Frequency measurement is the process of determining how often a repeating event occurs within a specific time frame. It is commonly used in various fields, such as telecommunications, audio engineering, and physics, to analyze signals and waves. The unit of frequency is the Hertz (Hz), which represents one cycle per second. In practical applications, frequency measurement can be performed using devices like frequency counters or oscilloscopes. These tools help visualize and quantify the frequency of signals, enabling engineers and scientists to ensure proper functioning of electronic systems and to study phenomena like sound waves and electromagnetic radiation.