Two engineers at the U.S. Bureau of Standards use a cathode ray oscillograph to test characteristics and effectiveness of various types of sparks used for automobile engine ignition. Washington, D.C.: August 22, 1931.
| px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP29656471
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
no
Property Release:
Right to Privacy:
No
Same folder images:
Restriction:
Editorial use only
1920s1930s19312People2peopleAutoIgnitionAutomobileEngineIgnitionblackandwhitemonochromeCathode-RayOscilloscopeIgnitingInstrumentMeasurementStandardsLaboratoryNationalBureauOfStandardsNationalInstituteOfStandardsAndTechnologyObservingOscilloscopeScientistSparksUSAUnitedStatesWashingtonStateblackandwhiteconcentrationengineerexaminingexperimenthistoricalhistorylaboratorymenpeopleresearchsittingtestingtwopeopleworking
1920s1930s221931AndAutoAutomobileBureauCathode-RayEngineIgnitingIgnitionIgnitionInstituteInstrumentLaboratoryMeasurementNationalNationalObservingOfOfOscilloscopeOscilloscopePeopleScientistSparksStandardsStandardsStandardsStateStatesTechnologyUSAUnitedWashingtonandandblackblackconcentrationengineerexaminingexperimenthistoricalhistorylaboratorymenmonochromepeoplepeoplepeopleresearchsittingtestingtwowhitewhiteworking
Loading