Originally Posted by Particle
A couple of comments:
"Faster" is perhaps a poor choice to describe what they mean. The junction switches states between on and off in less time. I don't think they're commenting on the volume of power delivered.
Graphene is difficult to use as a semiconductor because its band gap is so small. It's a hair's breadth away from being a straight conductor.
After reading this and the article again, I think you're right. I think it was a very poor choice of words by the article that caused the confusion.
Originally Posted by Diablosbud
I actually just had a "what the hell" moment. But then I looked up an article about superconductivity and apparently superconductors have a resistance so close to zero that it results in faster conductivity. Don't quote me on this because I haven't taken a physics class in a long time, but here is the article I read: http://www.supraconductivite.fr/en/index.php?p=supra-resistance-supra
. This occurs because the elections are not sensitive to collisions anymore. Perhaps graphene conducts better because it is a superior superconductor?
Keep in mind that electrical resistance and what we see as "resistance," or friction, in physical items are not quite the same. Physical resistance tends to talk about slowing down or resisting motion, where as electrical resistance speaks to the efficiency of a circuit, or how much current is allowed through.
Although, I guess one could argue that friction turning motion into heat is similar to a resistor turning current into heat.
You can't actually change the speed at which electricity travels, it is a constant (unless science does something freaky). From what I can gather, and I'm no expert either, that link is talking about the lack of resistance causing no loss in the amount of electrons flowing through the superconductor, which is not the case when a resistor is placed in a circuit.
Without resistance, the amount of energy in a truly zero-resistance superconductor would be able to be stored indefinitely.
Originally Posted by NihilOC
Wave propagation speed is different for electrons/photons, no? I'm just guessing since electrons have mass, may still be wrong in terms of simply transmitting a wave.
Also depends on medium anyway. Even the speed of light is only constant in a vacuum.
Photons have mass as well. Electricity and light move at the same speed, from my understanding, but I've certainly been wrong before...
Is that correct? Wouldn't an non-constant speed-of-light coefficient completely skew e=mc^2?Edited by SectorNine50 - 8/21/13 at 10:00pm