Closeup run-up and hot restrike of my 70W R7s green thallium lamp
[url]https://www.youtube.com/watch?v=bNpNK0rZ2yI[/url]
[url]https://www.youtube.com/watch?v=U1BsqVD7uKg[/url]
It runs up very fast and hot restrikes within less than 2 mins.
A phenomenon that I don't understand is what all the black stuff in the arctube when it is cooling down?

Closeup run-up and hot restrike of my 70W R7s green thallium lamp

https://www.youtube.com/watch?v=bNpNK0rZ2yI
https://www.youtube.com/watch?v=U1BsqVD7uKg
It runs up very fast and hot restrikes within less than 2 mins.
A phenomenon that I don't understand is what all the black stuff in the arctube when it is cooling down?

MVI_8141_MP4_snapshot_00_13_234.jpg MVI_8145_MP4_snapshot_00_19_586.jpg MVI_8266_MP4_snapshot_00_09_075.jpg MVI_8276_MP4_snapshot_00_11_578.jpg MVI_8309_MP4_snapshot_00_11_240.jpg
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