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On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin"
wrote in : BFD, All those radios are called Aids to navigation for a reason, they are conveniences. Were you aware of the design flaw in GPS as implemented? I just thought it might be a good idea to provide the information to those weren't. Of course, this issue makes no mention of solar mass ejections, that can potentially knock out any satellite. It appears that we are (finally?) seeing some technological innovation tickling down to the GA fleet, but I'm becoming uneasy with the apparent lack of robustness engineered in these early systems. CAL found Paris with just a compass and a chart. Yes. It was an Earth Inductor Compass*. I've never seen one of those in any aircraft in which I've flown, let alone piloted. * http://oldbeacon.com/beacon/earth_inductor_compass.htm |
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Larry Dighera wrote:
On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" wrote in : BFD, All those radios are called Aids to navigation for a reason, they are conveniences. Were you aware of the design flaw in GPS as implemented? I just thought it might be a good idea to provide the information to those weren't. Of course, this issue makes no mention of solar mass ejections, that can potentially knock out any satellite. It appears that we are (finally?) seeing some technological innovation tickling down to the GA fleet, but I'm becoming uneasy with the apparent lack of robustness engineered in these early systems. CAL found Paris with just a compass and a chart. Yes. It was an Earth Inductor Compass*. I've never seen one of those in any aircraft in which I've flown, let alone piloted. * http://oldbeacon.com/beacon/earth_inductor_compass.htm Did anybody see NOVA on PBS last night. The earth is overdue for a pole reversal. According to the program, we are already seeing issues towards that. Interesting program. -- Regards, Ross C-172F 180HP KSWI |
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The Earth is rotating and orbiting within a strong magnetic
field of the Sun, [not to mention the whole Universe]. The magnetic pole is not located on the axis and as a result the variation wanders. It appears that the Earth's magnetic field is electromagnetic and AC. The Earth doesn't physically flip over, the phase angle flips. "Ross Richardson" wrote in message ... | Larry Dighera wrote: | On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" | wrote in | : | | | BFD, All those radios are called Aids to navigation for a | reason, they are conveniences. | | | Were you aware of the design flaw in GPS as implemented? I just | thought it might be a good idea to provide the information to those | weren't. | | Of course, this issue makes no mention of solar mass ejections, that | can potentially knock out any satellite. | | It appears that we are (finally?) seeing some technological innovation | tickling down to the GA fleet, but I'm becoming uneasy with the | apparent lack of robustness engineered in these early systems. | | | CAL found Paris with just a compass and a chart. | | Yes. It was an Earth Inductor Compass*. I've never seen one of those | in any aircraft in which I've flown, let alone piloted. | | | * http://oldbeacon.com/beacon/earth_inductor_compass.htm | | | Did anybody see NOVA on PBS last night. The earth is overdue for a pole | reversal. According to the program, we are already seeing issues towards | that. Interesting program. | | -- | | Regards, Ross | C-172F 180HP | KSWI |
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Jim Macklin wrote:
The Earth is rotating and orbiting within a strong magnetic field of the Sun, [not to mention the whole Universe]. The magnetic pole is not located on the axis and as a result the variation wanders. It appears that the Earth's magnetic field is electromagnetic and AC. The Earth doesn't physically flip over, the phase angle flips. "Ross Richardson" wrote in message ... | Larry Dighera wrote: | On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" | wrote in | : | | | BFD, All those radios are called Aids to navigation for a | reason, they are conveniences. | | | Were you aware of the design flaw in GPS as implemented? I just | thought it might be a good idea to provide the information to those | weren't. | | Of course, this issue makes no mention of solar mass ejections, that | can potentially knock out any satellite. | | It appears that we are (finally?) seeing some technological innovation | tickling down to the GA fleet, but I'm becoming uneasy with the | apparent lack of robustness engineered in these early systems. | | | CAL found Paris with just a