Frequency itself does not create a visible wave. However, the frequency of a wave can affect its characteristics and how it interacts with various media.
Visible light, for example, is a form of electromagnetic radiation that consists of waves with frequencies between approximately 400 and 700 terahertz (THz). These waves fall within the range of frequencies that our eyes are sensitive to, allowing us to perceive them as different colors.
When visible light waves interact with objects or pass through certain media, such as a prism or a water droplet, they can be refracted, reflected, or diffracted. These interactions can result in the separation of the different wavelengths (colors) of light, which we perceive as a spectrum or rainbow.
So while frequency itself does not create a visible wave, it is a fundamental property of waves, including those within the visible spectrum, that determines their behavior and how we perceive them.