On Monday, 4 March 2019 13:03:34 UTC, whisky-dave wrote:
On Monday, 4 March 2019 11:43:43 UTC, tabby wrote:

If they're the old type that flash during starting, just loosen the starter on a fitting & it doesn't start. Easiest way to dim the room.

So I go around with a ladder messing about with upto 20 tube starters not thanks.

if you're stupid enough to do it that way

Why dim? IME nearly all commercial & school fluorescent installs are heavily overpowered.

When the projection system is being used or they want to show slides or whatever I assume. I don't think we asked for dimmable lights. well it wasn't part of the things I wanted in the lab.