The advance in Artificial lighting with LED invention in 1962 only for indication but commercially marketed in 1994 for illumination is overshadowed by the various lamps and lanterns of kerosene from 1866 Cupping Lamp by Arnold &Sons to Aladdin's mantle lamps, wick lamps, Petromax pressure lamps by Aida, to LNG gas lamps, battery powered lamps and now Solar LED lamps. 1860 Unit of illumination Candlepower (cp) latter Candela is self explained by descending order of lighting rack.
Cupping Lamp
1866 London