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Little ray
of sunshine
Picture of jhe888
posted Hide Post
I got a gallium cube, but . . .




The fish is mute, expressionless. The fish doesn't think because the fish knows everything.
 
Posts: 53423 | Location: Texas | Registered: February 10, 2004Reply With QuoteReport This Post
Member
posted Hide Post
quote:
Originally posted by jbcummings:
quote:
One of my chemistry teachers kept a chunk of tungsten on his desk as a conversation piece. He loved to ask people pick it up. ...


I had a chemistry teacher like that. He used some sort of iodine crystals on a tin pie plate. They were unstable and mildly explosive. If you bumped the plate, they'd go off like so many little fire crackers...he just loved that. This is the guy, too, that dropped a golf ball size chunk of sodium out the window into a puddle of water during a rain storm. Yeah, that one got him in trouble for a few days.



These days he'd lose his job and get domestic terrorism charges against him Roll Eyes

I remember lots of sodium/water "experiments " in HS. Aaahhh... The good old days!
 
Posts: 215 | Registered: December 29, 2016Reply With QuoteReport This Post
Almost as Fast as a Speeding Bullet
Picture of Otto Pilot
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I have a set of darts made out of tungsten. I loved those things when I was playing darts a lot. Skinny little things, but just the right heft to them.

That cube is cool.


______________________________________________
Aeronautics confers beauty and grandeur, combining art and science for those who devote themselves to it. . . . The aeronaut, free in space, sailing in the infinite, loses himself in the immense undulations of nature. He climbs, he rises, he soars, he reigns, he hurtles the proud vault of the azure sky. — Georges Besançon
 
Posts: 11502 | Location: Denver and/or The World | Registered: August 30, 2004Reply With QuoteReport This Post
Ammoholic
Picture of Skins2881
posted Hide Post
quote:
Originally posted by DitchDoctor911:
quote:
Originally posted by jbcummings:
quote:
One of my chemistry teachers kept a chunk of tungsten on his desk as a conversation piece. He loved to ask people pick it up. ...


I had a chemistry teacher like that. He used some sort of iodine crystals on a tin pie plate. They were unstable and mildly explosive. If you bumped the plate, they'd go off like so many little fire crackers...he just loved that. This is the guy, too, that dropped a golf ball size chunk of sodium out the window into a puddle of water during a rain storm. Yeah, that one got him in trouble for a few days.



These days he'd lose his job and get domestic terrorism charges against him Roll Eyes

I remember lots of sodium/water "experiments " in HS. Aaahhh... The good old days!


My teacher also dropped an alkali metal (sodium or lithium) in water in the classroom. Just a penny sized slice, pretty impressive, I want to throw a softball sized hunk in a pond.



Jesse

Sic Semper Tyrannis
 
Posts: 21348 | Location: Loudoun County, Virginia | Registered: December 27, 2014Reply With QuoteReport This Post
Free men do not ask
permission to bear arms
Picture of George43
posted Hide Post
quote:
Originally posted by flashguy:
Tungsten and Gold have almost identical densities (the same to 4 significant figures). This makes it possible to create "gold" bricks that are mostly tungsten with an outer layer of gold, and worth much less than one of solid gold. Since both are very dense, X-rays can't be used to determine if the center is tungsten. Naturally, this possibility greatly worries those who deal in gold.

Beryllium is, IIRC, extremely toxic and must be handled with care (if at all). I'm told the effects are not pretty.

I think the "iodine" crystals the teacher used were probably Nitrogen Tri-iodide (NI3). They are made by dropping iodine crystals into ammonia, letting them react, then filtering them out of the liquid. While wet they are marginally stable, but when dry the touch of a feather will set them off. (No--I've never done it.) FWIW, they are discussed in the Heinlein novel "Farnham's Freehold" as a substitute for dynamite.

flashguy


I belive you are confusing Tungsten with Platinum.


A gun in the hand is worth more than ten policemen on the phone.
The American Revolution was carried out by a group of gun toting religious zealots.
 
Posts: 3810 | Location: Spring, Texas | Registered: June 26, 2012Reply With QuoteReport This Post
Baroque Bloke
Picture of Pipe Smoker
posted Hide Post
quote:
Originally posted by flashguy:
<snip>
Beryllium is, IIRC, extremely toxic and must be handled with care (if at all). I'm told the effects are not pretty.
<snip>

Finely divided beryllium (dust) is toxic. Solid pieces, not so much. Years ago, beryllium was the material used for disc brakes on Formula 1 cars. Light, rigid, and high specific heat.



Serious about crackers
 
Posts: 9705 | Location: San Diego | Registered: July 26, 2014Reply With QuoteReport This Post
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Picture of P250UA5
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My dad, when he was in the car business, kept an engine rod from one of Schumacher's Ferrari F1 cars on his desk. Amazing how light it is.
I think it's hanging on his workbench in his shop now.




The Enemy's gate is down.
 
Posts: 16308 | Location: Spring, TX | Registered: July 11, 2011Reply With QuoteReport This Post
The Velvet Voicebox
posted Hide Post
Now that is just too cool for school. Cool Your want, your money, your want satisfied. Case closed. Might look in to that myself. Preciate the heads up Jim.



"All great things are simple, and many can be expressed in single words: freedom, justice, honor, duty, mercy, hope."

--Sir Winston Churchill

"The world is filled with violence. Because criminals carry guns, we decent law-abiding citizens should also have guns. Otherwise they will win and the decent people will lose."

