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Did someone say plasma airplane wings? How cool is that...
http://www.pbs.org/wgbh/nova/next/space/plasma-air-control/
We just watched moving air being controlled by plasma, the lesser-known, fourth state of matter which also exists in the blistering core of our sun. And while such lab demonstrations are both uncanny and awe-inspiring, these so-called plasma actuators could produce far more impressive benefits in the real world, especially for the aviation and wind power industries, and maybe even the trucking business.
On airplane wings, for example, tiny plasma actuators could help planes fly more safely, more efficiently, and with greater stability and control. They can speed, slow or divert air flows in ways that can cut drag, fuel use, and CO2 emissions by as much as 25%, researchers estimate. Some experts even think that these devices might someday replace conventional flight control surfaces such as flaps and ailerons. Imagine witnessing the ghoulish purple glow of the lab demo from the window seat of a transcontinental flight.
(Score: 0, Disagree) by Anonymous Coward on Saturday August 27 2016, @10:10AM
Are you fucking kidding me? Plasma exists in fire. Do we need to reinvent fire now? Apparently we do because stupid kids have forgotten a video of fire on your phone isn't real fire [youtube.com].
(Score: 0) by Anonymous Coward on Saturday August 27 2016, @11:27AM
True. More important, as cited from Plasma Physics: Proceedings of the 1997 Latin American Workshop : VII LAWPP 97 [google.com], via https://www.plasma-universe.com/99.999%25_plasma:
"Today it is recognized that 99.999% of all observable matter in the universe is in the plasma state..."
Also: plasma TVs, neon lights, lightning, auroras, etc, etc [wikipedia.org].
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Technical note
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To Soylent devs: I was unable to turn the plasma-universe URL into a hyperlink, probably because it contains a percent sign (%). If put inside the href attribute, the entire tag gets dropped. Using the HTML code for it also fails. As another example, try linking to the Wikipedia page for the percent sign: https://en.wikipedia.org/wiki/%25
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(Score: 0) by Anonymous Coward on Saturday August 27 2016, @11:50AM
People have been looking at plasma forever, but fire is the oldest form of plasma technology that the average person can literally reach out and touch.
(Score: 2) by requerdanos on Saturday August 27 2016, @12:28PM
The presence of plasma in TVs, neon lights, lightning, auroras, matches (potentially), >99% of the known universe, and indeed the aircraft of the article doesn't change the fact that I (and probably lots of other people) can pretty well articulate what makes a solid a solid, a liquid a liquid, and a gas a gas at the molecular level, but my description of plasma off the top of my head starts with "um..." and doesn't improve much from there, other than iterating the above examples. I think that plasma is less well-understood than other, more common (in our nearby environment) states of matter.
Somewhat off-topic, but the wikipedia percent link allows cheating: https://en.wikipedia.org/wiki/%25 [wikipedia.org]
(Score: 0) by Anonymous Coward on Saturday August 27 2016, @12:33PM
my description of plasma off the top of my head starts with "um..."
Just like fire, burning out the way
If I can light the world up for just one day
Watch this madness, colorful charade
No one can be just like me any way
(Score: 1, Interesting) by Anonymous Coward on Saturday August 27 2016, @02:50PM
Same AC here.
I (and probably lots of other people) can pretty well articulate what makes a solid a solid, a liquid a liquid, and a gas a gas at the molecular level, but my description of plasma off the top of my head starts with "um..." and doesn't improve much from there
The shortest explanation: plasma is a fluid (like liquid or gas) that reacts to electric or magnetic fields. Done. You can also mention that it's ionized (which is why it reacts to the E&B fields).
But then, I'm a (novice) researcher working on plasma simulations... "And what exactly are you doing at the university?" is a question I've had to answer very often.
Somewhat off-topic, but the wikipedia percent link allows cheating: " rel="url2html-8293">https://en.wikipedia.org/wiki/%25
Yeah, I know, I just gave it as an example to make sure it's not something with the domain or w/e :)
Also, copy-pasting your text and quoting it does something weird. Looks fine in the edit box, but breaks preview.
(Score: 0) by Anonymous Coward on Tuesday August 30 2016, @02:26PM
a gas becomes a plasma when it has so much energy the electrons are no longer fully bound to their atoms but are moving around semi-freely
(Score: 2) by requerdanos on Tuesday August 30 2016, @05:07PM
Thanks. That's the start on an explanation I can wrap my head around. How do they normally gain this energy?
(Score: 0) by Anonymous Coward on Saturday August 27 2016, @01:47PM
Isn't plasma (and fire) just glowing gas? That's what my physics teacher told me a long time ago.
(Score: 2) by stormwyrm on Sunday August 28 2016, @02:39AM
Most fires that people have had common acquaintance since prehistoric times are not hot enough to have actual plasma.
http://www.plasmacoalition.org/plasma_writeups/flame.pdf [plasmacoalition.org]
A flame from something like an acetylene welding torch, at 3300°C, is hot enough to produce significant quantities of plasma, but more typical fires like those from candles, gas burners, and fireplaces have less than half that temperature and are not hot enough to produce significant quantities of ionised gas, let alone enough that the electromagnetic properties of a real plasma can be demonstrated. The only really common places where plasma could be observed before electricity was developed would have been from lightning bolts and phenomena like St. Elmo's Fire.
Numquam ponenda est pluralitas sine necessitate.
(Score: 0) by Anonymous Coward on Sunday August 28 2016, @02:51AM