hi friends
i want to know whether it is possible to change the color of the gold with by using nano-technology or not and if it is possible how can we do it?
i want this knowlege for a gold factory which wants to increase the color quality of gold.
thank you very much
QUOTE (rpenner+Jun 6 2011, 02:06 PM)
http://en.wikipedia.org/wiki/Cranberry_glass
http://en.wikipedia.org/wiki/Colloidal_gold
http://en.wikipedia.org/wiki/Purple_of_Cassius
Anti spammer post only - support a topic in each area of the index to take spam posts off the index top spots please.
http://en.wikipedia.org/wiki/Colloidal_gold
http://en.wikipedia.org/wiki/Purple_of_Cassius
Anti spammer post only - support a topic in each area of the index to take spam posts off the index top spots please.
Saith the spammer... 
University of Southampton team has found new technique through which they are able to change the color of world's most precious metal by embossing tiny raised and indented pattern onto the metal surface that can change the way it absorbs and reflect light,so to the human eye it doesn't appear "golden" in color at all.
Really great invention has done by researcher..
Really great invention has done by researcher..
University of Southampton team has found new technique through which they are able to change the color of world's most precious metal by embossing tiny raised and indented pattern onto the metal surface that can change the way it absorbs and reflect light,so to the human eye it doesn't appear "golden" in color at all.
Really great invention has done by researcher..
Really great invention has done by researcher..
The gold color of gold is based on a time shift in the reflected light due to relativity. The outer electrons of gold move at a significant fraction of the speed of light. The light that reflects off the surface of gold has a yellow shift. This is based on relativistic quantum chemistry.
Relativistic quantum chemistry
The trick would be to alter the speed of the electrons so we can create other time shifted colors. Easier said then done.
Relativistic quantum chemistry
The trick would be to alter the speed of the electrons so we can create other time shifted colors. Easier said then done.
QUOTE (MDT+Nov 20 2012, 04:00 PM)
The outer electrons of gold move at a significant fraction of the speed of light.
Wrong - did you even read the article? ..... imbecile.
Only the innermost electrons are subject to significant relativistic affects - simply common sense for anyone possessing a head that hasn't been pulverized by multiple strikes of a sledgehammer.
Wrong - did you even read the article? ..... imbecile.
Only the innermost electrons are subject to significant relativistic affects - simply common sense for anyone possessing a head that hasn't been pulverized by multiple strikes of a sledgehammer.
QUOTE (bharatbuk+Nov 20 2012, 11:48 AM)
University of Southampton team has found new technique through which they are able to change the color of world's most precious metal by embossing tiny raised and indented pattern onto the metal surface that can change the way it absorbs and reflect light,so to the human eye it doesn't appear "golden" in color at all.
Really great invention has done by researcher..
How freakingly stupid is that!
Must instantly coat my £1,000,000 24 carat bling in that faeces, so I look like a 3rd world peasant $2 bejeweled fuckup.
Really great invention has done by researcher..
How freakingly stupid is that!
Must instantly coat my £1,000,000 24 carat bling in that faeces, so I look like a 3rd world peasant $2 bejeweled fuckup.
QUOTE
The outer electrons of gold move at a significant fraction of the speed of light.
Wrong - did you even read the article? ..... imbecile.
Only the innermost electrons are subject to significant relativistic affects - simply common sense for anyone possessing a head that hasn't been pulverized by multiple strikes of a sledgehammer.
Wrong - did you even read the article? ..... imbecile.
Only the innermost electrons are subject to significant relativistic affects - simply common sense for anyone possessing a head that hasn't been pulverized by multiple strikes of a sledgehammer.
I think you got it backwards;
QUOTE (->
| QUOTE |
| The outer electrons of gold move at a significant fraction of the speed of light. Wrong - did you even read the article? ..... imbecile. Only the innermost electrons are subject to significant relativistic affects - simply common sense for anyone possessing a head that hasn't been pulverized by multiple strikes of a sledgehammer. |
I think you got it backwards;
Thus, non-relativistic gold would be white. The relativistic effects are raising the 5d orbital and lowering the 6s orbital.[9]
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