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Author Topic: A-Z of AVIONICS  (Read 448348 times)

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #750 on: 25/06/2007 10:13:26 »
SPREADING CENTER =
A SITE WHERE OCEANIC CRUST IS BEING FORMED!
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #751 on: 28/06/2007 23:19:20 »
TOPOLOGY = Branch of mathematics that is concerned with surface properties that do not change under distortion.
 

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Re: A-Z of AVIONICS
« Reply #752 on: 12/07/2007 22:45:07 »
Uncostate = having only one main rib: said of a leaf.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #753 on: 18/07/2007 22:01:27 »
Vein



Cross section of a vein showing a valve which prevents backflow

In the circulatory system, a vein is a blood vessel that carries blood toward the heart. The majority of veins in the body carry low-oxygen blood from the tissues back to the heart; the exceptions being the pulmonary and umbilical veins which both carry oxygenated blood.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #754 on: 18/07/2007 22:13:09 »
White dwarf = any of a class of small, extremely dense stars of low luminosity, often no larger then the earth but weighing as much as the sun.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #755 on: 18/07/2007 22:32:09 »
Zebu, common name for several breeds of domesticated humped cattle native to southern Asia. A large, muscular hump on the back above the shoulders is its most conspicuous characteristic. Most zebus have short horns, pendulous ears, and huge dewlaps. The animals are used extensively in Africa and Asia as beasts of burden, and for their milk and flesh. White bulls are regarded as sacred by certain sects of Hindus; hence the entire species is known in some parts of the world as Brahman cattle.

Because the zebu is highly resistant to heat and tropical diseases, it has been introduced into the United States and South America for cross-breeding with native cattle to develop strains with similar qualities.



A Zebu doing what Zebus do best..............being a Zebu !!
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #756 on: 18/07/2007 22:33:39 »
ooops...i missed out 'X' and ' Y '............oh well..I'm forgiven..I'm out of practice !!  ;D
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #757 on: 18/07/2007 22:43:19 »
Yes you Are Forgiven.. Definitely out of Practice! LOL

Lets start over!

ARTERIAL SCLEROSIS:

arteriosclerosis, arterial sclerosis, hardening of the arteries, induration of the arteries, coronary-artery disease

sclerosis of the arterial walls






« Last Edit: 18/07/2007 22:55:01 by Karen W. »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #758 on: 18/07/2007 23:31:24 »
Brain


In animals, the brain or encephalon (Greek for "in the head"), is the control center of the central nervous system, responsible for behaviour. In most animals, the brain is located in the head, protected by the skull and close to the primary sensory apparatus of vision, hearing, equilibrioception (balance), sense of acceleration, taste, and olfaction. While all vertebrates have a brain, most invertebrates have either a centralized brain or collections of individual ganglia. Primitive animals such as sponges do not have a brain at all. Brains can be extremely complex. For example, the human brain contains more than 100 billion neurons, each linked to as many as 10,000 other neurons.


Animation showing the human brain with the lobes highlighte
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #759 on: 19/07/2007 02:29:52 »
Cerebral Cortex

From Wikipedia, the free encyclopedia


The cerebral cortex is a structure within the vertebrate brain with distinct structural and functional properties. In non-living, preserved brains, the outermost layers of the cerebrum has a grey color, hence the name "grey matter". Grey matter is formed by neurons and their unmyelinated fibers while the white matter below the grey matter of the cortex is formed predominantly by myelinated axons interconnecting different regions of the central nervous system. The human cerebral cortex is 2-4 mm (0.08-0.16 inches) thick and plays a central role in many complex brain functions including memory, attention, perceptual awareness, "thinking", language and consciousness.

The surface of the cerebral cortex is folded in large mammals where more than two thirds of the cortical surface is buried in the grooves, called "sulci". The phylogenetically more ancient part of the cerebral cortex, the hippocampus, is differentiated in five layers of neurons, while the more recent neo-cortex is differentiated in six basic layers. Relative variations in thickness or cell type (among other parameters) allows us to distinguish among different neocortical architectonic fields. The geometry of these fields seems to be related to the anatomy of the cortical folds and, for example, layers in the upper part of the cortical grooves (called gyri) are more clearly differentiated than in its deeper parts (called sulcal "fundi").



      Location of the cerebral cortex




        Slice of the cerebral cortex, ca. 10.5mm wide




    Golgi-stained neurons in the somatosensory cortex of the macaque monkey.
« Last Edit: 19/07/2007 02:33:21 by Karen W. »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #760 on: 19/07/2007 03:36:26 »
Da Vinci (T-Shirt)

As I have never enjoyed the luxury of a naked Scientist T Shirt I managed to procure this Da Vinci T Shirt (as worn by yours truly) in Florence !

I have been there recently...did I mention it ?

Notice how Da Vinci copied the TNS Logo !!


 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #761 on: 19/07/2007 03:52:48 »


Yes That is a very cool Shirt! I hope you had loads of fun!
HEY WE POSTED AT THE SAME TIME WHEN YOU CHANGED YOUR PICTURE AND THE SITE SUCKED MY POST AWAY!!! NO FAIR!! CRIMANY!! IT WAS DONE AND BOOM!  LOL ARRRRRG!

