From the figure, what is the wavelength of the wave? Does it matter whether you measure the wavelength of the electric field or the magnetic field? What is the frequency of the wave? 3. Suppose you double the wavelength of the wave. What happens to the speed of the wave? What happens to its frequency? What is the frequency of the wave? 3. Suppose you double the wavelength of the wave. What happens to the speed of the wave? What happens to its frequency