A method of estimating the interior illuminance from window daylighting at three locations within a room, based on empirical studies.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
lumen method, flux method
A procedure in lighting design used to determine the number and types of lamps or luminaires required to provide a desired average level of illumination on a work plane; takes into account both direct and reflected light flux.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.