b) because unlike other air breathing designs, it doesn't liquefy the oxygen before using it as fuel, it 'merely' takes it to it's vapour point.
Can you point me to a reference describing an air breathing engine that liquefies the incoming air before using it as a fuel? The thermodynamics of that don't sound right to me.
I miss carrying my Swiss Army knife, but I only ever thought I would use it to fix the airplane in an emergency. Without a locking blade, I'd rather attack with my fist than risk cutting my thumb off.
You know the key to what DOD requires might well be related to old hard drives. A ten year old drive has a much bigger magnetic domain for a bit. I even have a couple of 1 gig drives that might not use GMR heads. With the lower density, maybe the magnetic microscope could work.
Science starts with the proposition that the Universe is rational and can be observed in a rational and repeatable manner. Then the observations are worth making.
Google: iphone ad hock deploy
A common use is for beta testers. As an individual dev, I can sign up 100 devices. I expect for $200 I could be an enterprise dev with unlimited deploy. But it is time consuming, I have to get a cert from Apple using the device id and package an App for the specific device. Certainly not worth $10 of my time. With the App Store, I can sell $0.99 apps and make money.
FTA - "a space Katrina, a storm that we should have been prepared for but were not" It says nothing about he relative energy. As it turns out, I am prepared for my bathtub swirl.
Wow, I see some AC beat me to an answer. I was going to ask if that plasma glow discharge you were talking about is AC or DC current? Then I was going to point out that peer review is not actually a popularity contest, we try to accept work that is consistent with observation; and presently the Big Bang is fairly consistent with what we see. I also disagree that Science is inherently controversial, it is inherently unfinished.
Thanks for the link - nice to see a collection against the nuttiness. I'm waiting for my favorite reply, "But the sun is charged, it emits charged particles, what do you think the solar wind is?". I want to help those people....
The voice coil magnet is closed so that the field is strongest between the gap where the voice coil moves. Otherwise the field stays within the magnet. Think about the classic horse shoe magnet. If you connect the ends with a bit of iron, the field is closed.
I only need to know a couple of things: how much heat do I need to remove, and how do I remove the heat? If my numbers were even two orders of magnitude correct, then I know we could remove the heat on a time scale much shorter than the one the volcano explodes on. Not being a geologist, I don't actually care about the rock other than knowing it conducts heat and being able to drill it to get some working fluid down there to remove the heat. To me the most interesting problem now is an engineering one of how do I drill the mix of rock at that temperature. I spent enough time with drillers talking about their mud to know this is a hard problem, but probably only DARPA hard, not impossible. I am not advocating setting off small eruptions like one of the original posts in this thread.
Being a physicist I will assume the entirety of the lava dome is a sphere of radius 12 km; this is a volume of 6,000 cubic kilometers. This give a mass of 1.8 * 10^16 kilograms assuming a density of 3gm/cm^3. I'll set the heat capacity to 1 of course in units (kJ/kg K).
I'm not so good with the equation of state for rock at the pressures down at 10km, so some more assumptions using Google:
"The temperature of basalt lava at Kilauea reaches 1,160 degrees C."- I'll take this as the current temperature of our sphere.
"On average, the geothermal gradient is
approximately 75 degrees F per mile. In volcanically active areas, the
gradient can be as high as 150 degrees F per mile." Now, these numbers are not entierly self consistent, but I'll assume we would like to cool the sphere to 600 degrees C, or a delta of 500 degrees Kelvin. So we need to remove 1.8 * 10^16 kg * 500 K = 1 * 10^22 Joule. US consumption per year is about 2 x 10^22. Now maybe I've got some numbers wrong, because I'd have assumed the energy content under Yellowstone to be much larger than yearly US consumption. But if it is the same then I will argue that we can imagine removing this much energy in a timely fashion. A little work on high temperature deep drilling, inject some water, extract steam. Profit!
But sometimes, very rarely it does. Used to be you could destroy the TRS-80 video driver hardware from assembly language; some monitors still have similar problems. Likewise, some devices if disconnected during a firmware update will never come back. And if it can be fixed with a debug cable, it is not bricked. If you have to swap some ROM chip to fix it, it is bricked.
You may want to use precision words in the discussion. I think there is a little confusion with the use of explosion and combustion between you and the GP. I think the GP is referring to detonation, which is characterized by supersonic combustion. I think you are referring to deflagration, which occurs subsonically. See http://en.wikipedia.org/wiki/Detonation What should be happening in your engine is deflagration. I am not positive, but I think knocking is detonation not deflagration.
High-Tc superconductivity was discovered in 1986; until then it was thought that BCS theory ruled out superconductivity at temperatures above 30 K. The experimental discovery of the first high-Tc superconductor by Karl Müller and Johannes Bednorz was immediately recognized by the Nobel Prize in Physics in 1987.
This was a couple guys testing materials where the equipment cost I think was less than $100K. Publish to Nobel in one year.
Yes, Hooke first described them. But I don't see anywhere that he put them to use as a device. I did not suggest he invented them, but that is the common name these days is it not?
Einstein first noticed the math that suggested a state inversion that would lead to spontaneous coherent emission, but he did not invent the laser.
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b) because unlike other air breathing designs, it doesn't liquefy the oxygen before using it as fuel, it 'merely' takes it to it's vapour point.
Can you point me to a reference describing an air breathing engine that liquefies the incoming air before using it as a fuel? The thermodynamics of that don't sound right to me.
Clippy will man the Super Genius Bar. And they will have Karaoke using that new tech of theirs. Don't forget the $10,000 coffee tables.
Your English is better than Zebano's. And your proofreading is better than Taco's.
Actually, ClearType came from R&D.
And here I thought ClearType was derivative of Apple's TrueType. http://en.wikipedia.org/wiki/True_Type_Font#Microsoft No doubt MS made improvements.
I miss carrying my Swiss Army knife, but I only ever thought I would use it to fix the airplane in an emergency. Without a locking blade, I'd rather attack with my fist than risk cutting my thumb off.
You know the key to what DOD requires might well be related to old hard drives. A ten year old drive has a much bigger magnetic domain for a bit. I even have a couple of 1 gig drives that might not use GMR heads. With the lower density, maybe the magnetic microscope could work.
Science starts with the proposition that the Universe is rational and can be observed in a rational and repeatable manner. Then the observations are worth making.
Google: iphone ad hock deploy
A common use is for beta testers. As an individual dev, I can sign up 100 devices. I expect for $200 I could be an enterprise dev with unlimited deploy.
But it is time consuming, I have to get a cert from Apple using the device id and package an App for the specific device. Certainly not worth $10 of my time. With the App Store, I can sell $0.99 apps and make money.
FTA - "a space Katrina, a storm that we should have been prepared for but were not"
It says nothing about he relative energy.
As it turns out, I am prepared for my bathtub swirl.
Wow, I see some AC beat me to an answer. I was going to ask if that plasma glow discharge you were talking about is AC or DC current? Then I was going to point out that peer review is not actually a popularity contest, we try to accept work that is consistent with observation; and presently the Big Bang is fairly consistent with what we see. I also disagree that Science is inherently controversial, it is inherently unfinished.
Ok, I'll bite. What do you get when you separate the reasonable from the ridiculous claims of Electric Universe? All I get is the nul set.
Good critique of Lerner: http://www.astro.ucla.edu/~wright/lerner_errors.html Dunno why the summary mentions him at all.
Thanks for the link - nice to see a collection against the nuttiness. I'm waiting for my favorite reply, "But the sun is charged, it emits charged particles, what do you think the solar wind is?". I want to help those people....
The voice coil magnet is closed so that the field is strongest between the gap where the voice coil moves. Otherwise the field stays within the magnet. Think about the classic horse shoe magnet. If you connect the ends with a bit of iron, the field is closed.
I only need to know a couple of things: how much heat do I need to remove, and how do I remove the heat? If my numbers were even two orders of magnitude correct, then I know we could remove the heat on a time scale much shorter than the one the volcano explodes on. Not being a geologist, I don't actually care about the rock other than knowing it conducts heat and being able to drill it to get some working fluid down there to remove the heat. To me the most interesting problem now is an engineering one of how do I drill the mix of rock at that temperature. I spent enough time with drillers talking about their mud to know this is a hard problem, but probably only DARPA hard, not impossible. I am not advocating setting off small eruptions like one of the original posts in this thread.
Being a physicist I will assume the entirety of the lava dome is a sphere of radius 12 km; this is a volume of 6,000 cubic kilometers.
This give a mass of 1.8 * 10^16 kilograms assuming a density of 3gm/cm^3.
I'll set the heat capacity to 1 of course in units (kJ/kg K).
I'm not so good with the equation of state for rock at the pressures down at 10km, so some more assumptions using Google:
"The temperature of basalt lava at Kilauea reaches 1,160 degrees C."- I'll take this as the current temperature of our sphere.
"On average, the geothermal gradient is approximately 75 degrees F per mile. In volcanically active areas, the gradient can be as high as 150 degrees F per mile."
Now, these numbers are not entierly self consistent, but I'll assume we would like to cool the sphere to 600 degrees C, or a delta of 500 degrees Kelvin.
So we need to remove 1.8 * 10^16 kg * 500 K = 1 * 10^22 Joule.
US consumption per year is about 2 x 10^22.
Now maybe I've got some numbers wrong, because I'd have assumed the energy content under Yellowstone to be much larger than yearly US consumption. But if it is the same then I will argue that we can imagine removing this much energy in a timely fashion. A little work on high temperature deep drilling, inject some water, extract steam.
Profit!
looks like it has had -zero- impact on the share price
Kind of like the Zune in the first place?
Doesn't seem like the definition should depend on the competence of the user.
But sometimes, very rarely it does. Used to be you could destroy the TRS-80 video driver hardware from assembly language; some monitors still have similar problems. Likewise, some devices if disconnected during a firmware update will never come back. And if it can be fixed with a debug cable, it is not bricked. If you have to swap some ROM chip to fix it, it is bricked.
You may want to use precision words in the discussion. I think there is a little confusion with the use of explosion and combustion between you and the GP. I think the GP is referring to detonation, which is characterized by supersonic combustion. I think you are referring to deflagration, which occurs subsonically.
See http://en.wikipedia.org/wiki/Detonation
What should be happening in your engine is deflagration. I am not positive, but I think knocking is detonation not deflagration.
All EM signals are analog. What are you talking about?
...Does buffalo need more snow ?
Probably not, but Kilimanjaro could use some more. http://en.wikipedia.org/wiki/Kilimanjaro
High-Tc superconductivity was discovered in 1986; until then it was thought that BCS theory ruled out superconductivity at temperatures above 30 K. The experimental discovery of the first high-Tc superconductor by Karl Müller and Johannes Bednorz was immediately recognized by the Nobel Prize in Physics in 1987.
This was a couple guys testing materials where the equipment cost I think was less than $100K. Publish to Nobel in one year.
Being trained as a physicist, I use the dot notation all the time. Thanks, I did not realize that was Newton.
Yes, Hooke first described them. But I don't see anywhere that he put them to use as a device. I did not suggest he invented them, but that is the common name these days is it not?
Einstein first noticed the math that suggested a state inversion that would lead to spontaneous coherent emission, but he did not invent the laser.
My mistake in the title granted. I only meant to suggest such optical notions as color theory. He didn't discover refraction.