[Elecraft] Monitor output...

[k6rb at baymoon.com]

Actually, Heisenberg's uncertainty principal had to do with trying to
determine the position and velocity of an electron through observation.
Since, in order to observe the electron one would have to bounce a photon
off of it, the act of observation (e.g. hitting it with a photon) would
change its position or velocity making the observation invalid since the
electron is no longer traveling as it was prior to the observation.

I later postulated that Heisenberg's uncertainty principal applied to
people being observed. For example, when people knew they were being
observed through a one-way mirror, their behavior was different than it
would have been had they not been aware they were being observed.

Rob K6RB
> On 5/16/2011 12:50 AM, Ian White GM3SEK wrote:
>> However, the increase in vertical (time) resolution should be even more
>> dramatic.
>
> Thanks to Heisenberg's uncertainty principle, the product of the
> frequency resolution and the time resolution of ANY measurement is
> unity. The frequency resolution in Hz Fr is 1/Tr, the time resolution in
> seconds. Tr = 1/Fr.  Fr and Tr are established by the FFT parameters,
> and further modified by the filter parameters.  The display cannot
> improve on what the FFT has produced. Another way of saying it is that
> we cannot know infinitely about frequency AND time in any given
> measurement.  If we want high precision of frequency (and bandwidth of a
> signal) we must sacrifice accuracy of WHEN the signal was on that
> frequency.
>
> In the world where I have worked professionally for 40 years, we bumped
> up against this around 1980 when we began using Time Delay Spectrometry
> (a measurement system that uses a swept oscillator and a swept detector
> and an FFT to display the result),  to measure audio systems, equipment,
> transducers, and room acoustics.  The uncertainty principle applies no
> matter HOW the measurement was made -- swept or FFT or some guy staring
> at a meter. In the case of swept measurements, resolution is determined
> by the sweep rate and the bandwidth of the detector.
>
> 73,  Jim Brown K9YC
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