41–50 of 111 posts
Yes. There’s not applicable commercially viable things based on graphene yet. But superconductivity will be a revolution in many ways and especially in computing.
So how is that coming along. It seems like I've been hearing about graphene for ages now.
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Superconductivity would revolutionize transportation, low cost medical imaging with MRIs, and weapons. Lots of weapons.
I understand what superconductivity is and how it can revolutionize things in general. But why those things in particular? So transport for example - better maglev trains?
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I'm definitely not an expert, but just because you need force to go around corners doesn't mean you need work. An unchanging magnetic field in fact exactly accomplishes this, as it always accelerates an electron perpendicular to its motion, thereby leaving the energy of the electron unchanged.
That sounds a lot like a slingshot maneuver around a planet to get more momentum. Strictly speaking you're taking energy from the planet/sun to do so. An unchanging magnetic field still exists in the real universe, and I find it difficult to believe that it would be completely unaffected by the interaction. fwiw I'm also no expert edit: I'm taking unchanging to be a practical implementation of say a permanent magnet…
In other words, you can change the direction of the velocity vector without doing work, as long as the magnitude stays the same (ignoring potential energy here).
In fact, a magnetic field is unable to do work, since it always acts perpendicular to the direction of movement of the charge that it acts upon.
Holy guac, room temperature superconductivity seems almost science fiction-y but just imagine the disruption it would make. I would be particularly excited to experience how much electric motors and energy transfer/storage and conversion would improve.
Graphene was going to transform everything. Years ago.
Earlier quoted context omitted.
Superconductivity would revolutionize transportation, low cost medical imaging with MRIs, and weapons. Lots of weapons.
I understand what superconductivity is and how it can revolutionize things in general. But why those things in particular? So transport for example - better maglev trains?
Fairly shocking to me that Yuan Cao received literally a single glancing mention here, but he was clearly the one who actually made the pivotal discovery, and is the first author on the Nature paper ( https://www.nature.com/articles/nature26154 ), and was the one named to the Nature 10 in 2018 for his discovery. Really mind boggling that this entire piece focuses all the attention on his supervisor and almost neglect…
Fairly shocking to me that Yuan Cao received literally a single glancing mention here, but he was clearly the one who actually made the pivotal discovery, and is the first author on the Nature paper ( https://www.nature.com/articles/nature26154 ), and was the one named to the Nature 10 in 2018 for his discovery. Really mind boggling that this entire piece focuses all the attention on his supervisor and almost neglect…
Cynical me asks isn't that how it works for PhD students?
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I understand what superconductivity is and how it can revolutionize things in general. But why those things in particular? So transport for example - better maglev trains?
A huge amount of energy is wasted distributing electricity for 10s of thousands km. I am not sure how it can help storage though, even if you theoretically can let the electricity spin in a closed loop forever the energy density seems way too low to me.
Pardon my interruption but I searched for 'use' or 'usage' and came up empty. Anyone can tell a regular guy why it's a big deal and what are the applications? ta
Superconductors = flying cars. Finally they are working on something useful!