On Sat, 15 Dec 2012 03:29:31 -0800, "William Sommerwerck"
wrote:

There are many situations where halogen lamps are dimmed successfully.

** Not many - ALL !!

For various values of "successfully", perhaps.

I won't gainsay any of your other remarks. But I've seen this.

Other remarks? Where? You've seen them ALL? I'm impressed.