light bulb [Z02] - professional lighting equipment - light turn on and off Macro of incandescent bulb 00:12 Turn on Light Bulb - Slow Motion 00:13 Vintage retro edison style light bulbs with decorative filaments on display in shop window ...
reasons of the close-up of the conjunt or established, placing in the openings of the holes, optical glasses, for the extension of the luminous intensity, not presenting the bulbs any metal cap, but the outer filaments, are protected with a plastic cover to avoid contacts with the metal ....