controlled beam of sunlight to a distant station to be used as a marker for geodetic survey work, and was suggested as a means of telegraphic communications. [ ] this is the first reliably documented heliographic device, [ ] despite much speculation about possible ancient incidents of sun-flash signalling...
trading map this is google map of global trade house (l.l.c) address:,dubai,dubai - u.a.e. if you find 'can not find' or error address, please submit another address using the form in the map, then search again. other companies gulf falcon technical equipment co....