Of electromagnetic radiation is visible to the human eye. all a narrow portion the white color the dark colo

A narrow portion

Explanation:

Electromagnetic radiation are formed of electromagnetic waves. These electromagnetic waves include radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, gamma rays. From all these different frequencies of lights only visible light is visible from human eyes. Visible light acquire very small section of electromagnetic waves,

So, a narrow portion of electromagnetic radiation is visible to the human eye.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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