Revolutions per Second (rps)
Revolutions per second (rps) measures the number of complete rotations or cycles an object makes in one second. While the previous units describe frequency mainly for waves or signals, rps is widely used in mechanics, engineering, and rotational dynamics. Unlike hertz, which can describe any periodic phenomenon, revolutions per second (RPS) specifically applies to rotational motion. Its historical use dates back to early clockwork mechanisms, mills, and engines, evolving into modern applications such as motor speed measurements, centrifuges, and turbines. RPS provides a tangible understanding of rotational speed, making it valuable for both practical engineering tasks and educational purposes.
Kilohertz (kHz)
The kilohertz, symbol kHz, is equal to 1,000 hertz. Building on the foundation set by the hertz, this unit was introduced to measure higher-frequency signals, such as radio waves, audio frequencies, and electronic circuits. Kilohertz is particularly common in broadcasting, audio engineering, and communications. The unit simplifies large frequency measurements, allowing engineers and scientists to describe thousands of cycles per second concisely and accurately. Its widespread adoption facilitates precise communication of frequency data in both professional and educational contexts.