[Amps] "Conventional" current flow

Mon Nov 21 02:06:08 EST 2016

That's a heavy question.

And another........What's the speed of gravity waves?

Youth Wants To Know........

Bob   K7IRK

----- Original Message ----- 
From: "Charles H" <k4vud at hotmail.com>
To: "Jim Garland" <4cx250b at miamioh.edu>; <amps at contesting.com>
Sent: Sunday, November 20, 2016 10:55 PM
Subject: Re: [Amps] "Conventional" current flow

> When communicating, ham to ham, by modulated gravitation waves, is there 
> any QRM ?
>
> I am very uncertain about this.  Ch
>
>
> ________________________________
> From: Amps <amps-bounces at contesting.com> on behalf of Jim Garland 
> <4cx250b at miamioh.edu>
> Sent: Monday, November 21, 2016 5:01 AM
> To: amps at contesting.com
> Subject: Re: [Amps] "Conventional" current flow
>
> Hi Gang,
> I'm finding this a very interesting discussion, since it illustrates how a
> simple question (how current flows in a vacuum tube) quickly morphs into
> much more profound issues once the surface is scratched. To me, that's the
> way science progresses. Here are a few of my thoughts on comments raised 
> by
> some of our distinguished list members:
>>
>> So the Heisenberg Uncertainty Principle is still uncertain? I feel it's
>> obvious once the process is measured, the process is changed.
>> The main bang in my bag is gravity. What is it???
>> 73 N7RT
>
> I don't think there's anything obvious about the uncertainty principle.
> Hardy is correct that measuring the property of e.g., the position of an
> electron, always causes it to move a little bit. As he says, "once the
> process is measured, the process is changed." True enough, but before the
> uncertainty principle, it was always assumed that the "change" in the
> process could be made arbitrarily small by using more an ever more 
> sensitive
> measuring instrument. The uncertainty principle says that there's always a
> minimum change which cannot be made smaller, no matter how delicate and
> sensitive the measuring device. In other words, the change is quantized, 
> and
> there's nothing obvious about that!
>        The uncertainty principle comes out of quantum mechanics, which 
> says
> that small objects, like electrons, are described by a probability wave, 
> and
> that the frequency of the wave is a measure of the electron's kinetic 
> energy
> (or speed). The peak in the probability wave is the most probable location
> of the electron. To get any wave to peak up, however, you have to add
> together waves of different frequencies, and the sharper the wave peaks, 
> the
> more waves have to be added together. It's analogous to the key clicks 
> that
> occur when a CW signal turns on and off too quickly. The sharper the 
> keying
> envelope, the wider the frequency spread of the key click. With the
> probability wave of an electron, the sharper the peak, the broader the
> spectrum of waves that have to be added together, and since the frequency 
> of
> a wave component corresponds to the speed of that component, then the
> electron's speed becomes increasingly uncertain. In other words, the more
> precisely you try to the position of an electron (or anything else), the
> more likely you are to give it a large, uncertain speed.
>
> Now, to gravity. Bill W6WRT asserts that
>
>> "Einstein's description of gravity as a "distorting of space" is typical
> [of a fixation on the math and losing > > sight of what is real.] Gravity 
> is
> simply a force which is poorly understood, not a distortion of anything."
>
> Sorry to disagree with you, Bill, but actually gravity is very well
> understood. Our understanding comes out of the general relativity field
> equations, and the equations have been verified by experiment thousands of
> times. Every GPS detector depends on the equations, as do precise time
> bases, and measurements of light deflected by stars, and satellite
> trajectories, and on and on and on.
>
> Here's the intuitive explanation given in beginning relativity courses 
> about
> how a distortion of space can seem like an ordinary force. We live in a
> three dimensional universe, but imagine a two dimensional flat universe,
> which we can envisage as the surface of a large flat mattress. All motion 
> in
> our 2D universe then corresponds to moving around on the surface. Now 
> place
> two heavy bowling balls near each other on the mattress. The weight of the
> bowling balls causes a depression in the mattress, which will cause the
> balls to roll into each other. In other words, the distortion of the
> mattress into the third dimension looks just like a force on the balls 
> that
> draws them together. It's the same idea in our 3D universe. The mass of 
> the
> earth distorts our 3D universe into a 4th dimension, causing masses to 
> fall
> toward the earth..
>
> You may have heard recently about the discovery of gravitational waves,
> predicted by Einstein. A friend of mine worked on the experiment for 
> thirty
> years, (He had a lot of help. More than a thousand scientists and 
> engineers
> worked with him.), and it's probably the most amazing experiment in the
> history of the human race. Basically, when masses collide, they cause 
> space
> around the collision site to reverberate, like striking a gong, and 
> ripples
> in space radiate out from the collision at the speed of light. The
> experiment detected the propagating gravity waves from two black holes 
> that
> spiraled into each other over a billion years ago, traveling more than a
> billion light years to reach us. One of the cool things about the 
> experiment
> is that the colliding black holes spiraled into each other at an audio
> frequency. The resulting gravity waves were thus in the audible range, and
> to a listener sounded like an audio sound wave chirp. The two detectors,
> which were spaced a thousand miles apart, each heard the chirp as the wave
> passed by. You owe it yourself to read about this experiment, called LIGO.
> Here's the website: https://www.ligo.caltech.edu/news/ligo20160211
> [https://www.ligo.caltech.edu/system/news_items/images/18/page/ligo20160211_Tn.jpg?1456255499]<https://www.ligo.caltech.edu/news/ligo20160211>
>
> News | Gravitational Waves Detected 100 Years After 
> ...<https://www.ligo.caltech.edu/news/ligo20160211>
> www.ligo.caltech.edu
> For the first time, scientists have observed ripples in the fabric of 
> spacetime called gravitational waves, arriving at the earth from a 
> cataclysmic event in the ...
>
>
>
> One final comment, pertaining to the role of mathematics in physics. Bill
> W6WRT is completely correct that math is just a method for describing the
> laws of the universe, and he's also correct that physics equations can be
> error-free mathematically, but still hugely wrong if they're based on 
> faulty
> premises or bad data. That's why all science ultimately rests on data and
> experiment. By the way, the best theory in the world, in terms of how
> accurately it explains real laws, is called "quantum electrodynamics." The
> equations of the theory have been tested against experiment out to ten
> digits, with no measurable error. Many people worked it out, but Richard
> Feynman probably gets most of the credit. Heck of a smart guy.
>
> 73,
> Jim W8ZR
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
> Amps Reflector - Contesting.com Ham Radio Mailing 
> Lists<http://lists.contesting.com/mailman/listinfo/amps>
> lists.contesting.com
> Welcome to the Amplifier mailing list! This list is intended for the 
> exchange of information on HAM RADIO Amplifiers related topics ONLY. Our 
> goal is to keep ...
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
> 

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus