Judy Budden has not received any gifts yet
Judy, when the glass is removed from a light bulb and then the Bulb turned on the filament vaporises leaving a smoke reaction in the air.normally a globe wont do this as the glass has a vacuum which protects the filament from vaporising.
thanks for the comment. if you want to see how this works have a look on you tube there is a section about it.
Paul Francis
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