Don Pearce wrote:
On Mon, 06 Feb 2012 12:48:28 +0000, Bill Wright
wrote:

Don Pearce wrote:

I don't think anybody ever passed a law that said interference could
only make the signal go upwards. In both video polarities there are
black and white fishes. The white ones dominate visually.

d
So why were we told that one of the great advantages of 625 was that the
interference would be black?

Possibly it was an early manifestation of the BBC's attempts to convince
that black equals white.

Bill