The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
Transmitting or reflecting optical element with regularly spaced scribes or grooves
on its surface, designed to use phase-dependent constructive
interference to separate light by dispersing it at wavelength-dependent
The term "diffraction grating" was found in the following pages: