As the hydra in Greek mythology, love can take many forms – surely many more forms than the nine heads of most versions of the hydra of Lake Lerna…
Filial and paternal love, as found in Corinthians («Love is patient, love is kind…»), is just one form of love. As it is passionate love, the love involving a man and a woman, the most eulogised form of love, described by Shakespeare in Romeo and Juliet as a «smoke made with the fume of sighs», and as a «fire sparkling in lovers' eyes», and a «sea nourished with lovers' tears», when vexed.
There are indeed many other forms of love, besides these: the love of friends, of life, of ideas, of animals, of music and other forms of art. Or the love of God, of power, of money, of cruelty…
Yes. Love may involve the bad side of the hydra myth. Some of the forms of love are clearly perversions (to love money, for instance), or monstrosities (the sadistic love, of some executioners and psychopaths...)
And unfortunately there isn’t any radical way of suppressing the monster. We can’t kill it, as Heracles killed the bad hydra. The source from where perverted love sprouts is the same one that feeds the magnificent unperverted ones. The monster side of love is associated with Beauty (as in the Beauty and the Beast story), and we simply can’t destroy it. We need it. It gives meaning to our lives (including the lives of those who cultivate the love of money, or to hate). The only thing we can do is to fight the bad heads of the hydra, denouncing them.
Saturday, October 25, 2008
Nano technology
Manufactured products are made from atoms. The properties of those products depend on how those atoms are arranged. If we rearrange the atoms in coal we can make diamond. If we rearrange the atoms in sand (and add a few other trace elements) we can make computer chips. If we rearrange the atoms in dirt, water and air we can make potatoes.
Todays manufacturing methods are very crude at the molecular level. Casting, grinding, milling and even lithography move atoms in great thundering statistical herds. It's like trying to make things out of LEGO blocks with boxing gloves on your hands. Yes, you can push the LEGO blocks into great heaps and pile them up, but you can't really snap them together the way you'd like.
In the future, nanotechnology will let us take off the boxing gloves. We'll be able to snap together the fundamental building blocks of nature easily, inexpensively and in most of the ways permitted by the laws of physics. This will be essential if we are to continue the revolution in computer hardware beyond about the next decade, and will also let us fabricate an entire new generation of products that are cleaner, stronger, lighter, and more precise.
It's worth pointing out that the word "nanotechnology" has become very popular and is used to describe many types of research where the characteristic dimensions are less than about 1,000 nanometers. For example, continued improvements in lithography have resulted in line widths that are less than one micron: this work is often called "nanotechnology." Sub-micron lithography is clearly very valuable (ask anyone who uses a computer!) but it is equally clear that conventional lithography will not let us build semiconductor devices in which individual dopant atoms are located at specific lattice sites. Many of the exponentially improving trends in computer hardware capability have remained steady for the last 50 years. There is fairly widespread belief that these trends are likely to continue for at least another several years, but then conventional lithography starts to reach its limits.
If we are to continue these trends we will have to develop a new manufacturing technology which will let us inexpensively build computer systems with mole quantities of logic elements that are molecular in both size and precision and are interconnected in complex and highly idiosyncratic patterns. Nanotechnology will let us do this.
When it's unclear from the context whether we're using the specific definition of "nanotechnology" (given here) or the broader and more inclusive definition (often used in the literature), we'll use the terms "molecular nanotechnology" or "molecular manufacturing."
Whatever we call it, it should let us
* Get essentially every atom in the right place.
* Make almost any structure consistent with the laws of physics that we can specify in molecular detail.
* Have manufacturing costs not greatly exceeding the cost of the required raw materials and energy.
There are two more concepts commonly associated with nanotechnology:
* Positional assembly.
* Massive parallelism.
Clearly, we would be happy with any method that simultaneously achieved the first three objectives. However, this seems difficult without using some form of positional assembly (to get the right molecular parts in the right places) and some form of massive parallelism (to keep the costs down).
The need for positional assembly implies an interest in molecular robotics, e.g., robotic devices that are molecular both in their size and precision. These molecular scale positional devices are likely to resemble very small versions of their everyday macroscopic counterparts. Positional assembly is frequently used in normal macroscopic manufacturing today, and provides tremendous advantages. Imagine trying to build a bicycle with both hands tied behind your back! The idea of manipulating and positioning individual atoms and molecules is still new and takes some getting used to. However, as Feynman said in a classic talk in 1959: "The principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom." We need to apply at the molecular scale the concept that has demonstrated its effectiveness at the macroscopic scale: making parts go where we want by putting them where we want!
One robotic arm assembling molecular parts is going to take a long time to assemble anything large — so we need lots of robotic arms: this is what we mean by massive parallelism. While earlier proposals achieved massive parallelism through self replication, today's "best guess" is that future molecular manufacturing systems will use some form of convergent assembly. In this process vast numbers of small parts are assembled by vast numbers of small robotic arms into larger parts, those larger parts are assembled by larger robotic arms into still larger parts, and so forth. If the size of the parts doubles at each iteration, we can go from one nanometer parts (a few atoms in size) to one meter parts (almost as big as a person) in only 30 steps.
