rcF

RCF is an acronym that can refer to several concepts across different fields. The most common uses are a scientific term in centrifugation, a financial instrument, and an Italian audio equipment manufacturer.

Relative centrifugal force (RCF) describes the acceleration experienced by a sample in a centrifuge relative to Earth's gravity. It is calculated as RCF = 1.118 × 10^-5 × r × N^2, where r is the rotor radius in centimeters and N is the speed in revolutions per minute. RCF standardizes conditions across rotor sizes and enables comparison of results. Many protocols specify RCF rather than RPM.

Notes: The exact g-force depends on rotor geometry; protocols often report both RCF and time.

Revolving credit facility (RCF) is a line of credit from lenders that can be drawn, repaid, and re-borrowed up to a set limit. Interest accrues on drawn funds; unused portions may incur a commitment fee. RCFs support working capital, letters of credit, and short-term funding, and they can be secured or unsecured depending on the borrower and market conditions.

RCF, or RCF Group, is an Italian manufacturer of professional audio equipment, including loudspeakers and amplifiers. The company serves applications in live sound, installed systems, and cinema, with a global customer base and a long-standing presence in the professional audio industry.