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A Stable Plasma Ring Has Been Created In Open Air For the First Time Ever (futurism.com)
New submitter mrcoder83 shares a report from Futurism: Engineers from the California Institute of Technology (Caltech) have been able to create a stable plasma ring without a container. According to the Caltech press release, it's "essentially capturing lightning in a bottle, but without the bottle." This remarkable feat was achieved using only a stream of water and a crystal plate, made from either quartz and lithium niobate. The union of these tools induced a type of contact electrification known as the triboelectric effect. The researchers blasted the crystal plate with an 85-micron-diameter jet of water (narrower than a human hair) from a specially designed nozzle. The water hit the crystal plate with a pressure of 632.7 kilograms of force per centimeter (9,000 pounds per square inch), generating an impact velocity of around 305 meters per second (1,000 feet per second) -- as fast as a bullet from a handgun. Plasma was formed as a result of the creation of an electric charge when the water hit the crystal surface. The flow of electrons from the point of contact ionizes the molecules and atoms in the gas area surrounding the water's surface, forming a donut-shaped glowing plasma that's dozens of microns in diameter. Caltech posted a video of the plasma ring on their YouTube channel.
"Gharib’s team also noticed another peculiar phenomenon: the plasma ring emitted distinct radio frequencies, as evidenced by the high levels of static the engineers’ mobile phones picked up during the experiment. “That’s never been seen before. We think it’s because of the piezo properties of the materials that we used in our experiments,” Pereira explained."
Sounds to me like he's never heard of the plasma speaker.
https://en.wikipedia.org/wiki/...
The hell kind of weird bastardized units are these writers using? Kilograms are mass. Newtons are force. Do you mean 9.8N, which is about the force of 1kg under 1g (g-force, not grams) of acceleration?
-Forrest Cameranesi, Geek of all Trades
"I am Sam. Sam I am. I do not like trolls, flames, or spam."
.. is "either quartz", and did anyone else find their youtube video a little short of details?
Either/or, Neither/nor.
Come the fuck on. Try being less lazy than using a simple spelling check.
Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
If you had told me half a century ago that there could be any land that might eclipse the US in terms of technology and progress, I would have called you insane. Remember? The time when the US built those huge rockets to go where nobody has gone before?
20 years ago I would probably have said something along the lines of "Yeah, Japan. but they can't compete in raw production power"
Today, I'd probably ask if there is actually still any research and development done in the US, and whether there is actually any US-owned corporation left, or whether the Chinese are finally done taking over.
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
"generating an impact velocity of around 305 meters per second (1,000 feet per second)"
Ok, the actual science was done measuring meters per second, the press release rounds it to a nice round number of 1000f/s for American audience, and then that rounded number is converted to a quite exact figure of 305m/s.
In the actual paper, the experiment was done with a wide range of velocities. Over 200 m/s was required velocity to generate the effect.
made from either quartz and lithium niobate
1) Either quartz or niobate? 2) Quartz and niobate? 3) Either quartz and niobate or _____?
We'll make great pets
You might also remember that a lot more happened in the 60s that made the US the top of the world science hub. But let's stay with the moonshot, while the engineering was important, the whole mission hung on WAY more than the ability to make a large rocket go up. There's logistics, process management, raw manpower and on top of all an economy to power the whole deal. Frankly, making a rocket go up was certainly the most visible of the whole endeavor, but in the end only the tip of the iceberg.
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
How long is that in parsecs? I want to figure out how many Kessel runs that is.
#naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
I submitted this FOUR DAYS AGO, with links to the Caltech aticle!
They're not. Get over it.
SI has a perfectly good unit of force (the newton). It will be really great when SI advocates actually start using SI, rather than bastardizing it with things like "kilograms of force"....
"I do not agree with what you say, but I will defend to the death your right to say it"
Oh yes,i barely can wait for a galaxy note phone with a plasma ring as it's battery.
Nothing possibly could go wrong.