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Signal lamp


Signal lamp: A signal lamp is a visual signaling device for optical communication. Modern signal lamps are a focused lamp which can produce a pulse of light. In large versions this pulse is achieved by opening and closing shutters mounted in front of the lamp, either via a manually operated pressure switch or, in later versions, automatically. With hand held lamps, a concave mirror is tilted by a trigger to focus the light into pulses. The lamps were usually equipped with some form of optical sight, and were most commonly used on naval vessels and in airport control towers.

Printed dictionaries and other books with definitions for Signal lamp

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Google previewRailway Signaling and Communications (1913)

The signal lamp is a small thing, prosaic, only a link in the chain, but nevertheless it must do its work, and do it properly. That it does do the work for which it is intended is to the credit of the railway supply manufacturer.” In other words, the ...

Google previewThe Railway Age (1904)

The ordinary signal lamp is an ineificient device and but a small part of the ...

Google previewThe Railway Signal Dictionary (1912)

An Illustrated Vocabulary of Terms which Designate American Railway Signals, Their Parts, Attachments and Details of Construction, with Descriptions of Methods of Operation and Some Illustrations of British Signals and Practice by Railway Signal Association, Braman Blanchard Adams, Rodney Hitt, Arthur David Cloud, Harold Hoyt Simmons

Distant Signal Lamp. Western. Chicago & North- Fig. 2691. Non-Sweating- Balanced Draught Lamp. The Adams & Wcstlakc Company. ADLAKE NON- SWEATING BALANCED DRAUGHT. Adlnke non-sweatiug balanced draught lamps are ...

Google previewIllustrated Engineering Dictionary (2012)

Bildwörterbuch Maschinenbau und Elektrotechnik by Heinz K. Flack, Georg Möllerke

general-purpose, multi-purpose Meissel chisel, tool meisseln to chip Meisterschalter master controller Meldelampe indicating lamp, signal lamp, pilot lamp melden to signal Meldung message Membran membrane, ...

Google previewThe Wordsworth Dictionary of Abbreviations and Acronyms (1997)

by Rodney Dale, Steve Puttick

SL signal lamp; signal light SI sluice SM sloping masonry (OFD) Smy smithy SN Scientific Network SP sewer pipe; signal post; spur Sp SECTION 8.1 229.

Google previewThe car builders' dictionary (1906)

an illustrated vocabulary of terms which designate American railroad cars, their parts, attachments, and details of construction, with definitions and illustrations of typical British practice in car construction. Six thousand three hundred and forty-four illustrations. 1906 ed. Comp. for the Master car builders' association by Master Car Builders' Association

Signal Lamp or Signal Light. Figs. 3256-3258. A name applied to lanterns of extra power and quality of several kinds, ...

Google previewThe Visual Dictionary of Food & Kitchen - Food & Kitchen (2009)

signal lamp Light showing that the appliance is on. body Part of the kettle that holds the water to be boiled. spout Small tapered ...

Google previewEncyclopedia of Survival Techniques (2008)

by Alexander Stilwell

rearms and ammunition Need map and compass Need signal lamp with battery and radio Indicate direction to proceed Am proceeding in ...

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