The polarity observation could be consistent with the relative difficulty of producing -ve streamers compared to +ve streamers. +ve streamers are generally produced at a lower E-field than -ve. It is possible you are seeing this preferential breakdown behaviour in your current results.
I'm a senior scientist in the lightning testing facility of Cobham Plc (which use to be known as Culham Lightning). We predominantly perform aerospace testing for the major european aircraft manufacturers. The aerospace lightning standards, such as ED-84, could not be practically achieved using a tesla coil arrangement. The current/voltage levels and waveforms shapes are very specific to simulate the effects of a one in a thousand (typically positive) natural lightning strike. These waveforms are easiest to achieve using large LCR circuits turned to provide the correct waveform shape from the load (e.g ED-84 Waveform A 200kA double exponential 6.4us rise/69us fall to half height). As they are inherently AC devices, Tesla coils devices can not provide the correct waveform shapes to simulate a natural lightning discharge. They are also unsuitable for attachment testing or dielectric breakdown tests are they do not maintain a continuous E-field as seen in nature and simulated in the test standards.
It also makes it do bugger all (I suspect that is what you were suggesting re "heat problem"). The whole point of running it resonant is to build up the voltage in multiple "stages". What you are suggesting would be like kicking once on a swing and leaving it at that. That'll be a boring swing!
They have patents in the core communications protocols and core hardware that is necessary to make any modern mobile phone. Apple really have picked the wrong company to annoy.
Wonderful until someone accidentally nicks one of the cables, I've seen it happen more than once. Velcro is the way to go.
Also cable ties are not recommended for Fibre optic cabling as they can, particularly if applied too tight, result in damage to the bundle. Velcro ties do not have this problem as they are more pliable and it is difficult to exert excessive force.
It has already been pointed out in numerous articles that the Samsung Galaxy and the iPad are not even the same shape. Apple doctored the images in their filing to make them look the same. How could you miss this? Practically every major newspaper has had an article on it!
Read up about Laser Plasma Wakefield Acceleration if you want to understand the principle behind generating the huge E-field with a high powered laser.
Yes, amazingly it is true, there is not enough geothermal power in accessible locations to power our civilization (assuming it was used alone). The earth outputs 44 TW over the whole planet (http://www.agu.org/pubs/crossref/1993/93RG01249.shtml). We currently use ~15TW on average as a civilization.
The plasma facing first wall and structural materials of fusion plants are being designed to minimise the generation of long lived radiative elements (search for IFMIF for info on the planned materials test facility). Over the lifetime of a fusion plant you'd end up with barely enough high level waste to put into a small oil drum - this can then be destroyed. People seem to forget that you can use the huge neutron flux of a fusion reactor to transmute materials, ie you can convert dangerous radioactive waste into much more benign waste. It would require a dedicated plant, but this would be no problem in a fusion economy.
I suspect it is more likely a leak or partial leak. These plants have been through hell, a serious earthquake, multiple smaller aftershocks, a tsunami, 2 huge hydrogen explosions, 2 smaller hydrogen explosions and fires. It is possible that some of the water circulation pipes or the pool structure was damaged.
Sorry to dampen you optimism, but these reactors are going to be totally useless after this. The reactor vessel will almost certainly be beyond repair and it is central to the entire plant. Economically it would be easier to just build a newer design of plant.
Modern reactor designs include outer concrete structures which are capable of surviving a direct impact by a 747 aircraft. It'd take access to heavy military weapons (artillery/missile systems) to practically penetrate the reactor shields.
...a meltdown that did nothing to the outside world, the containment vessel did its job. I suggest you actually read about the events of TMI before declaring people as idiots.
Slashdot Mirror
The polarity observation could be consistent with the relative difficulty of producing -ve streamers compared to +ve streamers. +ve streamers are generally produced at a lower E-field than -ve. It is possible you are seeing this preferential breakdown behaviour in your current results.
