The arc of my no name 70W green thallium lamp
It is unfortunately obscured by a silver layer, that don't melting when the lamp is hot.

The arc of my no name 70W green thallium lamp

It is unfortunately obscured by a silver layer, that don't melting when the lamp is hot.

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AngryHorse   [01 May, 2026 at 09:05 PM]
I wonder if it’s the electrodes are evaporating like those Philips lamps I had?
dor123   [01 May, 2026 at 09:27 PM]
I don't think so. The coating is silver, not black.

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