compass and a chart. | | Yes. It was an Earth Inductor Compass*. I've never seen one of those | in any aircraft in which I've flown, let alone piloted. | | | * http://oldbeacon.com/beacon/earth_inductor_compass.htm | | | Did anybody see NOVA on PBS last night. The earth is overdue for a pole | reversal. According to the program, we are already seeing issues towards | that. Interesting program. | | -- | | Regards, Ross | C-172F 180HP | KSWI What this program stated and I had read it elsewhere, is the magnetic core within the earth had flipped every 200K to 700K years. Geologist know how to figure this out from core samples. They said the last one was over 700K years ago. The north magnetic pole (as we know it) flips to the south pole. -- Regards, Ross C-172F 180HP KSWI |
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Then we need to resurrect the Tate Compass Company, who installed the
magnets in their compasses backwards so that North was South, East was West. This started the old saying, "He who has a Tate's is lost". Jim What this program stated and I had read it elsewhere, is the magnetic core within the earth had flipped every 200K to 700K years. Geologist know how to figure this out from core samples. They said the last one was over 700K years ago. The north magnetic pole (as we know it) flips to the south pole. -- Regards, Ross C-172F 180HP KSWI |
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![]() "RST Engineering" wrote in message ... : Then we need to resurrect the Tate Compass Company, who installed the : magnets in their compasses backwards so that North was South, East was West. : : This started the old saying, "He who has a Tate's is lost". : : Jim : : : My daughter says that joke should die.... ;-) |
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Commenting on future reversal of the Earth's magnetic poles, Jim Weir wrote,
Then we need to resurrect the Tate Compass Company, who installed the magnets in their compasses backwards so that North was South, East was West. This started the old saying, "He who has a Tate's is lost". Good one! I thought I'd heard then all, but this one's new to me. |
#8
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Or it just does like the AC current in the power grid and
switch to the other side of the power curve. The actual material doesn't have to move, the energy to flip over billions of tons of spinning matter isn't there. But as an A/C generator, it is just a question of electrons. "Ross Richardson" wrote in message ... | Jim Macklin wrote: | The Earth is rotating and orbiting within a strong magnetic | field of the Sun, [not to mention the whole Universe]. | | The magnetic pole is not located on the axis and as a result | the variation wanders. It appears that the Earth's magnetic | field is electromagnetic and AC. | | The Earth doesn't physically flip over, the phase angle | flips. | | | | "Ross Richardson" wrote in message | ... | | Larry Dighera wrote: | | On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" | | wrote in | | : | | | | | | BFD, All those radios are called Aids to navigation for | a | | reason, they are conveniences. | | | | | | Were you aware of the design flaw in GPS as implemented? | I just | | thought it might be a good idea to provide the | information to those | | weren't. | | | | Of course, this issue makes no mention of solar mass | ejections, that | | can potentially knock out any satellite. | | | | It appears that we are (finally?) seeing some | technological innovation | | tickling down to the GA fleet, but I'm becoming uneasy | with the | | apparent lack of robustness engineered in these early | systems. | | | | | | CAL found Paris with just a compass and a chart. | | | | Yes. It was an Earth Inductor Compass*. I've never | seen one of those | | in any aircraft in which I've flown, let alone piloted. | | | | | | * http://oldbeacon.com/beacon/earth_inductor_compass.htm | | | | | | Did anybody see NOVA on PBS last night. The earth is | overdue for a pole | | reversal. According to the program, we are already seeing | issues towards | | that. Interesting program. | | | | -- | | | | Regards, Ross | | C-172F 180HP | | KSWI | | | What this program stated and I had read it elsewhere, is the magnetic | core within the earth had flipped every 200K to 700K years. Geologist | know how to figure this out from core samples. They said the last one | was over 700K years ago. The north magnetic pole (as we know it) flips | to the south pole. | | -- | | Regards, Ross | C-172F 180HP | KSWI |
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On Wed, 25 Oct 2006 17:46:22 -0500, "Jim Macklin"
