X-Nico

unusual facts about heliograph


Heliostat

Heliograph, a similar non-tracking device, used for communication


Camberley Obelisk

This theory is supported by a letter written by Norris, dated 3 June 1778, in which he notes: "Did this day heliograph intelligence from Dr Franklin in Paris to Wycombe".

St Columba's High School, New South Wales

This is one of a heliograph array of 96, 13.7-m dishes that circled the present location of the Compact Array.


see also