Evolution..



concept that embodies the belief that existing animals and plants developed by a process of gradual, continuous change from previously existing forms. This theory, also known as descent with modification, constitutes organic evolution. Inorganic evolution, on the other hand, is concerned with the development of the physical universe from unorganized matter. Organic evolution, as opposed to belief in the special creation of each individual species as an immutable form, conceives of life as having had its beginnings in a simple primordial protoplasmic mass (probably originating in the sea) from which, through the long eras of time, arose all subsequent living forms.




« Last Edit: 19/07/2007 03:56:16 by Karen W. »
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #762 on: 19/07/2007 04:18:42 »
Faraday, Michael
Feinberg, Gerald
Fermi, Enrico
Feynman digrams
Field Theory
Freund, Peter
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #763 on: 19/07/2007 08:05:56 »
Galvanism = Electricity produced by a chemical action. 2. A direct electrical current used to stimulate nerves and muscles.

You will find more through wiki
http://en.wikipedia.org/wiki/Galvanism
« Last Edit: 19/07/2007 08:20:12 by Karen W. »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #764 on: 19/07/2007 10:51:48 »
Habit, an act acquired by experience and performed regularly and automatically. Habits include mannerisms, such as moving the hands when talking; satisfying psychological cravings such as smoking or overeating; and even characteristic reading preferences, such as a regular diet of horror novels or Shakespearean tragedies. Psychologists are interested in habits because of their function as a basic element of learning and as problems to be treated when they prove disruptive to a person's well-being.

Psychoanalysts consider habits as expressions of erotic and aggressive impulses. Repressed, these impulses find an outlet through the counter-productive, repetitive behaviour that comprises habits. In contrast, American psychologist and learning theorist Clark Hull defined habit with great precision in terms of the laws of conditioning and reinforcement. A majority of contemporary psychologists view habits as learned or conditioned behaviour over which one has little voluntary control. Some theorists even consider more complex but commonly practised human activities, such as playing football or speaking French, as composed of “habit hierarchies”.

Habits may begin as reactions to a major event, such as a bodily injury, and then continue on other occasions that reproduce certain cues or stimuli from the original event. A habit is influenced not only by elements that produce the behaviour but also by rewards or punishments that follow it. An action that is lavishly rewarded as soon as it is performed is well on its way to becoming a habit. Once a habit is firmly entrenched, it can be sustained by cues different from those that originally created it, and it need not be rewarded so regularly or well. Indeed, the habit may become its own reward.

Psychologists can effectively assist people in breaking such habits as hair and eyebrow pulling, fingernail biting, shoulder jerking, scratching, overeating, smoking, drinking, and exhibitionism. With children, self-destructive habits such as head banging can be eliminated by behaviour modification or counterconditioning techniques. These involve increasing one's awareness of the act, interrupting its performance so that it no longer seems such a natural thing to do, and reinforcing another act as a competitor. Recognizing the social benefits of breaking an undesirable habit makes doing so easier. In the serious mental defect known as obsessive-compulsive disorder, people feel compelled to repeat actions such as washing hands or switching off lights and appliances.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #765 on: 19/07/2007 11:53:31 »


Invar

From Wikipedia, the free encyclopedia

Invar variation due Ni percentage

Invar, also called FeNi, is an alloy of iron (64%) and nickel (36%) with some carbon and chromium. This alloy is known for its unique properties of controlled coefficient of thermal expansion (CTE). It was invented in 1896 by a Swiss Charles Edouard Guillaume, who later received the Nobel Prize in Physics in 1920.

Due to its low coefficient of thermal expansion at room temperature (about 10-6 K-1 in length; some formulations have negative thermal expansion, NTE) it is used in precision instruments (clocks, physics laboratory devices, seismic creep gauges, shadow-mask frames,[1] valves in motors, antimagnetic watches, etc.) However, it has a propensity to creep.

Although Invar is today a widely used material in many industries and applications, this is a particular trademark of a French company named Imphy Alloys: this company originates from Aciéries d’Imphy (a small city near Nevers, France) where the alloy was initially industrialised after its invention. The generic reference for Invar® is FeNi36.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #766 on: 21/07/2007 18:04:29 »
 Jabir (c. 721-c. 815), Arabian alchemist.

 Born Abu Musa Jabir ibn Hayyan, he is supposed to have lived in Al Kūfah and Baghdad (both now in Iraq). More than 500 treatises have been ascribed to him. Contemporary scholars, however, believe that most of these works date from the 9th to the 12th century. In addition, several works printed in Latin and ascribed to Geber, which is the Latin transcription of his Arabic name, probably date from the 14th century. These works give detailed descriptions of chemical processes, including experiments on the properties of metals. They develop the theory—of great importance to medieval and Renaissance scholars—that all metals are composed of mercury and sulphur and that it is possible to transmute base metals into gold.

 

Offline Simulated

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Re: A-Z of AVIONICS
« Reply #767 on: 21/07/2007 18:12:49 »
Kraner did his Science Fair..Just Messing..

