How do the different colors and notes differ from each other?

Each color and each sound has its own, strictly defined radiation frequency (or wavelength). This is how they differ from each other. Only the color perceived by the human eye is created by electromagnetic radiation with frequencies ranging from 405 trillion vibrations per second (for red) to 680 trillion vibrations per second (for violet). And the sound perceived by the human ear is created by mechanical vibrations with frequencies from 16 vibrations per second (low sounds) to 20,000 vibrations per second (high sounds). If the generated sound vibrations are harmonic in nature, then they speak of musical sounds that are recorded using certain signs – notes. For example, “before” the first octave has a frequency of 131 vibrations per second, and “before” the second octave has a frequency of 261 vibrations per second.