On Wednesday, 23 January 2019 16:32:07 UTC, Dave Plowman (News) wrote:

That could be the problem. The more you fiddle with LEDs to get a
continuous spectrum, the more the efficiency drops.

who is trying to get continuous spectrum from LED lighting?


Same, really, as with
florries - but more so.

Halophosphates gave far closer to full spectrum than the more modern & far more efficient triphosphor coatings.


NT