wrote: Or it just does like the AC current in the power grid and switch to the other side of the power curve. The actual material doesn't have to move, the energy to flip over billions of tons of spinning matter isn't there. But as an A/C generator, it is just a question of electrons. A while back Scientific American devoted a lot of space to this. There was also a program on it at least a year ago. Apparently the core is not a uniform spinning mass. There are convection currents up and down as well as the circulating currents we normally think of. Depending on the orientation, the flow across the top may be N,S, E, W, or some where in between. It appears the reversals are not a singular event, but may happen in stages and at different times through out the overall reversal. I don't think they are even sure of how these events may even interact...if they do. I've not seen any information on the total time expected for a complete reversal to happen. Indications (some isolated events that appear to be reversals) are that we are starting into or could be well into a change. Does it take 10 years, 100 years, or a 1000 years once its started? I don't think any one knows enough to even make a guess except for those based on core samples which are again going to be local. OTOH I believe they are pretty well documented along the mid Atlantic ridge which is probably the best accessible global record that spans many millions of years. There they have done surveys using magnetometers to get some pretty detailed maps along with a number of core samples. http://www.geomag.bgs.ac.uk/reversals.html A comparable surface feature is the mid African rift valley where the rift and active volcanoes can be seen. That is one wide valley, but the eastern walls are virtually straight up. I've never seen the western side.. Now stop and think... The New Madrid fault lies atop a "failed rift" http://earthquake.usgs.gov/regional/...php#february_7 between St Louis and Memphis. What if it decided to start opening again? Even a major quake along that fault would be something to behold. They figure if it lets go like it did back in 1812 there would be substantial damage clear up into lower Michigan and it'd shake the skyscrapers in NY and NJ. These have not been single events but a series of large events over several months. "Ross Richardson" wrote in message ... | Jim Macklin wrote: | The Earth is rotating and orbiting within a strong magnetic | field of the Sun, [not to mention the whole Universe]. | | The magnetic pole is not located on the axis and as a result | the variation wanders. It appears that the Earth's magnetic | field is electromagnetic and AC. | | The Earth doesn't physically flip over, the phase angle | flips. | | | | "Ross Richardson" wrote in message | ... | | Larry Dighera wrote: | | On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" | | wrote in | | : | | | | | | BFD, All those radios are called Aids to navigation for | a | | reason, they are conveniences. | | | | | | Were you aware of the design flaw in GPS as implemented? | I just | | thought it might be a good idea to provide the | information to those | | weren't. | | | | Of course, this issue makes no mention of solar mass | ejections, that | | can potentially knock out any satellite. | | | | It appears that we are (finally?) seeing some | technological innovation | | tickling down to the GA fleet, but I'm becoming uneasy | with the | | apparent lack of robustness engineered in these early | systems. | | | | | | CAL found Paris with just a compass and a chart. | | | | Yes. It was an Earth Inductor Compass*. I've never | seen one of those | | in any aircraft in which I've flown, let alone piloted. | | | | | | * http://oldbeacon.com/beacon/earth_inductor_compass.htm | | | | | | Did anybody see NOVA on PBS last night. The earth is | overdue for a pole | | reversal. According to the program, we are already seeing | issues towards | | that. Interesting program. | | | | -- | | | | Regards, Ross | | C-172F 180HP | | KSWI | | | What this program stated and I had read it elsewhere, is the magnetic | core within the earth had flipped every 200K to 700K years. Geologist | know how to figure this out from core samples. They said the last one | was over 700K years ago. The north magnetic pole (as we know it) flips | to the south pole. | | -- | | Regards, Ross | C-172F 180HP | KSWI Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
#10
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Fact is the more humans learn about geology, the more we
