Technology / Telegraphy:Ancient Greek torch telegraphy.The signals were sent by putting the lit torches on two parts of the parapet of the fortification wall. Middle: a magnifying device (dioptre).After watercolour by A.Roloff.Fr.: A.F黵st; Das Weltreich der Technik;vol. 1; Berlin 1923.
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Creative#:
TOP17303131
Source:
達志影像
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RM
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須由TPG 完整授權
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A.ROLOFFANCIENTWORLDANTIQUITYARTURFUERSTBOOKILLUSTRATIONCDCOMMUNICATIONCOMMUNICATIONENGINEERINGCOMMUNICATIONSTRANSMISSIONDIOPTRICSFIREGERMANARTGREECENON-FICTIONOPTICSOUTDOORSOUTSIDEPORTRAITFORMATPRINT(ART)SIGNLANGUAGESIGNAL(SIGN)SMOKESIGNSMOKESIGNALTECHNIQUETELECOMMUNICATIONSTELEGRAPHTELEGRAPHYTELEGRAPHCOMMUNICATIONSTELESCOPETELESCOPICSIGHTTORCH(FLAME)TORCHTELEGRAPHTORCHTELEGRAPHYWATERCOLORWATERCOLOURWIRELESS(TECHNOLOGY)WIRELESSTELEGRAPHY
(ART)(FLAME)(SIGN)(TECHNOLOGY)A.ANCIENTANTIQUITYARTARTURBOOKCDCOMMUNICATIONCOMMUNICATIONCOMMUNICATIONSCOMMUNICATIONSDIOPTRICSENGINEERINGFIREFORMATFUERSTGERMANGREECEILLUSTRATIONLANGUAGENON-FICTIONOPTICSOUTDOORSOUTSIDEPORTRAITPRINTROLOFFSIGHTSIGNSIGNSIGNALSIGNALSMOKESMOKETECHNIQUETELECOMMUNICATIONSTELEGRAPHTELEGRAPHTELEGRAPHTELEGRAPHYTELEGRAPHYTELEGRAPHYTELESCOPETELESCOPICTORCHTORCHTORCHTRANSMISSIONWATERCOLORWATERCOLOURWIRELESSWIRELESSWORLD