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emeritus · 27th Apr 2019, 1:41 pm

Interesting photos, thank you. Item 5 of #43 looks like one of the type used in the early days by Edison and others, where the filament was a strip of carbonised paper or Bristol Board, or is its appearance due to camera shake?

27th Apr 2019, 1:41 pm	#49
emeritus Dekatron Join Date: Jan 2012 Location: Brentwood, Essex, UK. Posts: 5,349	Re: The lightbulb conspiracy Interesting photos, thank you. Item 5 of #43 looks like one of the type used in the early days by Edison and others, where the filament was a strip of carbonised paper or Bristol Board, or is its appearance due to camera shake?