Revolutions Per Minute, or RPM, is a unit of measurement that indicates the number of complete rotations an object makes in one minute. It is commonly used to describe the speed of rotating machinery, such as engines, motors, and turntables. Higher RPM values typically indicate faster rotation, which can affect performance and efficiency in various applications. In the context of music, RPM is also associated with the speed at which vinyl records are played. Standard speeds for records are 33 1/3 RPM, 45 RPM, and 78 RPM, with each speed corresponding to different types of records. The RPM affects the playback quality and duration of the audio.