Assertion: lamp's reflector | /r/HasProperty | grounded earthed
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text: Usually operating at a lower arc voltage than the instant start design; no inductive voltage spike is produced for starting, so the lamps must be mounted near a grounded (earthed) reflector to allow the glow discharge to propagate through the tube and initiate the arc discharge[why?]. In some lamps a grounded "starting aid" strip is attached to the outside of the lamp glass.