To detect different wavelengths of the electromagnetic spectrum.
VIsual light
visible light
They can detect both visible light and infrared radiation.
We generate and detect electromagnetic waves that have frequenciesbetween 15 KHz and 300 GHz for a huge number of different purposes.In addition to the ones we're able to generate, other electromagnetic waves occurin nature, with frequencies up to 3,000,000,000,000,000,000 GHz.
x-ray
visible light spectrum
The electromagnetic (EM) spectrum is the entire range of frequencies that electromagnetic radiation can have. The EM spectrum is divided into sections based on the common characteristics that certain frequency ranges have. These sections are, in order from low to high frequency, radio waves, microwaves, infrared waves, visible light (which from low to high frequency is further divided into red, orange, yellow, green, blue, indigo, and violet), ultraviolet waves, X-rays, and gamma rays. You can think of the EM spectrum as an invisible rainbow with visible light being a small part of it. And, like a rainbow, the edges of the divided sections are blurry; i.e. there is no exact frequency where one can say, for example, that this wave is no longer an X-ray, but is instead a gamma ray. it is waves of light in order of their wavelengths and frequencies APEX: A chart of frequencies of light waves.
Electromagnetic radiation is simultaneously both waves and photons. The waves are perpendicular electrical waves and magnetic waves. Photons are massless particles. At lower frequencies/energies the waves are the easier to detect phenomenon, at higher frequencies/energies the photons are the easier to detect phenomenon, but it is always both all the time.