| The lithium deep red line at the spectrum of the Osram HQI-TS 70W/WDL Excellence looks too strong to be an impurity from the quartz, and more like an intentional dosage, because of its intensity compared to the /NDL and /D lamps, so the lamp actually have Dy-Tl-Na-Li.
Your opinions?
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« Last Edit: July 14, 2026, 11:52:27 AM by dor123 »
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