Definition of Farad

Farad is the unit of capacitance.The capacitance of a capacitor is one farad if a  cahrge of one coulomb given to one of the plates of a parallel plate capacitor produces a potential difference of one volt between them

Electric dipole

It consists of  two charges equal in magnitude but opposite sign, separated by a small distance

The ways to increase the capacity of a capacitor

The capacity of a capacitor can be increased by:

1.increasing the area of plates

2.reduction the separation between the plates

3.inserting a dielectric(insulator) between the plates

Properties of electric field lines

1.No two lines cross each other
2.Electric field lines start from positive charges and end on negative charges
3.The tangent to a field line at any point gives the direction of of the electric field point.
4.The lines are closer when the field is strong and the lines are farther apart when the field is weak
5.The lines of force do not exist inside the conductor.

Electric field

The region around an electric charge in which it exerts force on other charges is called an electric field or field of force. Electric field is a scalar quantity as it has magnitude only.

Aston mass spectrometer

The apparatus to find the masses of positive ions or protons and to detect the isotopes is called aston mass spectrometer

discovery of neutron

The neutron was discovered by Chadwick

Atomic theory

Atomic energy was announced by Dalton in 1808

Atlantis

Bismellah

Every type of work which is liked by Allah ,should start with bissimellah .

X-rays

The reverse effect of photo-electric effect is called X-rays

Ionization energy

The energy in electron volt necessary to remove the most loosely bound electron from the neutral atom is known as the ionization energy

Excitation energy

Energy  required by an atom to move from ground state to higher energy state is called excitation energy

infra-red radiation

Radiation with wavelength longer than red light is called infra-red radiation

Positively charged

In 1911 Rutherfored concluded that central part of the atom called nucleus is positively charged

Discovery of Descartes

The mathematical meaning to the position of an object in space was given by Dscartes

Albert Michelson received noble prize

Albert Michelson received the Nobel prize for showing the experimentally  velocity of light is consistent and independent of the motion of the observer

J.C.Maxwell

Mathematical treatment for electromagnetic waves was given by J.C.Maxwell

H.Hertz

The experimental confirmation of electro-magnetic waves was provided by H.Hertz

Introduced by J.CMaxwell

Faraday' idea of lines of force in the mathematical language was introduced by J.C.Maxwell

Classical physics

The classical physics is based upon the laws of Newtonian mechanics

Motional emf

The emf enduced by the motion of a conductor across a magnetic field is called motional emf

Emf

The fact that emf is set up in a conductor when it is moved across a magnetic field was started by Michael Faraday and J.Henry

Discovery of Oersted

The fact that the electric current through a conductor produces magnetic field around it was discovered by Oersted

Transformer

A device consisting of two coils wound on iron core is called a transformer

Mutual induction

The process in which a change of current in one coil causes an induced emf in another coil nearby it is called mutual induction

Induced current

The current produced by moving the loop of wire across a magnetic field is called induced current

ohmic

A conductor which strictly obeys ohm's law is called ohmic

Super conductivity

The phenomenon that the resistance of a metal falls exactly to  zero at a few degrees above absolute zero is called super conductivity

Conductivity

The reciprocal of the resistivity of the material is called conductivity

Conductance

The reciprocal of a resistance is called conductance

Resistivity

The resistance of a meter cube of the substance is called resistivity

One ohm

The resistance of  a conductor through which a current of one ampere is flowing when the potential difference across its ends is one volt is called one ohm

Current

The charge per unit time through any cross-section of a conductor is called current

Drift velocity

The average velocity gained by the electrons in a conductor placed in an electric field is called drift velocity

An rectifier

The device used for conversion of AC into DC is called an rectifier

Potential barrier

Due to positive and negative ions on both sides of depletion region, an electric potential difference is developed around it, which is called potential  barrier

Depletion region

due to diffusion of free electrons from n-region into p-region a charge less region is formed around the junction, this region is called depletion region

Electronics

The branch of physics which deals with the emission , behaviour and effects of electrons in a device is called electronics

Electromegnets

Magnets made of low-retentivity but high permeability iron are called electromagnets

Coercivity

The process in which magnetization reduces to zero by reversing the magnetizing current is called coercivity

Hysteresis

magnetism lags behind the magnetizing current. This phenomenon is called hysteresis

Hysteresis loss

The energy required to magnetize or demagnetize the material is called hysteresis loss

Rententivity

When the current is reduced to zero and the material remains magnetized , this property is called retentivity

Ferromegnatic

The substances in which the atoms co-operate with each other in such a way so as to show a strong magnetic effect are called ferromagnetic

Diamegnetic

The substances in which magnetic fields produced by orbital and spin motions of electrons support each other and the atom behaves like tiny magnet are called diamagnetic

discovery of first super conductor

The first super conductor was discovered by Kmearlingh Omes in 1911 

critical temperature

The tepmerature below which the resistivity of a super conductor falls to zero is called critical temperature

super conductors

The materials whose resistivity becomes zero below a certain temperature are called superconductors

