
196 Illuminating Spaces
can also be found on the market but such systems thus far have been used more
widely in applications where not much light is required (gardens or footpaths) as they
are easy to install and maintain, and provide a cheaper alternative to wired lamps.
The proposals discussed above show that each situation must be examined sep-
arately and the special requirements for every case must be evaluated. Different
technologies offer different features and advantages so one must carefully con-
sider the specic needs before choosing a technology and an illumination system.
8.4 Nonvisible Applications
Although the nonvisible emissions ...