Why aluminum stocks are always a good bet

[dales]

Loca - pay no attention to.........

[Lord Jim]

I wonder if rube actually understands that wiki article he copy and pasted....

I doubt it...it looks pretty complicated for him....(not that it's all that complex for an adult with even average reading comprehension skills, but parts of it are more complex than that article about Krugman he wasn't able to understand.)

[Econoline]

Aluminum does get hot, but it's use outdoors negates that factor, plus it is the least oxidised.

I think gold beats aluminum in that respect, though gold obviously has other (economic) disadvantages...

[liberty]

Aluminum does get hot, but it's use outdoors negates that factor, plus it is the least oxidised.

I think gold beats aluminum in that respect, though gold obviously has other (economic) disadvantages...

Economic disadvantage, yes I definitely think so; a house wired in with 110 and 220 rated gold wiring would be the ultimate in extravagance. But don’t let it become a status symbol or the price gold will disappear in somewhere in outer space.

I can’t remember where I came across this, but I remember a story where during World War II gold and or silver was taken out of fort Knox converted to wire and used for the Manhattan project.

[loCAtek]

Gold is an excellent conductor, so much so you'll find wedding/engagement rings are highly discouraged on the job.

...but, it's commonly found in electronics circuitry.

[rubato]

Simple first-year physics. The second of three parts in the physics series for 'hard science' majors like chemistry and physics.

Ranked in order of Conductivity, elements in the ground state.:

Silver
Copper
Gold
Aluminum

Silver is rarely used except because it is expensive, it tarnishes on exposure to O2, the melting point is low which complicates process integration.

Copper is the most recent advance in computer chip interconnections being introduced in the late 1990s and currently used in parallel with aluminum.

Aluminum is cheap and forms a protective oxide layer on its surface (self-sealing) and is lighter in weight.

Gold is less used because of the expense although it is used for bonding pads and other types of contacts.



All good conductors of electricity are good conductors of heat. Poor conductors of electricity are also heat insulators (like glass).



Faraday cages work because when an electrical field encounters a conductor the charge carriers (electrons in this case) absorb the energy of the field (as they do in an antenna, right?). Energy which is absorbed by the cage is no longer avail. to effect what in inside the cage. Generally, the types of electrical fields which are encountered are too weak to cause any heat buildup.

Your microwave oven has a Faraday cage to isolate the microwaves inside the oven where they are doing useful work from the world outside where they would cause mischief.

yrs,
rubato

[oldr_n_wsr]

Faraday Cages have to be eternally charged; otherwise conductive materials will just augment signals.

I am assuming a typo and you meant to say eXternally charged
Ideally the faraday cage would be grounded and any electric charge that the cage "picks up" is from an airborn signal (be it "on purpose" radio waves or a static charge/lightning) that is prevented from getting inside the cage (or from getting out if the signal is generated from inside the cage). The cage itself needs no "charging" or any kind of power.

Conductive materials will not "augment" any signals. A frequency generated by a radio (or signal generator) will be radiated by a piece of conducting material. If anything the signal will be diminished by some amount (when compared to the original signal) due to the inherant resistance (reactance) of the material being used.

BTW - I'm manufacturing/welding aluminum telecommunications antennas, these days.

BTW I'm and Electrical Engineer and have been for over 30 years (graduated summa cum laude).
and from what I remember, liberty is also an EE.

liberty
I'm no expert on military hardware or body implanted micro processors/antannae, but I would guess they would operate on a pretty high frequency.

Your microwave oven has a Faraday cage to isolate the microwaves inside the oven where they are doing useful work from the world outside where they would cause mischief.

Part of that cage can be seen when you look through the glass door on the front of the microwave.

[oldr_n_wsr]

An airplane is an example of an ungrounded faraday cage. Rather than pass the lighting bolt to ground (pretty hard to connect to ground when up in the air), the planes skin passes the charge along the outside of it's body where it then exits and the bolt of lighting then finishes it's path to earth. Usually a momentary disruption of lights and some turbulance and a loud bang (thunder) is all passengers know about having been struck by lightning although once it lands, I believe a full systems check is done on the aircraft.

[dales]

An ungrounded faraday cage

[rubato]

A bag of hydrogen being ignited.


yrs,
rubato

[loCAtek]

I stand corrected on the Faraday dynamics, I just didn't think aluminum foil would act like one in the movie, but also because I realized that I was no expert ( I just burn the antennas - I don't design them);


the burnin'


Painted and getting electronic-




... I went to the antenna engineers. One guy is even a Former Marine, so he was familiar with the predator drone capabilities; it was his opinion that foil would not block the chip well. He believed that at best the signal would be slightly scattered, but not eliminated. That would be enough to locate Bourne, to within visual range.

To test that theory, as best I knew how- I tried to block my cellphone's reception with a 'space blanket' made of aluminum. It was completely covered on all sides, in two layers, and then I asked the Roomie's daughter to call me.

There was no delay...

~RING~


As far as I could tell, the chip in my phone was discovered, despite it being blanketed in aluminum.

[Sean]

I wonder if rube actually understands that wiki article he copy and pasted....

I doubt it...it looks pretty complicated for him....(not that it's all that complex for an adult with even average reading comprehension skills, but parts of it are more complex than that article about Krugman he wasn't able to understand.)

I doubt he understands much of anything he posts...

It's worth pointing this out too...

David Faraday ("the great experimentalist") showed that if you built a 'Faraday cage' it would effectively isolate electromagnetic events occurring within the cage from those without.* A 'Faraday cage' is just a conductive net of material which can be effected with a layer of tinfoil.

Yes folks, our resident 'scientist' tells us about The Great Experimentalist... The very famous British scientist... David Faraday!

Any relation to Michael Faraday Rubey?

[Lord Jim]

Yes folks, our resident 'scientist'

There is about as much chance of rube being a "scientist" by any meaningful definition of that term, as there is of me being cast to play Scarlett O'Hara in a remake of Gone With The Wind....

[loCAtek]

You just need the right window dressing, Jim

[Lord Jim]

You just need the right window dressing, Jim

Contrary to popular rumor, I don't look all that fetching in green velvet, LoCa...

[Scooter]

I'm guessing it's probably a while since you had an 18-inch waist anyway.

[Lord Jim]

I'm guessing it's probably a while since you had an 18-inch waist anyway.

Yeah, it's been a year or two...

[liberty]

Tin foil blocked my cell phone’s signal.

[Guinevere]

Yes folks, our resident 'scientist'

There is about as much chance of rube being a "scientist" by any meaningful definition of that term, as there is of me being cast to play Scarlett O'Hara in a remake of Gone With The Wind....

If Carol Burnett can pull it off....

[Lord Jim]

Well fiddle dee dee...

If Carol Burnett can pull it off....

I remember that...

That was hilarious...