Instrument Function
The finite Fourier Cosine Transform of an Apodization Function, also known as an Apparatus Function.The instrument function 
corresponding to a given Apodization Function 
is then given by
See also Apodization Function, Fourier Cosine Transform
- Lakshmi Star
- Lal's Constant
- Laman's Theorem
- Lambda Calculus
- Lambda Function
- Lambda Group
- Lambda Hypergeometric Function
- Lambert Azimuthal Equal-Area Projection
- Lambert Conformal Conic Projection
- Lambert Series
- Lambert's Method
- Lambert's Transcendental Equation
- Lambert's W-Function
- Lamina
- Laminated Lattice
- Lam's Problem
- Lamé Curve
- Lamé Function
- Lamé's Differential Equation
- Lamé's Differential Equation (Types)
- Lamé's Theorem
- Lancret Equation
- Lancret's Theorem
- Lanczos Approximation
- Lanczos Sigma Factor