Todays manufacturing methods are very crude at the molecular level. Casting, grinding, milling and even lithography move atoms in great thundering statistical herds. It's like trying to make things out of LEGO blocks with boxing gloves on your hands. Yes, you can push the LEGO blocks into great heaps and pile them up, but you can't really snap them together the way you'd like.
In the future, nanotechnology will let us take off the boxing gloves. We'll be able to snap together the fundamental building blocks of nature easily, inexpensively and in most of the ways permitted by the laws of physics. This will be essential if we are to continue the revolution in computer hardware beyond about the next decade, and will also let us fabricate an entire new generation of products that are cleaner, stronger, lighter, and more precise.
It's worth pointing out that the word "nanotechnology" has become very popular and is used to describe many types of research where the characteristic dimensions are less than about 1,000 nanometers. For example, continued improvements in lithography have resulted in line widths that are less than one micron: this work is often called "nanotechnology." Sub-micron lithography is clearly very valuable (ask anyone who uses a computer!) but it is equally clear that conventional lithography will not let us build semiconductor devices in which individual dopant atoms are located at specific lattice sites. Many of the exponentially improving trends in computer hardware capability have remained steady for the last 50 years. There is fairly widespread belief that these trends are likely to continue for at least another several years, but then conventional lithography starts to reach its limits.
If we are to continue these trends we will have to develop a new manufacturing technology which will let us inexpensively build computer systems with mole quantities of logic elements that are molecular in both size and precision and are interconnected in complex and highly idiosyncratic patterns. Nanotechnology will let us do this.
When it's unclear from the context whether we're using the specific definition of "nanotechnology" (given here) or the broader and more inclusive definition (often used in the literature), we'll use the terms "molecular nanotechnology" or "molecular manufacturing."
Whatever we call it, it should let us
* Get essentially every atom in the right place.
* Make almost any structure consistent with the laws of physics that we can specify in molecular detail.
* Have manufacturing costs not greatly exceeding the cost of the required raw materials and energy.
There are two more concepts commonly associated with nanotechnology:
* Positional assembly.
* Massive parallelism.
Clearly, we would be happy with any method that simultaneously achieved the first three objectives. However, this seems difficult without using some form of positional assembly (to get the right molecular parts in the right places) and some form of massive parallelism (to keep the costs down).
The need for positional assembly implies an interest in molecular robotics, e.g., robotic devices that are molecular both in their size and precision. These molecular scale positional devices are likely to resemble very small versions of their everyday macroscopic counterparts. Positional assembly is frequently used in normal macroscopic manufacturing today, and provides tremendous advantages. Imagine trying to build a bicycle with both hands tied behind your back! The idea of manipulating and positioning individual atoms and molecules is still new and takes some getting used to. However, as Feynman said in a classic talk in 1959: "The principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom." We need to apply at the molecular scale the concept that has demonstrated its effectiveness at the macroscopic scale: making parts go where we want by putting them where we want!
One robotic arm assembling molecular parts is going to take a long time to assemble anything large — so we need lots of robotic arms: this is what we mean by massive parallelism. While earlier proposals achieved massive parallelism through self replication, today's "best guess" is that future molecular manufacturing systems will use some form of convergent assembly. In this process vast numbers of small parts are assembled by vast numbers of small robotic arms into larger parts, those larger parts are assembled by larger robotic arms into still larger parts, and so forth. If the size of the parts doubles at each iteration, we can go from one nanometer parts (a few atoms in size) to one meter parts (almost as big as a person) in only 30 steps.
Thursday, October 9, 2008
Srilanka Online Music Community
The present times srilankan web community has lot of music web sites. Some are Special one for artists. They are launch from artists. These web sites bring lot of information about those artists. These web sites belong to artists like “iraj online.com”,”BNSmusic.com”,”Dushayanth.com”. But some web site gives facilities for music video and audio downloading in Srilanka. From that web sites Elakiri.com and Musiclk (gallezone.com) give lot of facilities to Viewers of these websites. Some Maintain the Forum inside that website. These web sites only give downloading facility to members. Some websites like gallezone.com maintain the website network with that site. According to my idea now a day’s artists must to be keep in touch with these web sites because these web sites is the most popular websites of the srilankan web community .
Elakiri.com gives latest music videos and audios from the most popular characters like Iraj, BNS, Romesh and Lakshan, Daddy. But other leading website for downloading music videos and audios as known as gallzone.com has little late for presenting these music videos to web community. But they bring other artists music videos and audios so quickly. Also they give the 3GP format Videos.
But we must develop these web sites as the leading music community web site in the world.
Friday, September 19, 2008
Advantages of open source
In present times open source programmers came towards very quickly but some countries and some people didn’t interested about this open source software because they didn’t want to free from their conservative but now is the time for the open source software’s world. Because of this company based software development is creating major problems to software users. Because of this software prices normal people can’t stay with the new versions of this high price software .like windows operating systems. Also other software developers cannot develop these softwares. Became a open source software user we can get latest updates for this software any time. Now a day’s office packages and antivirus packages publishing with new cover that for one year but there was not a new version. They didn’t add new features to their products but they put their product in to new cover bring that thing to market as new version. But open source software developers didn’t do that marketing tricks.
That’s why open source became the best way to bring our software developing industry to future...
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