On Wed, 5 Dec 2007 07:18:47 -0800 (PST), Keith Dysart
wrote:

This then begs the question, is the physical (or electrical) phase
shift in the components of much interest?

Hi Keith,

Its consideration is listed by the Department of Commerce as an
important occupation for the home bound and invalid during the Winter
months.

73's
Richard Clark, KB7QHC