The frequency of a wave is directly proportional to its speed and inversely proportional to its wavelength. The speed of a wave is the distance it travels in one second. The wavelength of a wave is the distance between two adjacent peaks or troughs of the wave.
The frequency of a wave can be measured using a variety of instruments, including spectrometers, oscilloscopes, and wave meters.
Waves can have a wide range of frequencies. For example, the frequency of sound waves can range from 20 Hz to 20,000 Hz. The frequency of light waves can range from 4 x 10^14 Hz to 8 x 10^14 Hz. The frequency of radio waves can range from 3 x 10^3 Hz to 3 x 10^12 Hz.
The frequency of a wave is an important parameter that can be used to identify different types of waves and to understand their properties.