Reflectance values express the percentage of light that is reflected back from a surface, the difference having been absorbed or transmitted by the surface. Reflectances of room surfaces are used in determining coefficient of utilization values for luminaires.
The last three lines show you how to define your own awk function. The format is simple -- type function, then the function name, and then the parameters separated by commas, inside parentheses. After this, a { } code block contains the code that you'd like this function to execute.
FAK Definition & Examples. FAK stands for Freight All Kinds. Essentially, FAKs were set up to help shippers who ship items at multiple freight classes ship all those shipments at the same class. It was implemented to facilitate an easier pricing and billing communication between the shipper and the carrier.