Re: Strange sounds: Trumpets - Groaning - Scraping - In The Skies Around the World..
Laura said:
WhiteBear said:
I'm familiar with waveguides (conductive channels that are like closed rain gutters or pipes used to guide RF energy from a radar transmitter to a feedhorn), and you don't necessarily need a physical object to reflect energy. Waveguides have a property at 1/4 wave and 1/2 wave lengths which act as a wall or a doorway, which can reflect energy back almost as strongly as it hits them.
Explain more, please, with diagrams maybe, 'cause I sorta know what you are talking about but I think I need a picture.
Hopefully this clears up 1/4-wave effects:
"What's so special about a quarter-wavelength?
Referring to a Smith chart, if you are already at a matched impedance condition, any length of transmission line at the system characteristic impedance Z0 does nothing to your input match. But if the reflection coefficient of your network (S11 for example) is at some non-ideal impedance, adding transmission line between the network and the reference plane rotates the observed reflection coefficient clockwise about the center of the Smith chart. Further, the rotation occurs at a fixed radius (and VSWR or return loss magnitude) if the transmission line has the same characteristic impedance as the source impedance Z0. By the time you have added a quarter-wavelength, you have gone 180 degrees about the center of the Smith chart.
Suppose your network was a short circuit, the left "corner" of the Smith Chart. Adding one quarter-wavelength moves you 180 degrees to the right side of the chart, to an open circuit. It's Opposite Day, Sponge Bob! That's the magic of a quarter-wavelength But there's much more that you can do, as you will see on this page.
Here's a frequently asked question: if a quarter-wave is 90 degrees in phase length, why does it transform you 180 degrees on a Smith chart? Consider that here we are plotting reflection coefficients on the Smith chart. Thus an imaginary signal that you send through a transmission line of one quarter wavelength must travel fully half a wavelength, since it travels down the quarter-wave line, gets reflected, then returns down the quarter-wave line. So when you are plotting reflection coefficients, moving in a complete "circle" means only adding 180 degrees! Note that if you are plotting transmission coefficients (such as S21 of a two-port), "90 degrees is 90 degrees".
Quarter-wave stubs
Starting with an open circuit, one quarter wavelength away you will "see" a short circuit. Starting from a short circuit, one quarter wave away you have an open circuit. Thus you can create an "RF open circuit" that is a DC short circuit, and vice versa. These two properties are used to create DC and/or RF grounds for circuits, bias tees, and much more.
Below are ADS models of a open circuit and a short circuit stub. The electrical length of each stub is 90 degrees.
The following figure shows the reflection coefficient of the above stubs, versus frequency, starting at DC and sweeping up to the quarter-wave frequency (10 GHz, denoted by markers M1 and M2.) The open circuit S11, plotted on the left) sweeps from an open to a short, while the short circuit (S22, on the right) sweeps from a short to an open. ADS wouldn't lie, would it? Note that both responses sweep clockwise with frequency, and would keep going around and around the Smith chart if you kept increasing frequency."
From _http://www.microwaves101.com/encyclopedia/quarterwave.cfm#properties
and from _http://www.radartutorial.eu/06.antennas/an19.en.html
"Tr tubes are usually conventional spark gaps enclosed in partially evacuated, sealed glass envelopes, as shown in figure 2. The arc is formed as electrons are conducted through the ionized gas or vapor. You may lower the magnitude of voltage necessary to break down a gap by reducing the pressure of the gas that surrounds the electrodes. Optimum pressure achieves the most efficient tr operation. You can reduce the recovery time, or deionization time, of the gap by introducing water vapor into the tr tube. A tr tube containing water vapor at a pressure of 1 millimeter of mercury will recover in 0.5 microseconds. It is important for a tr tube to have a short recovery time to reduce the range at which targets near the radar can be detected. If, for example, echo signals reflected from nearby objects return to the radar before the tr tube has recovered, those signals will be unable to enter the receiver.
You may increase the speed with which the gap breaks down after the transmitter fires by placing a voltage across the gap electrodes. This potential is known as Keep-Alive Voltage and ranges from 100 volts to 1,000 volts. A glow discharge is maintained between the electrodes. (The term GLOW DISCHARGE refers to the discharge of electricity through a gas-filled electron tube. This is distinguished by a cathode glow and voltage drop much higher than the gas-ionization voltage in the cathode vicinity.) This action provides for rapid ionization when the transmitter pulse arrives."
What this excerpt is suggesting to me is that ionized atmosphere could act effectively as a "TR spark gap", electrically reflective to energies of a certain frequency.
I was reading on this forum till 2.00 AM 
What can I say to this point of interest?
a soul could be the wave reading unit, depending on its perception how much from the universe that consciousness can read, like learning new and more complex languages. When I read about the wave made by emotion, I thought that maybe that's why souled beings can read the emotion waves from others aka have empathy and sympathy, and maybe that's why the cs said that there's gonna be like two planets earth, because some will be able to read the wave better than others.
