Re: Amusing problem about DC polarity
- From: Robert Baer <robertbaer@xxxxxxxxxxxxx>
- Date: Mon, 12 Jun 2006 02:12:07 GMT
Paul Hovnanian P.E. wrote:
Rich Grise wrote:Purrrfect answer!
On Fri, 09 Jun 2006 09:36:03 -0400, James Beck wrote:
mart_in_medina@xxxxxxxxxxx says...
On 9 Jun 2006 00:29:41 -0700, in sci.electronics.design "siliconmike"
Imagine a black plastic box that takes in DC power but has no polarity
markings on its power socket.
The problem is to experimentally determine the correct DC polarity
without opening the box and without letting the box die.
How close can we come?
I'll ask the cat
What if it's dead?
Who are you gonna' ask then?
The cat must be dead by now. Nobody's fed or watered the thing for over
70 years! ;-)
"There is no cat."
-A. Einstein
.
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