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gramar explaned | exurb1a
ChaosEngineNo, 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?
Skyguard Laser Defense in Action
gluoniumNote that at :25 the pseudocolor thermogram video shows a huge plume of hot gas emitted from the laser building. What is all that gas? Well, this is a deuterium fluoride adiabatic expansion cooling gas dynamic laser, meaning it acutally uses the light from a flame created by burning ethylene and nitrogen trifluoride and it thus produces a hideously toxic and corrosive exhaust mixture of hydrogen fluoride and halogenated hydrocarbons. This particular laser will never be used on any battlefiled (except perhaps in the airborne laser). Instead, a "solid state heat capacity laser" which uses a bank of sequentially cooled gallium arsenide laser diode pumped, sintered neodymium yttrium aluminium garnet slabs as the lasing medium, in this case having no toxic effluents and being powered by electricity alone. Just recently the new all solid state laser reached a ~70 kilowatt output power, very near the expected 100 KW proof of concept milestone. The fact that we only build devices like this for war is depressing to say the least but the technology and science behind them is just incredibly sexy.
Amazing Physics - Someone explain this please? (no sound)
joedirt'shroomy, I had missed your "science" comment before. cold does not make things float. in fact almost every substance contracts when colder. (same weight & smaller volume means what?) so colder means more dense, and most things would sink when colder.
The oddity of water is that it expands when frozen. So it actually floats as ice. And yes, there is ice at the north pole, a lot more in antarctica. (Soon to be a year round unfrozen sea in the artic circle though, so you keep-on keeping on with your global warming is a myth story.) It's as solid as your grasp of science.
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no, it is a super-conductor.
most semi-conductors couldn't generate the kind of EM fields this does. the question is at what temperature can you make a material act like this, so this one is relatively high temp, liquid nitrogen (77K). It's probably an exotic material like Yttrium-Barium-Copper Oxide (Note the resistance goes down to zero).
Semiconductors are what make computers possible. Silicon and III-V materials are used because you can either make the device conduct electrons by applying a voltage, or it doesn't conduct when there is no voltage. That makes a possible 0's and 1's... and Intel Processors when you put a couple million of those devices (switches) together.