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From: dbb@aicchi.UUCP (Burch)
Newsgroups: net.sci
Subject: Re: Broadcast power query
Message-ID: <808@aicchi.UUCP>
Date: Sat, 20-Sep-86 14:25:28 EDT
Article-I.D.: aicchi.808
Posted: Sat Sep 20 14:25:28 1986
Date-Received: Sun, 28-Sep-86 00:27:22 EDT
References: <22100001@uiucuxa>
Reply-To: dbb@aicchi.UUCP (Burch)
Organization: Analysts International Corp; Chicago Branch
Lines: 25
Keywords: Nicolai Tesla, Broadcast power, Inverse Square Law
Summary: Inverse square law defeats broadcast power.

In article <22100001@uiucuxa> pax@uiucuxa.CSO.UIUC.EDU writes:
>
>Can anyone explain in simple terms why broadcast power isn't used?
>I have supposed that it must be inefficient, have undesirable 
>side-effects, or make billing impossible, but I'd like to know specifically. 
>The reason I ask is that it would eliminate a lot of cords, there are a lot
>more than there used to be, in an office or home if there were a way to 
>use it on such a small scale.

Broadcast power intensity decreases as one moves away from the transmitter
by the ratio of the square of the distance.  Newton discovered this law when
he was examining universal gravitation, but it works for all broadcast energy.

Nicolai Tesla had built a broadcast power setup, and it worked, but the waste
of power was such that nobody could afford to use it.  In another context,
broadcast power (confined to tight beams) is being considered today for space
operations.  Spies use broadcast power to re-charge spy devices which they
cannot get physical access to.  It is the method of choice where wires cannot
be run, and where stored enery of self-generated energy are not possible.
-- 
-David B. (Ben) Burch
 Analysts International Corp.
 Chicago Branch (ihnp4!aicchi!dbb)

"Argue for your limitations, and they are yours"