Cold filament failure
Fracture of a tungsten bulb filament below operational temperature; characterised by a clean, brittle transverse fracture with no deformation and no oxide layer, confirming the headlight was off at impact.
Fracture of a tungsten bulb filament below operational temperature; characterised by a clean, brittle transverse fracture with no deformation and no oxide layer, confirming the headlight was off at impact.
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