--James Earl Jones



 
Posts: 7674 | Location: KCMO | Registered: August 31, 2002Reply With QuoteReport This Post
Little ray
of sunshine
Picture of jhe888
posted Hide Post
quote:
Originally posted by Pipe Smoker:
quote:
Originally posted by flashguy:
<snip>
Beryllium is, IIRC, extremely toxic and must be handled with care (if at all). I'm told the effects are not pretty.
<snip>

Finely divided beryllium (dust) is toxic. Solid pieces, not so much. Years ago, beryllium was the material used for disc brakes on Formula 1 cars. Light, rigid, and high specific heat.


I have an old Ping putter that is copper alloyed with beryllium. Copper is too soft unalloyed. That alloy was the rage in golf for a few years in the late '80s and early '90s.

It is still used when steel tools present a sparking hazard. It isn't supposed to be toxic in solid form.




The fish is mute, expressionless. The fish doesn't think because the fish knows everything.
 
Posts: 53423 | Location: Texas | Registered: February 10, 2004Reply With QuoteReport This Post
Member
posted Hide Post
I knew a guy that was a manufacture of beryllium items, he was a defense contractor and made items for space flight and military aircraft since it's so lightweight yet and so strong in certain ways and an unbelievable heat exchanger. Lots of wasteage though. If they mess it up when making it it's ruined.

That tungsten cube sitting on my desk would be fun though.
 
Posts: 5127 | Location: Florida Panhandle  | Registered: November 23, 2008Reply With QuoteReport This Post
Muzzle flash
aficionado
Picture of flashguy
posted Hide Post
quote:
Originally posted by George43:
quote:
Originally posted by flashguy:
Tungsten and Gold have almost identical densities (the same to 4 significant figures). This makes it possible to create "gold" bricks that are mostly tungsten with an outer layer of gold, and worth much less than one of solid gold. Since both are very dense, X-rays can't be used to determine if the center is tungsten. Naturally, this possibility greatly worries those who deal in gold.

Beryllium is, IIRC, extremely toxic and must be handled with care (if at all). I'm told the effects are not pretty.

I think the "iodine" crystals the teacher used were probably Nitrogen Tri-iodide (NI3). They are made by dropping iodine crystals into ammonia, letting them react, then filtering them out of the liquid. While wet they are marginally stable, but when dry the touch of a feather will set them off. (No--I've never done it.) FWIW, they are discussed in the Heinlein novel "Farnham's Freehold" as a substitute for dynamite.

flashguy


I belive you are confusing Tungsten with Platinum.
No, I am not. The reference I just accessed says Gold is 19.3 gm/cm3 and Tungsten is 19.25 gm/cm3; Platinum is 21.45 gm/cm3--way heavier (and more expensive).

flashguy




Texan by choice, not accident of birth
 
Posts: 27911 | Location: Dallas, TX | Registered: May 08, 2006Reply With QuoteReport This Post
Sabonim
Picture of Wayniac
posted Hide Post
I laugh at your puny paperweights!
May I present mine?
75 pounds of pure tungsten with protection, of course.






Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming, 'Wow! What a Ride! ~Hunter S. Thompson
 
Posts: 1439 | Location: Florida | Registered: September 06, 2006Reply With QuoteReport This Post
Member
Picture of heisrizn
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quote:
Originally posted by apf383:
......if you dont need all 2 inches.


Said no one ever.....


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Posts: 1549 | Location: Fayetteville, NC | Registered: April 05, 2011Reply With QuoteReport This Post
Spectemur Agendo
Picture of brecaidra
posted Hide Post
Some of the reviews are amusing: "By golly, that's a heavy cube sure enough."

I think it would be fun to ask people to pick up the tungsten and the aluminium cubes at the same time.




SIGforum's triple minority


"It can't rain all the time." - Eric Draven
 
Posts: 16993 | Location: IA | Registered: May 28, 2009Reply With QuoteReport This Post
Ammoholic
Picture of Skins2881
posted Hide Post
quote:
Originally posted by Wayniac:
I laugh at your puny paperweights!
May I present mine?
75 pounds of pure tungsten with protection, of course.





What is the purpose of that?



Jesse

Sic Semper Tyrannis
 
Posts: 21348 | Location: Loudoun County, Virginia | Registered: December 27, 2014Reply With QuoteReport This Post
Sabonim
Picture of Wayniac
posted Hide Post
Radioactive shielding. This is an internal storage vault for a radioisotope (iridium192). I salvaged it from a medical device called a "high dose rate afterloader."



Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming, 'Wow! What a Ride! ~Hunter S. Thompson
 
Posts: 1439 | Location: Florida | Registered: September 06, 2006Reply With QuoteReport This Post
Comic Relief
Picture of Eponym
posted Hide Post
quote:
Originally posted by Jim Shugart:
<snip> It’s pricey but I’m old and can’t take it with me.
Sure you can, although the pallbearers may say "Oomph. Damn, what's he got in there, his tungsten collection?!" Smile
 
Posts: 4828 | Location: Indianapolis, IN | Registered: September 28, 2005Reply With QuoteReport This Post
Thank you
Very little
Picture of HRK
posted Hide Post
quote:
What is the purpose of that?



It's a knife holder, duh! Big Grin
 
Posts: 24676 | Location: Gunshine State | Registered: November 07, 2008Reply With QuoteReport This Post
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