Rare Earth Elements

Sure it isn't just some ordinary ceramic? Who said so, the guy who wants to sell you a new one?

Your timing light, your call. If it was me, I'd part the damned thing out and buy an old-school light with an iron inductive pickup. I've never broken one of those.

SNL News flash: Johann Carl Friedrich Gauss is still dead.

There are always alternatives. Some are more... palatable than others.

Mark L. Fergerson

For the moment. The rare earth's make the magnetic pickup more sensitive, so you can lower voltages and currents and use smaller batteries and components. Make 'em sensitive enough, and they won't need batteries at all, but power themselves off intercepted RF from the plug wire. As an added bonus, you can use it as a TV antenna, to watch Quincy while your face is buried under the hood of your car, hiding from your ruthless wife.

Everybody is asking themselves the same question, and tech geniuses somewhere are looking for an answer. What do we use to cover the gap if the Chinese cut off our supplies completely? We've got Yankee Ingenuity on our side, and they'd better pray we don't find one, because there's big phat Samolians in it for all of us.

If we're really lucky, there'll be a ground war in Africa with the Chinese for rare earths. BAD luck, that is ... Black Gold, Texas Tea.

The rare earth metals are not that "rare"....it is known where concentrations of these metals are located.....they are approximately

200 times more abundant then gold in the earths crust....

The rare earth metals are all quite chemically similar to each other, and they are thus quite difficult to separate into quantities of the pure element.

The problem is the refining of these metals....even a small amount of contamination in the pure metal can change drastically the material properties.....the present means of refining these metals is an extremely "dirty" process.....and all..??....(do not know the percentage) of refining capability is located in china....it is estimated that it will take from 10 to 15 years to rebuild our capability...(western world)....at one time we had this capability but the Chinese dumped rare earths and lowered the price to where our mines and refineries were shut down as being uneconomical....

just some thoughts....have fun.....sno

--
Correct Scientific Terminology:
Hypothesis - a guess as to why or how something occurs
Theory - a hypothesis that has been checked by enough experiments
  to be generally assumed to be true.
Law - a hypothesis that has been checked by enough experiments
  in enough different ways that it is assumed to be truer then a theory.
Note: nothing is proven in science, things are assumed to be true.

here's from an article -- sorry, about the format:

The Mountain Pass mine, located in the Mojave Desert north of Barstow, California, was one of the richest, if not the richest rare earth element (lanthanide) mine in the world. But on Oct.

31, 1994, with the passing of the California Desert Protection Act, the mine was effectively surrounded by park land, potentially locking up a large part of the ore body in the new Mojave preserve and adding tremendous constraints to the open pits operation. This act was pushed through by Sen. Diane Feinstein and Rep. George Miller. When water from a routine flushing of the tailing pipeline accidentally spilled into the Mojave preserve, the clean-=C2=AD=E2=80=90up effort by the owner, Molycorp Minerals LLC, was delayed for months by Federal agencies. Twenty-=C2=AD=E2=80=90nine government agencies got involved. U.S. Fish and Wildlife and California Department of Fish and Game SWAT teams seized the company computers and records at gunpoint. They held the employees incommunicado under armed guard, denying them access to the company attorneys, who were held outside at the main gate. These federal agencies levied more than $6 million in fines and penalties against the company. This includes $1 million for a dead desert tortoise that was found on the property. (!) An autopsy on the tortoise failed to show any wrongdoing on the part of the company. As it turns out, Diane Feinstein's husband, Richard

rasterspace:

easy-to-read re-do:

mesoweb

Electric cars are an alternative.

You could invade China as you did with Iraq. You wouldn't even need to lie. You could say China conquered Tibet and you are liberating it.

-Recopied and repasted: Re: Rare Earth Elements Group: sci.electronics.basics Date: Tue, Feb 22,

2011, 9:01pm From: snipped-for-privacy@hotmail.com (rasterspace) here's from an article

-- sorry, about the format: The Mountain Pass mine, located in the Mojave Desert north of Barstow, California, was one of the richest, if not the richest rare earth element (lanthanide) mine in the world. But on Oct. 31,

1994, with the passing of the California Desert Protection Act, the mine was effectively surrounded by park land, potentially locking up a large part of the ore body in the new Mojave preserve and adding tremendous constraints to the open pits operation. This act was pushed through by Sen. Diane Feinstein and Rep. George Miller. When water from a routine flushing of the tailing pipeline accidentally spilled into the Mojave preserve, the clean-??.?up effort by the owner, Molycorp Minerals LLC, was delayed for months by Federal agencies. Twenty-??.?nine government agencies got involved. U.S. Fish and Wildlife and California Department of Fish and Game SWAT teams seized the company computers and records at gunpoint. They held the employees incommunicado under armed guard, denying them access to the company attorneys, who were held outside at the main gate. These federal agencies levied more than $6 million in fines and penalties against the company. This includes $1 million for a dead desert tortoise that was found on the property. (!) An autopsy on the tortoise failed to show any wrongdoing on the part of the company. As it turns out, Diane Feinstein's husband, Richard -------- --text ends here; anyone know the rest of the story??

--
        "Steamboat Ed" Haas         :  Steel, Stainless, Titanium:   
        Hacking the Trailing Edge!  :  Guaranteed Uncertified Welding!
                         www.nmpproducts.com
                   ---Decks a-wash in a sea of words---

The alternative is 0.1 kW/kg power density electric motors that "only" weigh 220 lbs.

If you want to scoot through intersections you rig up a big spring that can be wound up while waiting at stop lights.

If you want to haul a boat up a mountain you rent a diesel truck.

Bret Cahill

is that how they got Noah's ark, up there?

Orville Wright at 34 (left) Wilbur Wright at 38 (right)

The difficulties which obstruct the pathway to success in flying machine construction are of three general classes:

(1) Those which relate to the construction of the sustaining wings; (2) Those which relate to the generation and application of the power required to drive the machine through the air; and (3) Those relating to the balance and steering of the machine after it is actually in flight.1

Although the breakthrough achieved by the brothers would be in the solution to the third problem addressed by Wilbur=97the problem of stability and control in powered flight=97they would also considerably advance the knowledge in the other two areas, as well, in the march to their great achievement.

Didn't they also discover the principle of the propeller with the pitch gradient along its length?

Thanks, Rich

You mean the angle of attack decreasing radially?

That may go back to props on steam ships. Axial flow steam turbines had also been around a long time.

Now that we're completely off topic the prop on those 25 mph motor para gliders is only 3 1/2' in diameter so the wind speed must be pretty high to get enough thrust. 50 mph exhaust velocity would give maximum propulsion efficiency.

They're trying to go to batteries & electric motors and a bigger prop. might help. The basket or cage would need to be larger to accomodate it.

Now they can get the entire thing into a mini van or pu.

Bret Cahill