Have scientists produced a speck of solid metallic hydrogen?
Scientists using a diamond vise think they have produced the first speck of solid metallic hydrogen, potentially capable of being a superconductor at normal temperatures.
While the scientists who performed the experiment believe they have succeeded, others are skeptical. Read it all. This is quite fascinating research.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Scientists using a diamond vise think they have produced the first speck of solid metallic hydrogen, potentially capable of being a superconductor at normal temperatures.
While the scientists who performed the experiment believe they have succeeded, others are skeptical. Read it all. This is quite fascinating research.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
The new Feishman and Pons?
If this is indeed true in all of its aspects, what mechanism is proposed that would allow metallic hydrogen under such intense pressure to remain in its metallic state sans the pressure?
….”what mechanism is proposed that would allow metallic hydrogen under such intense pressure to remain in its metallic state sans the pressure?”
The same mechanism that lets a diamond stay in its metastable state when the temperature drops and the pressure is let up and the thing stays a diamond instead of going back to graphite, until you raise the temperature above the critical point again, of course.
Metastable states are tricky that way.
Sometimes the critical temperature is well *below* room temperature. Sometimes they are several thousand degrees Kelvin.
Ya dinna knooo, till you try it laddee!
They haven’t dropped the pressure yet. I assume they’ll try that first. They haven’t raised the temperature yet.
They may be just a wee bit nervous!
Slightly off subject but related to hydrogen and cold … an interesting read
Absolute Zero and the Conquest of Cold by Shachtman traces the quest to get as cold as it gets