Mysteries.... Re: Wireless transmission of power. (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 21 Jun 2007 04:20:59 -0400
From: Dave Pierson <davep@xxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Mysteries....   Re: Wireless transmission of power. (fwd)

nad non mysteries.
Minimal coiling content.

>For those who want to explore this should begin with Tesla coil
    Perhaps.  The Tesla coil, as described by Tesla, is indistinguishable,
    from the radio transmitter of the day.  In the hundred years plus,
    since, no reproducible, anomalous, energy transmission has been observed.
    (Hint: various LF/VLF transmitters output MW of power, routinely.)

> and Crystal Radio. The answer is there.
    Crystal radio is well understood.  We call it solid state now.  Diodes,
    and their immediate descendants: transistors.

    Radio/wireless, pre vacuum tube was more or less wireless power: the click
    (later voice) in the head set was micro/nano watts recovered of the KW/MW
    transmitted.  Roughly, pre vacuum tube, thats all there was.  At the time
    (1900/1910) function of HOW (laws of physics) 'crystal detectors' worked
    was much debated, not fully understood.  (It may be noted that Tesla discusses
    detectors in his Colorado Springs Notes, does not, that I recall, discuss
    crystal detectors.)

    Crystal Detectors have been understood since 1947ish, work Of Bardeen/Shockley,
    et al, at Bell Labs.  A bit of history, dunno how well known this is.  Derived
    from article in IEEE Spectrum, 1980ish, Think it was '25th anniversary of
    transistor' piece.  The interested stuent could find.

    ANYway, roughly:
    In the runup to RADAR, during WWII it was found that what was then called
    'point contact diode/crystal detector' was useful in radar sets, due
    to uWave (and fast video?) properties, and simplicity.  Found its way into radar
    designs.  Somewhat Embarassingly: there was (as noted) at the time, no laws of
    physics basis.  electrostatics described vacuum tubes, allowed design,
    improvement of vacuum tubes, not so for 'crystal detectors'.  Post war, Bell Labs
    contracted with (whomever) to try to (ahemmmm) rectify this lack of knowledge.
    Building on post 1920ish advances in, eg quantaum physics, and related areas,
    testing as they went along, the derived the basis of 'solid state' predicting,
    building, and verifying the first transistor, from which all the computer ICs,
    etc, follow.

     best
      dwp