Under ([Chat]) Pressure
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Neat-o, mosquito!Registered User regular
Neat-o, mosquito!Registered User regular
Unnnnghhhh oh no I have responsibilities on this internet forum now what if I fuck it up
Under Pressure
Pressure also has beneficial uses though! Like making diamonds!
This is a cool book about making diamonds!
Diamonds can also do cool things to light!
"Under Pressure" is a 1981 song recorded by Queen and David Bowie. It marked Bowie's first released collaboration with another recording artist as a performer, and is featured on Queen's 1982 album Hot Space. The song reached #1 on the UK Singles Chart. It was also number 31 on VH1's 100 Greatest Songs of the '80s.
Under Pressure
Pressure also has beneficial uses though! Like making diamonds!
There are several methods used to produce synthetic diamond. The original method uses high pressure and high temperature (HPHT) and is still widely used because of its relatively low cost.
In the HPHT method, there are three main press designs used to supply the pressure and temperature necessary to produce synthetic diamond: the belt press, the cubic press and the split-sphere (BARS) press.
The original GE invention by Tracy Hall uses the belt press wherein the upper and lower anvils supply the pressure load to a cylindrical inner cell. This internal pressure is confined radially by a belt of pre-stressed steel bands. The anvils also serve as electrodes providing electrical current to the compressed cell. A variation of the belt press uses hydraulic pressure, rather than steel belts, to confine the internal pressure.[37] Belt presses are still used today, but they are built on a much larger scale than those of the original design.[38]
The second type of press design is the cubic press. A cubic press has six anvils which provide pressure simultaneously onto all faces of a cube-shaped volume.[39] The first multi-anvil press design was a tetrahedral press, using four anvils to converge upon a tetrahedron-shaped volume.[40] The cubic press was created shortly thereafter to increase the volume to which pressure could be applied. A cubic press is typically smaller than a belt press and can more rapidly achieve the pressure and temperature necessary to create synthetic diamond. However, cubic presses cannot be easily scaled up to larger volumes: the pressurized volume can be increased by using larger anvils, but this also increases the amount of force needed on the anvils to achieve the same pressure. An alternative is to decrease the surface area to volume ratio of the pressurized volume, by using more anvils to converge upon a higher-order platonic solid, such as a dodecahedron. However, such a press would be complex and difficult to manufacture.[39]
A schematic drawing of a vertical cross-section through a BARS press: the synthesis capsule is surrounded by four tungsten carbide inner anvils. Those inner anvils are compressed by four outer steel anvils. The outer anvils are held a disk barrel and are immersed in oil. A rubber diaphragm is placed between the disk barrel and the outer anvils to prevent oil from leaking
Schematic of a BARS system; the size of the outer barrel is reduced for presentation purposes
The BARS apparatus is the most compact, efficient, and economical of all the diamond-producing presses. In the center of a BARS device, there is a ceramic cylindrical "synthesis capsule" of about 2 cm3 in size. The cell is placed into a cube of pressure-transmitting material, such as pyrophyllite ceramics, which is pressed by inner anvils made from cemented carbide (e.g., tungsten carbide or VK10 hard alloy).[41] The outer octahedral cavity is pressed by 8 steel outer anvils. After mounting, the whole assembly is locked in a disc-type barrel with a diameter about 1 meter. The barrel is filled with oil, which pressurizes upon heating, and the oil pressure is transferred to the central cell. The synthesis capsule is heated up by a coaxial graphite heater and the temperature is measured with a thermocouple.[42]
This is a cool book about making diamonds!
Diamonds can also do cool things to light!
Diamond has remarkable optical characteristics. Because of its extremely rigid lattice, it can be contaminated by very few types of impurities, such as boron and nitrogen. Combined with wide transparency, this results in the clear, colorless appearance of most natural diamonds. Small amounts of defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (lattice defects), green, purple, pink, orange or red. Diamond also has relatively high optical dispersion, that is ability to disperse light of different colors, which results in its characteristic luster. Excellent optical and mechanical properties, combined with efficient marketing, make diamond the most popular gemstone.
| Zinnar on most things | Avatar by Blameless ClericPsycho Internet Hawk wrote: »
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Find a copy of the Feynman lectures on physics. Especially the series labled "Six Not So Easy Pieces". Maybe spend a little time beforehand refreshing yourself on high-school level trig and vector math (because he goes rather fast).
It's all there in the math. Sometimes, often times with any physics done in the last 100 years, there is no intuitive "picture" to go along. Sometimes the analogies never quite work. Regretfully, common sense is not a valid means of determening the truth or falsehood of a scientific theory because common sense is based on human experience and these theories are dealing with things outside the realms of experience.
but they're listening to every word I say
It's something that is easy to understand in terms of waves (due to group and phase velocity), but less so for particles. You can't have photos slowing down as such, so the picture you need is that they travel along a longer path.
And it's how Cerenkov radiation does make sense.
Also what the f video are they talking about in that stupid soon to be locked thread?
pleasepaypreacher.net
Grabbed The World Is Bigger Now today, by Euna Lee- the other journalist held in North Korea last year- apparently she was one of the Tech TV people that G4 ate at the merge.
Steam | Twitter
How tall is Inquisitor?
TMNT
I didn't see that I had to do this for a second
It is dead, but I suspect it will not lie down.
the "no true scotch man" fallacy.
I think my sister could pull off Rose, actually.
Any chance you could get Frankie to go as Rose's mother? That's a pretty un-elaborate costume too, pretty much just a nice dress with the long pink scarf and a martini glass.
If that works out, then we have:
John: me!
Rose: my sister
Dave: ????
Jade: ????
John's Dad: Will
Rose's Mother: Frankie
Dave's Bro: Inqi
Jade's Grandfather: ????
I seem to remember at least one identical thread (same topic, also a new poster etc...) a while back. Maybe two, my memory is a bit fuzzy.
Because they failed.
HARD.
are you
You have failed in your life as a chatter, as a human being, as someone who lets people cum on their face. YOU FAIL SIR GOOD DAY!
pleasepaypreacher.net
From how I understand it is that in something denser like diamond, the photons collide with other particles, and while they don't have mass per se, they still take longer to go through the material, and thus if you shone a light through a diamond and next to it, technically the light path THROUGH the diamond would take longer to reach the other side than the other one
That shit is burned in my memory forever.
If I ever get Alzheimers I'll forget my own name before I forget that "poisonous mushroom" rhymes with "speaker that booms"
the "no true scotch man" fallacy.
I almost want an excuse to smack Plain Girl for schematizing "post-op transfolk" as a group.
I rate atrocities differently than crimes.
Steam | Twitter
For me its the theme to giligans island. I'll always remember that.
pleasepaypreacher.net
and now there is an opening for a really bad joke
Will needs to be the dog.
the "no true scotch man" fallacy.
I'm not sure what you're saying but I reflexively agree
Frankly, I'd be happy just to have me and my sister as John and Rose and have Will and Frankie as John's Dad and Rose's Mother.