learn we don't know. "Roger (K8RI)" wrote in message ... | On Wed, 25 Oct 2006 17:46:22 -0500, "Jim Macklin" | wrote: | | Or it just does like the AC current in the power grid and | switch to the other side of the power curve. The actual | material doesn't have to move, the energy to flip over | billions of tons of spinning matter isn't there. But as an | A/C generator, it is just a question of electrons. | | A while back Scientific American devoted a lot of space to this. There | was also a program on it at least a year ago. | | Apparently the core is not a uniform spinning mass. There are | convection currents up and down as well as the circulating currents we | normally think of. Depending on the orientation, the flow across the | top may be N,S, E, W, or some where in between. It appears the | reversals are not a singular event, but may happen in stages and at | different times through out the overall reversal. I don't think they | are even sure of how these events may even interact...if they do. | | I've not seen any information on the total time expected for a | complete reversal to happen. Indications (some isolated events that | appear to be reversals) are that we are starting into or could be well | into a change. Does it take 10 years, 100 years, or a 1000 years once | its started? I don't think any one knows enough to even make a guess | except for those based on core samples which are again going to be | local. OTOH I believe they are pretty well documented along the mid | Atlantic ridge which is probably the best accessible global record | that spans many millions of years. There they have done surveys using | magnetometers to get some pretty detailed maps along with a number of | core samples. http://www.geomag.bgs.ac.uk/reversals.html | | A comparable surface feature is the mid African rift valley where the | rift and active volcanoes can be seen. That is one wide valley, but | the eastern walls are virtually straight up. I've never seen the | western side.. | | Now stop and think... The New Madrid fault lies atop a "failed rift" | http://earthquake.usgs.gov/regional/...php#february_7 | between St Louis and Memphis. What if it decided to start opening | again? Even a major quake along that fault would be something to | behold. They figure if it lets go like it did back in 1812 there | would be substantial damage clear up into lower Michigan and it'd | shake the skyscrapers in NY and NJ. These have not been single events | but a series of large events over several months. | | | | | | | "Ross Richardson" wrote in message | ... | | Jim Macklin wrote: | | The Earth is rotating and orbiting within a strong | magnetic | | field of the Sun, [not to mention the whole Universe]. | | | | The magnetic pole is not located on the axis and as a | result | | the variation wanders. It appears that the Earth's | magnetic | | field is electromagnetic and AC. | | | | The Earth doesn't physically flip over, the phase angle | | flips. | | | | | | | | "Ross Richardson" wrote in message | | ... | | | Larry Dighera wrote: | | | On Wed, 25 Oct 2006 06:17:38 -0500, "Jim Macklin" | | | wrote in | | | : | | | | | | | | | BFD, All those radios are called Aids to navigation | for | | a | | | reason, they are conveniences. | | | | | | | | | Were you aware of the design flaw in GPS as | implemented? | | I just | | | thought it might be a good idea to provide the | | information to those | | | weren't. | | | | | | Of course, this issue makes no mention of solar mass | | ejections, that | | | can potentially knock out any satellite. | | | | | | It appears that we are (finally?) seeing some | | technological innovation | | | tickling down to the GA fleet, but I'm becoming | uneasy | | with the | | | apparent lack of robustness engineered in these | early | | systems. | | | | | | | | | CAL found Paris with just a compass and a chart. | | | | | | Yes. It was an Earth Inductor Compass*. I've never | | seen one of those | | | in any aircraft in which I've flown, let alone | piloted. | | | | | | | | | * | http://oldbeacon.com/beacon/earth_inductor_compass.htm | | | | | | | | | Did anybody see NOVA on PBS last night. The earth is | | overdue for a pole | | | reversal. According to the program, we are already | seeing | | issues towards | | | that. Interesting program. | | | | | | -- | | | | | | Regards, Ross | | | C-172F 180HP | | | KSWI | | | | | | What this program stated and I had read it elsewhere, is | the magnetic | | core within the earth had flipped every 200K to 700K | years. Geologist | | know how to figure this out from core samples. They said | the last one | | was over 700K years ago. The north magnetic pole (as we | know it) flips | | to the south pole. | | | | -- | | | | Regards, Ross | | C-172F 180HP | | KSWI | | Roger Halstead (K8RI & ARRL life member) | (N833R, S# CD-2 Worlds oldest Debonair) | www.rogerhalstead.com |
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