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Iridium

Iridium

(Science: chemistry, element) a rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4.

iridium usually occurs as a native alloy with osmium (iridosmine or osmiridium), which may occur alone or with platinum. Iridium, as an alloy with platinum, is used in bushing the vents of heavy ordnance. It is also used for the points of gold pens, and in a finely powdered condition (iridium black), for painting porcelain black.

atomic weight: 192.5

Abbreviation: ir

Origin: NL, fr. L. Iris, iridis, the rainbow. So called from the iridescence of some of its solutions. See iris.


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Re: two different color eyes

Multi colored eyes are called here in the US, heterochromia iridium. my ex-father-in-law was half native-american and had one brown eye and one hazel-green eye . he also had no facial hair for a beard, lots of curly / dark hair on his head, and very little ...

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by LeLu
Sat Jan 14, 2012 7:55 am
 
Forum: Human Biology
Topic: two different color eyes
Replies: 141
Views: 277464

Re: two different color eyes

... of melanin indicates hypoplasia. Heterochromia of the eye (heterochromia iridis or heterochromia iridum; the common wrong form "heterochromia iridium" is not correct Latin) is of two kinds. In complete heterochromia, one iris is a different color from the other. In partial heterochromia ...

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by CaitlynLillis
Fri Dec 09, 2011 10:14 pm
 
Forum: Human Biology
Topic: two different color eyes
Replies: 141
Views: 277464

Re: two different color eyes

... and the iris pigment (epithelium) , and the cellular density of your iris stroma. "Lost" melanocytes are the cause of heterochromia iridium (having two different coloured eyes) , but it is also due to hereditary genetics, genetic mosaicism, and or because of disease or injury. I'm ...

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by Melanin93
Fri Jun 11, 2010 12:33 am
 
Forum: Human Biology
Topic: two different color eyes
Replies: 141
Views: 277464

Re: two different color eyes

I have exactly the same, one eye is blue and the other is half blue / half brown. I read up on it and it is called heterochromia iridium or so it seems, I am no doctor but it describes my eyes perfectly, its to do with the pigment ! check out wikipedia or http://ask.yahoo.com/20020724.html, ...

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by Jennyb84
Mon Feb 16, 2009 10:35 pm
 
Forum: Human Biology
Topic: two different color eyes
Replies: 141
Views: 277464

two different color eyes

We learned this in my biology class, and in no way am I qualified to to say anything firther than that I think it is called Heterochromia iridium, or so says my teacher. But I had looked this up earlier finding it interesting and found an internet site that I can actually understand. http://ask.yahoo.com/20020724.html ...

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by CurlyQe
Fri Jul 21, 2006 11:02 pm
 
Forum: Human Biology
Topic: two different color eyes
Replies: 141
Views: 277464


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