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gramar explaned | exurb1a
No, but I'm wearing one made from Titanium right now.
There's also Helium, Lithium, Beryllium, Sodium, Magnesium, Potassium, Calcium, Scandium, Vanadium, Chromium, Gallium, Germanium, Selenium, Rubidium, Strontium, Yttrium, Zirconium, Niobium, Technetium, Ruthenium, Rhodium, Palladium, Cadmium, Indium, Tellurium, Caesium, Barium, Hafnium, Rhenium, Osmium, Iridium, Thallium, Polonium, Francium, Radium, Actinium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, Flerovium, Moscovium, Livermorium, Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium,* and Lawrencium.
* oxford comma for life!
Aluminum or aluminium?
I don't know, would wear a ring made out of platinium?
Bose-Einstein Condensates: The Fifth State of Matter
ahhh but have you ever heard of optical cooling of erbium doped crystals using lasers? that is a venture into incredibly weird non-intuitive physics. shine a laser at a chunk of crystal and it gets cold! there are some who think it could actually be used for common refrigeration.