The place where most laboratory ultra-high pressure work is done. Two diamond faces separated by a thin gasket in the shape of an annulus.
The item to be pressurized is in fluid in the cell. When the diamond faces are pressed together, the gasket is deformed outward somewhat. The radial force on the gasket is only the cell pressure times the area of its vertical inner surface, whereas the normal force is the same pressure exerted by a diamond face times its surface area.
In other words, the gasket holds so long as the diamond-metal coefficient of friction is about greater than the ratio of the gasket's thickness to its width difference of inner and outer radii -- easily done. DAC's are used mostly in spectroscopic studies: Electronic transport studies, on the other hand, are rare or unknown, because of the difficulty in putting leads through the gasket.
Network switching equipment for T1 lines and their subchannels. Dachshund A badger hound. Here's what I thought was a nonstandard mnemonic: Still, it's probably not the best way to learn.
Here's an attractive one-webpage introduction to dactylic hexameter. I've seen this used apparently unselfconsciously. Dad Informal or familiar expression for father. Craning my neck constantly was too tiring, so mainly I watched what passed my father at knee level. One time I noticed that he was not wearing his usual shoes with laces, but something entirely different, smooth shoes with no laces. His spats, which he always wore, were gone, too.
My father was walking a dozen steps behind. This must have been an unusually unpleasant experience, for me to remember it so well. I imagine this sort of thing must happen a lot, particularly to men. Men's clothing doesn't exhibit much variation at knee level. Many times, standing in a store aisle, I've felt the hand of a small stranger grab a piece of my pants leg.
Off Grape Road there's a guitar store called Hoosierdad's. But puns don't really age so well. I haven't used it, but it's evidently a spreadsheet program with Matlab functionality.
This might be attractive even, or perhaps especially, if you despise Matlab. A tree-structured machine intended for rule-based intelligent programs written in Parallel Lisp, say. Much-faster-than-real-time speech recognition a target application. Seems like a half-hearted XARA.
A former policy of the US military. The military's policy on homosexuality used to be that homosexual activity was forbidden. Daedalus The first artificer or inventor, a sculptor of Greek mythology. Imprisoned on the island of King Minos, he made wings so he and his son Icarus could escape. Icky didn't make it: But you knew that. D also killed a nephew who was apprenticed to him tricked him into diving off a cliff out of jealousy of the boy's inventiveness.
The boy invented the comb, or saw, or the compass [the drafting tool] or whatever. There are multiple versions of all the stories -- like Hollywood remakes. But I can't recall anyone ever getting credit for inventing the bag. If I were a young male relative of Daedalus, I think I would have a very rational fear of heights.
Maybe they should have called him Deadalus. The title of a journal published by the AAAS , but you knew that too. The family name of the hero of A Portrait of the Artist as a Young Man, a Bildungsroman that James Joyce published when he was a little past Stephen Dedalus oh yeah, it's a different spelling is the artist, Simon is his dad. On June 16, , Stephen finds a surrogate father figure in Leopold Bloom, but that's another story Ulysses, published in Of course, you knew all that as well.
Let's face it, you're an irritating know-it-all and nobody likes you. But since this glossary is one-way, meaning I don't have to read your definitions, I have the patience of a saint, so I'm going to go on and tie all these loose threads together. A young man wants to escape Consider Rasselas, a novel by Samuel Johnson and name of the novel's principal character. The Prince of Abissinia. The novel is a Bildungsroman after the fashion of Voltaire's Candide. Rasselas is the fourth son of the king of what we now spell Abyssinia and call Ethiopia.
He's twenty-six years old and dissatisfied with life in Happy Valley, where he and the other royal children are imprisoned but live in material luxury. When this glossary has a Pleasant Valley entry, you'll be the first to know, I promise. Rasselas escapes and seeks the secret of happiness.
Where Candide eventually concludes that one must become a gardener, Rasselas eventually realizes that one Look, this is rough, okay?
I'm just putting this stuff in as context for a little excerpt. Quotation style, spelling, etc. Paragraph breaks are also as in the original, with the following exception: This has been done to confuse and irritate you personally.
Also, I've reduced the font size of one slower-moving bit, so it'll be harder to read and you'll have to spend extra time reading it. Chapter VI A dissertation on the art of flying.
Among the artists that had been allured into the happy valley, to labour for the accommodation and pleasure of its inhabitants, was a man eminent for his knowledge of the mechanick powers, who had contrived many engines both of use and recreation. By a wheel, which the stream turned, he [ Yadda, yadda, yadda.
He invented indoor plumbing, evaporative cooling, and a sound system powered by renewable energy. He erected a pavillion in the garden, around which he kept the air always cool by artificial showers. One of the groves, appropriated to the ladies, was ventilated by fans, to which the rivulet that run through it gave a constant motion; and instruments of soft musick were placed at proper distances, of which some played by the impulse of the wind, and some by the power of the stream.
This artist was sometimes visited by Rasselas, who was pleased with every kind of knowledge, imagining that the time would come when all his acquisitions should be of use to him in the open world. He came one day to amuse himself in his usual manner, and found the master busy in building a sailing chariot: The workman was pleased to find himself so much regarded by the prince, and resolved to gain yet higher honours.
I have been long of opinion, that, instead of the tardy conveyance of ships and chariots, man might use the swifter migration of wings; that the fields of air are open to knowledge, and that only ignorance and idleness need crawl upon the ground. Every animal has his element assigned him; the birds have the air, and man and beasts the earth.
He that can swim needs not despair to fly: We are only to proportion our power of resistance to the different density of the matter through which we are to pass. You will be necessarily upborn by the air, if you can renew any impulse upon it, faster than the air can recede from the pressure. Very yrast , no doubt.
How must it amuse the pendent spectator to see the moving scene of land and ocean, cities and desarts! Can you believe that this same Samuel Johnson was the author of a famous dictionary? How easily shall we then trace the Nile through all his passage; pass over to distant regions, and examine the face of nature from one extremity of the earth to the other! I have been told, that respiration is difficult upon lofty mountains, yet from these precipices, though so high as to produce great tenuity of the air, it is very easy to fall: I have considered the structure of all volant animals, and find the folding continuity of the bat's wings most easily accommodated to the human form.
Upon this model I shall begin my task to morrow, and in a year expect to tower into the air beyond the malice or pursuit of man. But I will work only on this condition, that the art shall not be divulged , and that you shall not require me to make wings for any but ourselves. All skill ought to be exerted for universal good; every man has owed much to others, and ought to repay the kindness that he has received.
But what would be the security of the good, if the bad could at pleasure invade them from the sky? Against an army sailing through the clouds neither walls, nor mountains, nor seas, could afford any security. A flight of northern savages might hover in the wind, and light at once with irresistible violence upon the capital of a fruitful region that was rolling under them.
Even this valley, the retreat of princes, the abode of happiness, might be violated by the sudden descent of some of the naked nations that swarm on the coast of the southern sea. He visited the work from time to time, observed its progress, and remarked the ingenious contrivances to facilitate motion, and unite levity with strength. The artist was every day more certain that he should leave vultures and eagles behind him, and the contagion of his confidence seized upon the prince.
In a year the wings were finished, and, on a morning appointed, the maker appeared furnished for flight on a little promontory: His wings, which were of no use in the air, sustained him in the water, and the prince drew him to land, half dead with terrour and vexation.
Rasselas doesn't get out until chapter His favorite sister, Princess Nekayah, comes along. They spend 33 chapters searching for the secret of happiness. The princess thought, that of all sublunary things, knowledge was the best: