معنى إنكسار للضوء في القاموس

Discharge lamp ("electronic") flashlight apparatus

Diodes, other than photosensitive or light emitting diodes

Photographic flashlight apparatus and flashbulbs

Paper and paperboard of a kind used as a base for photo sensitive, heat sensitive or electro sensitive paper or paperboard

Machines for assembling electric or electronic lamps, tubes or valves or flash bulbs, in glass envelopes