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EM/RF Shielding

I've been floating a theory around recently and have came across some info that might back it.

First, some background:

The EM generator in what was (*SPOILER*) formerly the swan hatch was considerably strong. (enough to pull down a plane) This field can be blamed for two troubles the losties have.
1)It can be the cause of changing the magnetic poles. (i.e. showing that north on a compass might not really be north)

2)It COULD be used as a cloaking device for the island, bending light rays around it so it can't be seen. (no research proving this yet)

But, the reason I think the EM generator is there is for an RF shield. Read this wiki article.

The article states that RF shield is made when electric & magnetic fields are coupled. This shield can be used to direct away electromagnetic radiation (or possibly other types of waves). It also quotes "Any holes in the shield force current to flow around them, so that fields passing through the holes do not excite opposing electromagnetic fields. These effects reduce the field-reflecting capability of the shield." This could be why (*SPOILER*) Henry Gale told Michael to sail towards 325 degrees on his compass.

Now, my theory:

THF is going to inhabit the island (possibly another), set up the shield and protect themselves from the radiation emitted from the "inevitable" nuclear apocalypse.
Also, THF finally finished the Valenzetti equation and realized apocalypse is coming very quickly. (Hence the fire.) They then decided the other islands were not prepared for the armageddon and resorted to go back to the Lost Island to survive.

Feel free to disagree,

Crossfade

17 Comments:

Blogger maven said...

Great theory, Crossfade! Interesting things to think about. A lot of it makes sense.

7/06/2006 12:35 PM  
Blogger Lawrence said...

This comment has been removed by a blog administrator.

7/06/2006 8:36 PM  
Blogger oxillini said...

I have a major sticking point with the radiation shield idea. An EM shield could not stop radioactive contamination. That is, actual physical pieces (ash, etc.) would still reach the island. The physical bits of fallout could be radioactive and would thus emit radiation once inside the bubble of the shield. This emitted radiation, assuming the shield works, would be trapped like light in a greenhouse. The strength of the radiation field inside the shield would soon be the same as the outside, rendering the whole project useless.

As far as using EM to hide the island, the problem is, as soon as a field powerful enough to do any of the things theorized is switched on, the eyes of the US and Russia (and probably several other nations, notably China) would turn to the island immediately. The Magnetic anomaly detectors used in sub hunting would go nuts!

7/07/2006 1:47 PM  
Blogger oxillini said...

No, the only way to remove the radioactive property from a bit of matter would be to either allow it to naturally decay to a stable element and isotope or force it to undergo a nuclear reaction, thereby producing a different (and generally also radioactive) element and isotope.

7/07/2006 2:04 PM  
Blogger oxillini said...

The problem is, when talking world ending, nuclear winter type scenarios, fallout is global. It won't matter where the island is.

From the wiki on Nuclear Fallout:

Worldwide fallout
After an air burst the fission products, unfissioned nuclear material, and weapon residues which have been vaporized by the heat of the fireball will condense into a fine suspension of very small particles 10 nm to 20 µm in diameter. These particles may be quickly drawn up into the stratosphere, particularly if the explosive yield exceeds 10 kt. They will then be dispersed by atmospheric winds and will gradually settle to the earth's surface after weeks, months, and even years as worldwide fallout.

7/07/2006 2:26 PM  
Blogger oxillini said...

Well, sufficiently strong EM fields can cause inductive heating or create electrical currents in nearby metallic objects. Also, a sufficiently strong EM field would basically stop any incoming missiles, or vessels, by disrupting the guidance systems, or detonating electrically armed explosives.

7/07/2006 2:51 PM  
Blogger alcorandmizar said...

It is highly unlikely that RF or electromagnetic shielding encompasses the entire island. From the electromagnetic shielding wiki article: "The shielding is achieved using a conductive material as a barrier. Typical materials include sheet metal, metal mesh, ionized gas, plasma and aluminum foil." Anything such as this would have to be huge to encompass the island and would distort their view of the sky and sun.

7/07/2006 5:44 PM  
Blogger David said...

How would you account for Sam Toomey and Leonard Simms hearing the numbers at their military listening post? My first thought was that transmission did not originate on the island. However, Rousseau stated her science expedition arrived at the island after homing in on what appears to be the same signal.

It would not make sense for the listening post to be aligned with the hole at 325 degrees. They would be able to tune into the signal at all times. Perhaps the RF shield required maintenance during those times and was disabled?

7/08/2006 12:21 AM  
Blogger oxillini said...

I think alco and crossfade are talking about two different concepts regarding an "EM shield." Alco's wiki reference discusses shielding to prevent interference from EM/RF. This is commonplace on electronics and communications equipment. Crossfade is talking about using an EM field as a shield to prevent something (detection, communication with the outside world, etc.)

7/08/2006 8:30 AM  
Blogger oxillini said...

although the more i think about what i learned in electromagnetics (man, those classes sucked!) the more i believe a powerful EM field providing a shield-like bubble would require massive and extensive antenna grids. and i mean massive on an island-encompassing scale.

7/08/2006 8:49 AM  
Blogger oxillini said...

What if the island's electromagnetic properties are to be harnessed for power? What if the Swan station was really the control room for a massive power supply? Powering what? Well, large-scale lasers require huge "bursts" of power, rail-guns require huge "bursts" of power as examples. Perhaps pushing the button discharged the power harmlessly when thf did not intend to "fire" whatever it was that the Swan station was powering. Just throwing that out there.

7/08/2006 9:10 AM  
Blogger oxillini said...

it's ok, I have both windows open!

7/08/2006 10:29 AM  
Blogger oxillini said...

sweet! it's kylekennett@gmail.com

7/08/2006 10:53 AM  
Blogger Thrasher76 said...

Excellent Post!!

7/08/2006 10:57 AM  
Blogger Thrasher76 said...

If they are in fact in a "snow globe," other than shielding the experiments and for protect what other purpose could they have?

Who is making the food drops? How would they have food for the end of the world?

Just my own feebile questions!

7/08/2006 11:01 AM  
Blogger oxillini said...

thrasher: working on a post about nuclear winter, fallout, the end of the world stuff right now. should be all happy and full of puppy dogs and ice cream, ya know! anyway, looks like they'd need at least a year of fodd supply to outlast nuclear winter, still working on the fallout problem.

7/08/2006 11:10 AM  
Blogger oxillini said...

gotta run, see y'all monday morning!

7/08/2006 11:47 AM  

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