 
 <prompt> Wetin eyes dey help people do? Based on di question wey dey above, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: "The net quality of a ground reflection dey depend on topography of the surface. If the surface get small small roughness pass the wavelength, we dey for specular reflection regime, and the receiver go see both the real antenna and the image of the antenna wey dey under the ground because of reflection. But if the ground get roughness wey no be small compared to the wavelength, reflections no go dey coherent but go dey shifted by random phases. With shorter wavelengths (higher frequencies), na generally the case be that." 