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 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
