The Natural Philosopher wrote:
Harry Bloomfield wrote:
Mike W W laid this down on his screen :

Are there any kind of
fibre-optic products designed to channel sunlight into a room?

That would be very expensive for enough to make a difference and the
fibre would be very lossy.

NO, but polished stainless steel light pipes are used. Far cheaper and
surprisingly effective..must install one here on the central staircase.

If you use something like this, a concentrator on the outside would up
light levels quite a bit.

NT