| http://www.w3.org/ns/prov#value | - For example, radiant energy such as visible light or infrared radiation may be directed by suitable means, such as mirrors, parabolic reflectors and focussing lenses, to be focussed as a source of highly concentrated heat on the advancing stream 18? of air-entrained powdered coating material between gun 186 and object 188 in the system of FIGURES l5 and 17.
|
