Jan 12, 2017 at 01:04 AM Author: dor123
Except for the Philips Master HPI 250W/745 BU, the DX coating on the probe-start MH lamps is redundant, as it radiation isn't noticeable in Na-Sc chemistry, as the scandium mask the DX emission with its own emission. With tri-band lamps, there is almost no red emission after the sodium D line, so the DX coating here acts as a fourth band.

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Jan 12, 2017 at 09:27 AM Author: dor123
In most MH lamps that have lithium, lithium comes from the quartz as an impurity.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

Jan 31, 2017 at 04:18 AM Author: dor123
There is some discussion here at one of Stan's pictures about this subject, why lithium don't appears in the spectrum of mercury lamps, if most MH lamps contains it as an impurity from the quartz, and I don't know where it is located. I think that it have to do with the presence of halides or halogens inside the arctube.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.