Slashdot Mirror
X-ray Facility To Simulate Conditions At Earth's Core
Diggester sends this quote from an article at the BBC:
"The ID24 beam line at the European Synchrotron Radiation Facility will use X-ray beams to subject iron and other materials to extraordinary temperatures and pressures. How the X-rays are absorbed should give insight into the mysterious processes going on at and near the Earth's core. For example, the work could unravel why the Earth's magnetic field can 'flip.' ... The samples are compressed at a pressure millions of times higher than that on the Earth's surface. High-power lasers are then fired through the diamonds at the samples, heating them to higher than 10,000C. Then X-rays are used as a probe to determine the precise composition and chemistry of samples."
have lot's of Crowbars on site
. . . the Earth's core might have concealed weapons in there . . .
. . . and fondle the Earth's fiery crotch just to make sure . . .
Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
Slashdot has dumbed down, and it's partly your fault.
We're doing science and we're still alive...
Press release at http://www.esrf.eu/news/general/inauguration-ID24/index_html/
This post contains no rudeness or derision of any kind. All arguments are friendly. Terms and exclusions may apply.
The government should invest in tin foil hat suppliers. By the looks of it, it would pay a dividend many times over.
:/ I thought that post was sarcastically funny.
:/ I thought that post was sarcastically funny.
Me too, but it didn't kiss someone's ass enough so it got down-modded. Probably by the same people who want schools to hold soccer games where no scores are kept because defeat might mean someone's feelings get hurt.
Just like those idiot schools don't realize that the sting of defeat is a great motivator to cause someone to try harder and sharpen their skills, the idiot mods don't realize or appreciate that sometimes people really do say stupid things and the fault there is not with the person who recognizes it as stupid. Especially when it's some kind of black-hole end-of-the-world Chicken Little type of deal like this one was.
I mean shit, cosmic rays have more energy than any particle accelerator we've ever built -- if black holes were a real danger they should be happening all the time. If that guy took even 2 seconds to think about this before speaking he'd have never made that post. It was a stupid post. That's just a fact. Adult people who cannot handle facts are really pathetic.
Let's see... X-rays, check... diamonds, check... high-powered lasers, check...
My other car is a 1984 Nark Avenger.
It's obvious that it's full of dinosaurs.
All glory to Arstotzka!
The magnetosphere already comes with two or more holes naturally.
The summary makes its seem like they're using the X-rays to do the heating and compressing when in reality the material is compressed in a diamond anvil cell. The X-rays are used to study how the material changes under heat and pressure. The original article makes the same mistake.
If I disagree with you it's because you are wrong.
would a significant change in core temp cause a flip? what would cause the core to heat up? Electric Universe theory?
...giant molten ball of high pressure iron!
would a significant change in core temp cause a flip? what would cause the core to heat up?
Apparently, a regression in Linux's power management.
I read TFA and all I got was this lousy cookie
Any bets that a Time Cube forms and starts tearing up Bibles?
Humans are wiser at birth than after fully educated – for they are taught negativistic anti-life ONEism that does not exist on opposite + & - pole Earth.
Everyone knows the magnetic shift is caused by TIME CUBE!
Seriously, we have no idea what's down there. Sounds like a fun experiment.
I didn't realize it could go any lower.
Core temperature is driven by pressure from the gravitational attraction of every atom on and around Earth. This causes enough heating to make the mantle to become liquid. The mantle itself is liquid sodium which conducts electricity. The core itself is mostly iron/nickel and is under such high pressure it remains a solid (Clausius Clapeyron relation
At the Earth's core, pressure is around 330 - 360 gigapascals, 330 million times atmospheric pressure.
Deep Water accident was only 120,000 times atmospheric pressure. There isn't any danger of the core cooling down.
The effect of convection currents and the Earth's spin forces the liquid mantle to start rotating which in turn causes magnetic fields to form. This was the subject of a scientific experiment.
The idea is that these individual rotating eddies can at times reinforce each other to form a strong dipole system as we have now, and at other times cancel out or form a weak multipole system, which would last until a new strong dipole system formed.
There are other theories that different layers of the Earth rotate at different speeds, having other electromagnetic effects on the Earth.
Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
...by firing a really expensive X-ray laser at it.
"OK, plasma spectrograph says it's iron. Fire up the Xaser." ...sometime later...
"OK. Xaser spectrometry says it's iron."
Nope. I really cannot see the point.
Operation Guillotine is in effect.
Diamond anvil cell experiments with syncrotron radiation to evaluate the contents have been around for decades. This is an example of journalistic telephone, where a press release from an institute PR office is amped up in each retelling. By the time it makes it to Slashdot, it's completely unrecognizable.
It's HOT!!! Very HOT!!!! Oh and lots of pressure..
Have you fscked your local propeller head today?