closeup of tungsten filament of an incandescent bulb, india.

abstract macro incandescent bulb non-living-thing science technology electric filament tungsten glass product industrial mmanmade manufactured selective-focus shallow-depth-of-field blur-background delicate fragile sensitive object home-related still-life edison-bulb tesla electricity metal-filament view closeup heat coil sring shape texture pattern design old-school retro high-consumption