*turned = tuned
I'm a senior scientist in the lightning testing facility of Cobham Plc (which use to be known as Culham Lightning). We predominantly perform aerospace testing for the major european aircraft manufacturers. The aerospace lightning standards, such as ED-84, could not be practically achieved using a tesla coil arrangement. The current/voltage levels and waveforms shapes are very specific to simulate the effects of a one in a thousand (typically positive) natural lightning strike. These waveforms are easiest to achieve using large LCR circuits turned to provide the correct waveform shape from the load (e.g ED-84 Waveform A 200kA double exponential 6.4us rise/69us fall to half height). As they are inherently AC devices, Tesla coils devices can not provide the correct waveform shapes to simulate a natural lightning discharge. They are also unsuitable for attachment testing or dielectric breakdown tests are they do not maintain a continuous E-field as seen in nature and simulated in the test standards.
It also makes it do bugger all (I suspect that is what you were suggesting re "heat problem"). The whole point of running it resonant is to build up the voltage in multiple "stages". What you are suggesting would be like kicking once on a swing and leaving it at that. That'll be a boring swing!
They have patents in the core communications protocols and core hardware that is necessary to make any modern mobile phone. Apple really have picked the wrong company to annoy.
Wonderful until someone accidentally nicks one of the cables, I've seen it happen more than once. Velcro is the way to go.
Also cable ties are not recommended for Fibre optic cabling as they can, particularly if applied too tight, result in damage to the bundle. Velcro ties do not have this problem as they are more pliable and it is difficult to exert excessive force.
It has already been pointed out in numerous articles that the Samsung Galaxy and the iPad are not even the same shape. Apple doctored the images in their filing to make them look the same. How could you miss this? Practically every major newspaper has had an article on it!
A bloody picture frame looks like a iPad ffs. Its an old concept and an old design.
I'm really hoping that was a poor joke.
Wow, you learnt to use the right tool for the right job... and your point is?
Norway...
Read up about Laser Plasma Wakefield Acceleration if you want to understand the principle behind generating the huge E-field with a high powered laser.
Radiation badges are for exposure tracking, not preemptive exposure control.
What a waste of money.
Yes, amazingly it is true, there is not enough geothermal power in accessible locations to power our civilization (assuming it was used alone). The earth outputs 44 TW over the whole planet (http://www.agu.org/pubs/crossref/1993/93RG01249.shtml). We currently use ~15TW on average as a civilization.
The plasma facing first wall and structural materials of fusion plants are being designed to minimise the generation of long lived radiative elements (search for IFMIF for info on the planned materials test facility). Over the lifetime of a fusion plant you'd end up with barely enough high level waste to put into a small oil drum - this can then be destroyed. People seem to forget that you can use the huge neutron flux of a fusion reactor to transmute materials, ie you can convert dangerous radioactive waste into much more benign waste. It would require a dedicated plant, but this would be no problem in a fusion economy.
If it is perfectly diffuse you don't need the Phong model, it'd be Lambertian. :)
We don't appreciate it because it was lame.
I suspect it is more likely a leak or partial leak. These plants have been through hell, a serious earthquake, multiple smaller aftershocks, a tsunami, 2 huge hydrogen explosions, 2 smaller hydrogen explosions and fires. It is possible that some of the water circulation pipes or the pool structure was damaged.
Sorry to dampen you optimism, but these reactors are going to be totally useless after this. The reactor vessel will almost certainly be beyond repair and it is central to the entire plant. Economically it would be easier to just build a newer design of plant.
No containment stuctures? What other than the ~decimeter thick steel containment vessel surrounding the fuel and critical systems?
Modern reactor designs include outer concrete structures which are capable of surviving a direct impact by a 747 aircraft. It'd take access to heavy military weapons (artillery/missile systems) to practically penetrate the reactor shields.
Generation 3.5 reactors include entirely passive cooling systems. You could literally walk away from them.
...a meltdown that did nothing to the outside world, the containment vessel did its job. I suggest you actually read about the events of TMI before declaring people as idiots.
Yes, let's ignore the fact that Canonical's distribution has brought us millions of new desktop users.