Better closup with my ND1000 filter of the run-up of my 70W 8000K MH lamp
[url]https://www.youtube.com/watch?v=0DpXqUqogkA[/url]
Indium being ionized the fastest, because of the high pressure, so the lamp switches to blue colour during run-up. Thallium being ionized slower.

Better closup with my ND1000 filter of the run-up of my 70W 8000K MH lamp

https://www.youtube.com/watch?v=0DpXqUqogkA
Indium being ionized the fastest, because of the high pressure, so the lamp switches to blue colour during run-up. Thallium being ionized slower.

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