Re: IS THE GALILEO SYSTEM IN JEOPARDY?

"Alan White" <alan.lesley@xxxxxxxxxxxxx> wrote in message news:5v37t2dp4ljmo9rpnhbnk69h6l5ms23osv@xxxxxxxxxx
On Wed, 14 Feb 2007 16:19:06 -0500, "John R. Copeland"
<jcopelan@xxxxxxxxxxxxxxxxxxx> wrote:

That would be true if the satellite vehicles were at infinite distance.
But they are much nearer than that.

If you do the maths you'll find that each satellite 'illuminates'
slightly less than an earth hemisphere. Hence, Sam is correct.

--
Alan White

Your "illumination" explanation agrees with what I said, Alan.
From infinite distance, that "illumination" would equal a hemisphere.
You needn't even do math(s). Draw a diagram.

.

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