Testing motorcar horns. Researchers from the National Physical Laboratory assessing the quality of sound from various types of motorcar horns. Photographed in 1929.
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Creative#:
TOP03229099
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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1900S1920S192920TH30S40SASSESSASSESSINGAUTOMOBILEAWARENESSBLACK-AND-WHITEBRITAINBRITISHCARCAUCASIANCENTURYCOMPARINGENGINEERINGENGLANDENGLISHEQUIPMENTFORTIESFREQUENCYHISTORICALHISTORYHISTORYHOOTERHORNHUMANINDUSTRIALINDUSTRYKINGDOMLABORATORYLANDLOUDNESSMALEMANMEASURINGMONOCHROMEMOTORCARNATIONALNOISEOFOUTDOORSOUTSIDEPEOPLEPERSONPHYSICALPHYSICISTQUALITYRESEARCHRESEARCHERROADROADROADROADSIDESAFETYSCIENCESOUNDSQUEEZINGTECHNICIANTECHNOLOGICALTECHNOLOGYTESTTESTINGTHIRTIESTRANSPORTTRANSPORTATIONUKUNITEDVEHICLEWHITE
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