Roy Lewallen wrote:
In fact, current does quit flowing from the source.

In your example, the only way for the conservation of
energy principle to work, along with the laws of physics
governing EM waves, is for the reflected wave incident
upon the source to be reflected back toward the open
end of the stub. The forward and reflected energy simply
remains in the stub flowing end to end at the speed of
light in the medium. Anything else is impossible.

As I've mentioned, there are other valid ways of analyzing such a
circuit. At the end of the day, any analysis must produce the correct
result.

My analysis produces the correct result but you have rejected
it out of hand. My analysis is the method by which EM light
waves are analyzed.
--
73, Cecil http://www.w5dxp.com