Answer:
[tex]3.0 \cdot 10^8 m/s[/tex] (speed of light)
Explanation:
Electromagnetic waves are oscillations of the electric and the magnetic field that occur in a plane perpendicular to the direction of travelling of the wave.
All electromagnetic waves travel in a vacuum at the same speed, whose value is:
[tex]c=3.0\cdot 10^8 m/s[/tex]
And this value is called speed of light.
Electromagnetic waves are classified into 7 different types, depending on their wavelength/frequency. From highest to lowest frequency, we have:
Gamma rays
X-rays
Ultraviolet radiation
Visible light
Infrared radiation
Microwaves
Radio waves
