In physics,
frequency refers to the number of times a repeating event occurs in a given amount of time. It's usually used to describe wave-like phenomena, such as sound waves, light waves, or any type of vibration.
- The unit of frequency is the hertz (Hz), which is equal to one cycle (or wave) per second.
- For example, if a sound wave completes 100 cycles in one second, its frequency is 100 Hz.
- Frequency is inversely related to period, which is the time it takes for one complete cycle to occur. The formula is:
\[
\text{Frequency} (f) = \frac{1}{\text{Period} (T)}
\]
Where:
- T is the period (time for one cycle)
So, the higher the frequency, the more cycles occur in a given time period. For instance, high-frequency waves like light have many cycles per second, while low-frequency waves, like sound in the bass range, have fewer cycles per second.