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Registered Member #75
Joined: Thu Feb 09 2006, 09:30AM
Location: Montana, USA
Posts: 711
If I remember the physics of atoms and quanta correctly - and it's been a while! - this is a pretty well-know effect that is used to calculate the emission spectra even for much lighter atoms then lead. The article makes it sound like a new discovery, but I think the basic principle is so fundamental that it's been known for a long time. It's fascinating tough, since it's definitely an area where quantum and relativist effects mix - something usually reserved for black holes!
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
...something usually reserved for black holes!
Maybe speakers will turn out to be variable black holes according to this discovery, as old as it may be 0_o.
When i start thinking that deeply into things, i get creeped out and confused and i end up with my thoughts all foggy. That is why i prefer to not think too much about religion, and outer space! It is all just beyond my capability to understand.
Registered Member #1134
Joined: Tue Nov 20 2007, 04:39PM
Location: Bonnie Scotland
Posts: 351
The unusual gold colour of the element Gold, is also down to relativistic effects.
The electrons travel around the nucleus of the Au atom so fast, that the increased electron mass causes certain electron shells to contract. This causes the gold atom to absorb light well into the blue end of the spectrum, rather than just at UV, giving it its characteristic gold colour.
Relativistic effects are also responsible for Mercury being liquid at room temperature.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
hmm. Wonder if this is why lead doping of the thallium superconductors makes the transition temperature increase?
Ages ago I read about some element which was allegedly discovered in ancient times that appeared pinkish-red. Nowadays it is accepted that it was the oxide of mercury (aka cinnabar) or a gold/copper alloy.
I wonder if superheavy stable elements such as the theorised Element 122 would behave in the same way as gold? Would also offer an insight into their magnetic and electrical properties.
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Thallium's electrons are also relativistic. Come to think of it, so are hydrogen's and everything in between. It's not as if "relativistic" suddenly switches on at some particular fraction of C.
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Relativistic effects make lead acid batteries work?!
