>Harvard researchers have studied and observed solid hydrogen under pressure at low temperatures. With increasing pressure we observe changes in the sample, going from transparent, to black, to a reflective metal, the latter studied at a pressure of 495 GPa. They have measured the reflectance as a function of wavelength in the visible spectrum finding values as high as 0.90 from the metallic hydrogen. They have fit the reflectance using a Drude free electron model to determine the plasma frequency of 30.1 eV at T= 5.5 K, with a corresponding electron carrier density of 6.7x10^23 particles/cm3 , consistent with theoretical estimates. The properties are those of a metal. Solid metallic hydrogen has been produced in the laboratory.
>* they have made some metallic hydrogen and have it in a cryostat in liquid nitrogen >* they might leave it under pressure and let it warm to room temperature or they could keep it cold and release the pressure >* they are planning to test for high temperature superconductivity
>If it stays a metal at room temperature and after releasing pressure and was also a superconductor then it would be the holy grail of physics.
>Wikipedia I'll wait till it's actually published. If it will ever be published in a meaningful journal.
John Cook
>Humanity has been looking for this for almost century, literally longer than we've been looking for the Higgs >"hurr it's not important"
Fuck you two, honestly.
Evan Kelly
Heh
Matthew Taylor
>If it will ever be published in a meaningful journal. It's nobel prize worthy research, it will get nature/science at minimum.
Isaiah Brooks
>Photos were taken with a smartphone camera Does Harvard not have enough money for proper sensors?
Tyler Allen
Lol just like the higgs boson it taught us nothing new. We already "know" what it was.
Jaxon Smith
No fuckhead for example it turns out we were wrong about the Higgs' mass several times just like we were wrong about this phase transition.
MH might have immediate engineering applications in the near future too, something we needed data for before we could even start theoretical design developments.
Take your frogposting shit and fuckoff back to whatever shithole you're crossposting from.
Ian Evans
Then how do we know what we find is higgs boson? It can be another particle right. If you say well we know what it would "look like" then I am right and you are wrong.
Andrew White
Why does stuff become more reflective as it gets more dense?
Matthew Cooper
>It can be another particle right. Exactly. So the experimental results teach us something new.
Caleb Wood
Not about higgs boson.
Brayden Cooper
Electron dissociation in metals allows for a much higher bandwidth of quantum states. You can get a superficial understanding of how it works by reading any entry level solid state physics.
Ayden Walker
Sorry I've reached my dialy quota for responding to bait posts.
Blake Nguyen
Or you could try to explain it in laymen's terms. It might not be completely exact, but help that user understand what is going on.
Joshua Butler
If you though it was bait why did you respond?
Lucas Peterson
I have some knowledge and that sounds irrelevant
I would guess the incoming photons would have less room to pass through and the ones that can't get absorbed will be reflected or scattered
Anthony Sanchez
Imagine a single hydrogen atom with one electron at a certain energy state.
There are a number of quantum states the electron can access (and QM principles show that it can't have intermediate energies).
Now when a photon "hits" the electron, the electron can only "absorb" the energy of the photon if the photons at a wavelength (and thus energy) is such that the electron will be in one of its allowed quantized states after the collision (what these allowable states are and how they are calculated all rely on principles developed from quantum mechanics, what's important is that you understand that the electron can't carry intermediate energies).
Absorbance and reflectance of all materials can be tied to these electron energy transmissions. It would take a while to explain all the relevant mechanism, see an analytical chemistry textbook to get a good understanding of it.
Now a material in a metal state has "a sea/soup of electrons binding the atomic cores". Now rather than the electrons' energy states being limited to a single atom/molecule, the "overlap of electron orbits" allows for a very large number of allowable quantized states. Thus a much higher range of wavelengths can be absorbed by the electrons.
Volume doesn't really work the same way on a quantum level as it does intuitively on a macroscopic scale, but for example increasing the the thickness of a material will always increase the total absorbance/reflectance regardless of it's absorbance/reflectance parameters (Beer's law).
Isaiah Morgan
Have my understanding of it. Let's say you have a sheet of any material. The light hitting it will be absorbed and re-emitted. The denser the material the more atoms per unit of area (or volume in the end it doesn't matter). Each atom will contribute to the reflection beam, if the material is disorganized the re-emissions are going to be random in all directions and the material is going to be non-reflective. Now if the material's surface is highly organised then those remissions are going to constructively interfere giving you light which macroscopically has direction. The more atoms you have interfering the more intense the reflection. This guy seems to know a bit more.
Samuel Young
Consider diamond please. It has almost nothing to do with packing density.
Juan Young
Did you not read this answer metals are quite more dense in their quantum states.
Isaac Morris
What do you mean, diamonds are dense and reflective?
Wyatt Reed
It's has less reflectance\absorbance (or alternatively higher transmittance) than metal sheets of equivalent thickness.
1. I wrote (You)
2. Diamond has an atomic density of [math] 1.77 \times 10^{23} [/math] while graphite has [math]1.14 \times 10^{23} [/math] and Zinc metal has [math]0.657 \times 10^{23} [/math].
Not gonna lie, I'm a bit fucking mad right now. I need a break from the internet.
Luke Wood
Calm your tits. I wrote and with you so mad I'm trying to figure out what I said wrong. What you are trying to say is that diamond even though denser than some metals it's less reflective. But I can't see how having more wave functions (metals have way more) constructively interfering doesn't lead to more intense reflections.
Aiden Cooper
I wrote And I suck huge cocks all day long.
Ayden Reyes
8 microns by 1.2 microns.
Wew lad.
Dylan Foster
>finally >implying you knew about it before reading this month's Popsci magazine
Isaiah Murphy
I like your humour
Evan Richardson
> projecting
Isaiah Campbell
>photos were taken with a smarphone camera
Robert Powell
He said his quota was reached, just let it go or he'll get fined.
Brody Anderson
Listen H.
Fuck you.
Ok.
Thanks.
Charles Richardson
>Photos were taken with a smartphone camera at the ocular of a modified stereo microscope jesus christ, not even a shitty CCD setup, a goddamn cellphone camera, and they're going to publish this?
Christian Smith
inb4 it's used by mercedes as a fuel for their 2018 car. >115-120MJ/kg
Bentley Jones
ELON MUSK BTFO
Justin Williams
>HYPE
Wyatt Bell
I mean, it's not as important as the transmittance spectra. The photo doesn't really matter, it's just eye candy that doesn't contribute to the paper.
Still though couldn't they just fucking get a real camera. Fucking Harvard poorfags.
