Fluoresceins will typically lose more than 50 percent of their light output prior to burnout, as can HID sources. With drops in output of that magnitude, it then becomes essential for maintenance personnel to establish a lamp replacement program based not on burnout but on hours ... Fluorescent lamps specially formulated for plant growth (so called aquot;grow lightsaquot;) emit either full spectrum light or light in wavelengths needed agt;- 19 80 60 LU yj LUCE 40 S? 20 146 Interior Landscape Design.
|Title||:||Interior landscape design|
|Publisher||:||McGraw-Hill - 1991|