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A Changing Landscape
Back home from my too rare rides through the north-German country side. Indeed, the landscape is changing.
Folks there build windmills to repel elephants – thousands of huge windmills. The newest rage is to tear down the smaller ones even when they are only ten years old. They get replaced with bigger windmills – "repower" is the word. Aside from being better in holding off pachyderms, the new types generate about ten times more windy energy than the older ones.
Additionally every farmstable which has a roof somewhat towards south is now packed with sun collectors. Farmers literary rent their roofs away. My brother plastered our parents old house, a bigger business building, with 2,000 square feet of collectors and the electricity he sells will recoup the investment within 8 years. After those the panels will generate safe net income of several thousand Euros per year.
Lacking big powerstations, the area I visited has always been an electricity importer. Now the regional electricity utility is exporting lots of megawatts to other parts of the country.
On the way home I listened to a radio interview with the chief economist of Deutsche Bank. He expects the German export boom to continue despite a looming recession and pointed to the global run for alternative energies. Asked if a higher Euro would be drag on German exports of windmills and the like to the U.S. and elsewhere he said flat out: "No. They can’t buy this stuff anywhere else. We are two generations ahead of everyone else on this."
Fine with me – now can we please stop exporting arms?
There are some interesting aspects in how decentralized electricity generation effects energy transportation and the general architecture of grids. ‘Balancing the grid’, i.e. the just-in-time on-demand control of electricity generation, needs to be more localized and must involve many more generating sources than before.
While these changes are very desireable, energy monopols that own big powerstations plus major parts of the grid are holding things back. There is a case to be made that electricity grids should be state owned monopols and their architecture determined by energy security in the widest sense (i.e. no wars for oil), not by profane profitability.
But now, after two long nights, I need some rest and I may pick on that issue in a later post.
Great thread.
This is something that should be everyone’s concern, but obviously isn’t – hence the thread
I have heard from otherwise very intelligent people, a mantra of two variations on a theme:
God will provide
Science will provide
The problem is, only we can provide or we will disappear, as our ultimate survival depends on our getting off this little rock. That’s why we’re here, to go out and explore our neighbourhood, because no home lasts forever and neither does the ‘hood apparently.
Far into the future, if the stupid monkey still exists, it will be huddled around black holes, mining the energy to power our genetically modified lives (might have to do that to withstand the radiation that permeates space – how does a little cockroach DNA sound?) and the sky will be dark save for the hole(s).
Mass of the Earth:
The mass of the Earth may be determined using Newton’s law of gravitation. It is given as the force (F), which is equal to the Gravitational constant multiplied by the mass of the planet and the mass of the object, divided by the square of the radius of the planet. We set this equal to the fundamental equation, force (F) equals mass (m) multiplied by acceleration (a). We know that the acceleration due to gravity is equal to 9.8 m/s**2, the Gravitational constant (G) is 6.673 × 10-11 Nm**2/kg**2, the radius of the Earth is 6.37 × 106 m, and mass cancels out. When we rearrange the equation and plug all the numbers in, we find that the mass of the Earth is 5.96 × 10**24 kg.
F = Gm(sub1)m(sub2)/r**2 = ma
Gm/r**2 = g
m = gr**2/G
m = (9.8 m/s**2)(6.37 × 106 m)**2/(6.673 × 10**-11 Nm**2/kg**2)
m = 5.96 × 10**24 kg
(** = exponent)
For comparison: atmosphere = 5 × 10**18 kg; the sun = 2 x 10**30 (This is about 343,000 times the mass of the Earth). The beauty of math.
The Earth gains mass each day, as a result of incoming debris from space. This occurs in the forms of “falling stars”, or meteors, on a dark night. The actual amount of added material depends on each study, though it is estimated that 10 to the 8th power kilograms of in-falling matter accumulates every day. The seemingly large amount, however, is insignificant to the Earth’s total mass. The Earth adds an estimated one quadrillionth of one percent to its weight each day.
Notice the use of Newton’s Law of Gravitation. One of the irksome qualities of articles like that one recently referenced from LRB regarding Darwin, is they imply theories change faster than most people change their ginch. Well they don’t – largely due to healthy skepticism (and of course, human frailties).
(the fact that we don’t have a particle that “carries” gravity like a photon does light, in no way validates things like horoscopes. A newspaper (that felt slimy typing that) recently apologized for one day running the incorrect ‘scopes. How would have anyone noticed? Sadly someone once told me that astrology = astronomy)
Another quality of these articles is to treat science like a series of isolated incidents (true for history I find, as well – a certain marxist had a habit of this) in which new discoveries always supplant older ones. True in many cases such as Lamarckism and homeopathy but, not so with einstein or quantum things – these have enhanced existing ideas and our understanding. (but not our wisdom to wield that knowledge – if religion is to provide that, it ain’t doin a very good job)
Nothing will change the fact of the periodic table or that those elements are created during the life cycle of suns. H-O-H is and always be, comprised of one O and two H’s – it was made of these atoms well before the stupid monkey came along to name them. It has a crystalline structure when frozen and is a dynamic fluid in it’s normal phase. Fluid dynamics describe the antics of liquid water and it has no permanent structure (any is fleeting, as in nanoseconds).
New, future quantum discoveries will not change that and do not account for things like homeopathy – an industry that uses a lot of precious water to make pills with a lot of nothing in them and a lot of precious fuels to put them in a lot of pharmacies all over the place.
As stated by Debs is dead, no free lunch. No panacea. No Free energy. Sets and subsets. It’s all cause and effect. It all adds up (if you knew the weight of Nagasaki and were able to place a dome over the cataclysm – you could weight the ashes of all the homes and the cracked eggs and very, very nearly get the original number)
What has really been discussed is the universe, but just our little corner of it.
Let’s say for the sake of argument, that the stupid monkey can learn to love itself and stop wasting all that supposed brain power on weapons. Instead it figures out how to reasonably use what little Gaia provides. Are we safe? Not by a longshot.
The resources will still run out.
The universe is a very dangerous place without the stupid monkey. 5 mass extinctions so far and more to come guaranteed. Whether it is down to the stupid monkey or not. It will happen. Whether a big chocolate sundae from space or the iron core of the beautiful blue marble cools and slows the 1000mph spin (think Mars) down to naught, it will happen.
But we’re here now and we’re going to have to go out there (which means resolving b’s conundrum) or we will end here.
But we’d rather make weapons.
The nasty winds in Calif are caused by the mountains cooling and compressing the air moving off the deserts (after being heated by the sun). This heavy air picks up speed as it falls and is dried and heated again. The dry air masses are funneled through the canyons and valleys as through fuel injectors, sucking the moisture from the vegetation and spreading any embers for miles. And once the fires start, they add to the devastating power and chaos of the winds and…
Posted by: jcairo | Oct 24 2007 15:08 utc | 20
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