Since 2007, many diffraction gratings have been distributed worlwide, in more than 25 countries. Two models of diffraction gratings are circulating: one as a slide frame, the other one as an adhesive cap for mobile phone. To better visualize the distribution of them, each grating has been geolocalized from the zip code used for sending.
This document explains, step by step, how to make a small equipment that will adapt a diffraction grating on the objective of your mobile phone.
Sorry, this entry is only available in Français.
Sorry, this entry is only available in Français.
Fifty diffraction gratings are about to be delivered to Ukraine. A warm thank to the private groups from Eastern Europe who realized the importance of these free, easy to use small devices.