Kashiwazaki-Kariwa Nuclear Power Plant

The Kashiwazaki-Kariwa Nuclear Power Plant (柏崎刈羽原子力発電所, Kashiwazaki-Kariwa genshiryoku-hatsudensho?, Kashiwazaki-Kariwa NPP) is a relatively modern nuclear power plant located in the towns of Kashiwazaki and Kariwa in the Niigata Prefecture, Japan (coordinates: 37° 25' 35" N, 138° 35' 40" E). It is owned and operated by The Tokyo Electric Power Company, which is the 3rd largest electric utility in the world.

By net electrical power rating, it is the largest nuclear plant in the world, with a total output of 8,212 MW. This is sufficient to provide electricity to about 16 million households. Since there are some 47 million households reported by the Japanese census (see Demography of Japan), this makes the Kashiwazaki-Kariwa NPP an extremely important cornerstone in the electricity market of Japan.

Furthermore, this gives the KK NPP the title of the 4th largest electric generating station in the world, behind 3 hydroelectric plants:
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #768 on: 21/07/2007 19:11:38 »
Loach, common name for any of about 200 species of freshwater elongated fishes of the carp order. Usually found at the bottom of streams and lakes, loaches occur in southern and Central Asia; several species are found in Europe, north-eastern Africa, and Ethiopia. Loaches reach a maximum length of about 30 cm (12 in). Their bodies have few, if any, scales. Three to six pairs of barbels (“whiskers”) are clustered about the mouth. The stone loach is a common European species used as food. The spined loach is found from Europe to Japan and has a collapsible spine between and slightly below its eyes. Two related Asian families are known as suckerbelly loaches and hillstream loaches.

Scientific classification: Loaches make up the family Cobitididae of the order Cypriniformes. The stone loach is classified as Noemacheilus barbatulus and the spined loach as Cobitis taenia.


Some Loaches chillin !!
 

Offline Simulated

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Re: A-Z of AVIONICS
« Reply #769 on: 21/07/2007 20:48:51 »
Mr. J, our Science Teacher that taught be lots!
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #770 on: 23/07/2007 12:36:39 »
Nucleic Acid =


From Wikipedia, the free encyclopedia

To read more extensively see:

http://en.wikipedia.org/wiki/Nucleic_acid



A nucleic acid is a complex, high-molecular-weight biochemical macromolecule composed of nucleotide chains that convey genetic information. The most common nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleic acids are found in all living cells and viruses.

Artificial nucleic acids include peptide nucleic acid (PNA), Morpholino and locked nucleic acid (LNA), as well as glycol nucleic acid (GNA) and threose nucleic acid (TNA). Each of these is distinguished from naturally occurring DNA or RNA by changes to the backbone of the molecule.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #771 on: 23/07/2007 22:28:24 »
Oak Bark

The bark of many species of oak, including that of the common oak, provide tannin, which is used for curing leather and for making blue-black ink.





 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #772 on: 23/07/2007 22:41:40 »
( Really, I did not know that about an oak! Cool )


Pirite (synonym of  Pyrite)=

Ambasaguas (Ambas Aguas; Ambas-Aguas), Muro de Aguas, La Rioja, Spain
© 2002 John H. Betts
Show Pyrite Photos (1279)
Formula:   
FeS   
 
2
   
System:   Isometric   Colour:   Pale brass-yellow
Hardness:   6 - 6½
Name:   Named in antiquity from the Greek "pyros" for "fire" because sparks flew from it when hit with another mineral or a metal.


Pyrite Group

Pyrite is a very common mineral, found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a constituent of metamorphic rocks. The brassy-yellow metallic colour of Pyrite has in many cases lead to people mistaking it for Gold, hence the common nickname 'Fools Gold'. Pyrite is quite easy to distinguish from Gold, it is much lighter, but harder and cannot be scratched with a fingernail or pocket knife.






« Last Edit: 25/07/2007 00:25:47 by Karen W. »
 

Offline Simulated

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Re: A-Z of AVIONICS
« Reply #773 on: 30/07/2007 03:10:26 »
Quails.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #774 on: 30/07/2007 03:28:55 »
Rigel

.............. is the brightest star in the constellation Orion and the seventh brightest star in the sky, with visual magnitude 0.12. Although it has the Bayer designation "beta", it is almost always brighter than Alpha Orionis (Betelgeuse). It also has the alternative traditional names Algebar or Elgebar, but these are almost never used.

The star's name comes from its location at the "left foot" of Orion. It is a contraction of Riǧl Ǧawza al-Yusra, this being Arabic for "Left Foot of the Central One". Another Arabic name is الرجل الجبار ar-riǧl al-ǧabbār, "the foot of the great one" (giant, conqueror, etc.), which is also the source of the variant name Algebar.

It is known as 参宿七 (Shēnxiù Qī, "The Seventh of the Three Stars") in Chinese. The mathematically questionable name is due to the fact that the Asterism of Three Stars was originally composed of just three stars, all of them in the girdle of the Orion. Later, four more stars were added to this asterism, but the name remained unchanged.
 

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Re: A-Z of AVIONICS
« Reply #774 on: 30/07/2007 03:28:55 »

 

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