Diffraction effects are more noticeable in radio waves than in visible light due to the longer wavelengths of radio waves, which allow for easier measurement of standing wave patterns. When light reflects off a mirror perpendicularly, the expected interference oscillations between constructive and destructive interference are not visible because the wavelength of visible light is much shorter, making such effects difficult to observe without specialized equipment. The phenomenon of colored reflections in thin oil films is an example of interference, as the oil film's thickness is comparable to the wavelength of light, allowing for observable effects. The discussion highlights the challenges in observing interference in visible light due to its short wavelength compared to radio waves. Understanding these differences is crucial for studying wave behaviors across different frequencies.
