[[wiki-architecture]] · [[Buildings and Structures]] · [[ARCHITECTURE]] · [[000]] # Amplification factor The amplification factor, also called gain, is the extent to which an analog amplifier boosts the strength of a signal. Amplification factors are usually expressed in terms of power. The decibel (dB), a logarithmic unit, is the most common way of quantifying the gain of an amplifier. In general an amplification factor is the numerical multiplicative factor by which some quantity is increased. In structural engineering the amplification factor is the ratio of second order to first order deflections. In electronics the amplification factor, or gain, is the ratio of output to input in an amplifier. In vacuum-tube theory the amplification factor (μ) of a triode has a more specific meaning: it is the ratio of the change in plate voltage to the change in control-grid voltage required to produce the same change in plate current. This parameter is commonly determined from families of plate-current characteristic curves as described in Vacuum tube characteristics. In numerical analysis the amplification factor is a number derived using Von Neumann stability analysis to determine stability of a numerical scheme for a partial differential equation. == References == - [[Professional Practice/Codes & Standards/National Building Code of India/Part 06 - Structural Design/Section 5A - Plain and Reinforced Concrete]] - [[Professional Practice/Construction Management/Cost Estimation]] - [[Interior Architecture/Renovation and Conservation]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 08 - Building Services/Section 5B - Escalators and Moving Walks]] - [[Building Construction/Structural Systems/Foundation Systems]] - [[Landscape]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 06 - Structural Design/Section 7A - Prefabricated Concrete]] - [[Professional Practice/Project Delivery Methods]] - [[Building Construction/Structural Systems/Steel Structures]] - [[Interior Architecture]] "Developments in Tall Buildings 1983". ISBN 0-87933-048-1. Page 489. "Numerical Computation of Internal & External Flows". ISBN 978-0-7506-6594-0. Page 296.