Valence band

A completely filled band is called valence band

semi-conductor diode

A combination of n-type and p-type material is called semi-conductor diode

p-type

when a silicon crystal is dopped with a trivalent impurity the doped semiconductor is called p-type

n-type

When a silicon crystal is doped with a pentavalent impurity, the doped semi-conductor is called n-type

intrinsic-semi-conductor

A semi-conductor in its extremely pure form is called intrinsic semi-conductor

Doping

The process of adding a small amount of impurity into the pure semi conductor lattice is called doping

1 eV

Narrow forbidden energy gap between the conduction and valence of a conductor is of the order of 1 eV

conductors

The substances which have partially filled conduction bands are called conductors

conduction band

the band above the valence band is called conduction band

Valence electrons

The electrons in the outermost shell of an atom are called valence electrons

Increases exponentially

With rise in temperature, the conductivity of semi-condutor material Increases exponentially

Brittle substances

Substances which break just after after the elastic limit is reached , are called brittle substances

Ductile substances

The substances which undergo plastic deformation until they break are known as ductile substances

Yield stress

The value of stress beyond which the body is permanently deformed is called yield stress

Ultimate tensile strength

The maximum stress that a material can withstand is called its ultimate tensile strength

Plasticity

If stress is increased beyond the elastic limit of the material ,it becomes permanently changed , this behavior is called plasticity

Tensile stress

When a stress changes the length of a body , it is called tensile stress

Stress

The force applied  on unit area to produce any change in the shape length or volume of a body is called stress

Elasticity

The ability a body to return to its original shape  is called elasticity

Definite melting point

Every crystalline solid has definite melting point

Gravitational force

The atoms or molecules in a crystalline solids are held together by gravitational force

cubical

Structure of NaCI particles is cubical

A unit cell

The smallest part of crystal lattice is called  unit cell

Crystal lattice

The whole structure obtained by the repetition of unit cells is called crystalline lattice

Unit cell

The smallest three dimensional structure of crystalline solid  which repeats over and over again is called unit cell

Three dimension

Definite geometry in a crystalline solids repeats itself over and over again along  three dimension

Plastics

The class of materials under which you classy nylon is plastics

Vibrational motion

Molecules of a solid possess vibrational motion

Polymeric solids

Plastics and synthesis rubbers are polymeric solids

X-ray technique

Arrangement of molecules in crystalline solids is studied by using X-RAY technique

Polymeric solid

A structure that is intermediate between solid and liquid is called polymeric solid

Glassy solid and amorphous solid

A solid in which there is no regular arrangement of molecules is called glassy solid and amorphous solid

Crystalline solid

A solid having regular arrangement of molecules throughout its structure is called crystalline solid

Solid

An element or compound having having a definite shape and volume is called solid

Solid state physics

The branch of physics which is concerned with the nature and properties of matter in the solid state is called solid state physics

Separation of dhaka

Dhaka separated from pakistan in1971 and became separated country with the name of bangladesh

Store incharged

Industry:	Manufacturing
Functional Area:	Procurement
Total Position:	1
Job Type:	Full Time/Permanent (First Shift (Day))
Department:	Production
Job Location:	Lahore, Pakistan
Gender:	Male
Age:	25 - 45 Year
Minimum Education:	Bachelor's Degree
Career Level:	Officer
Minimum Experience:	2 Years
Salary Range:	PKR. 15,000 - 20,000/Month
Require Travel:	Not Required
Apply By:	Feb 24, 2014
Job Posting Date:	Jan 24, 2014
	Job Description: Store Management Prepare GRN, IGP and other related documents Train and evaluate staff, check the flow of the store from time to time. Check the products before the opening and closing Act as In Charge whenever the presence of the Manager is not available Responsible for other store employees with their work   Skills Required:   Good presentation and Communication skills Working on SAP will be preferred  Apply through rozee.com

Independence day of Pakistan

Pakistan came into existence into the map of the world on 14 august 1947

Output devices

OUTPUT
DEVICES

vThe devices which are used to get output from

the computer are called output devices.

For example :

vMonitor

vPrinter

vPlotter

v Projector

Output

        OUTPUT

v Any information that has been processed and comes from a computer or computer device is considered output. When someone is viewing output, they're seeing it on an output device such as a computer monitor or a hard copy print out.

Optical scanners

OPTICAL SCANNERS
 v A device that converts printed images and text into digital information that can be stored as a computer file and processed by graphics software.

For example :

v Bar code reader

v MICR(Magnetic Ink Character Recognition)

Speech recognition

Speech Recognition

v Voice or speech recognition is the ability of a machine or program to receive and interpret dictation, or to understand and carry out spoken commands.

Touch screen

TOUCH SCREEN
A display device which allows the user to interact with a computer by touching areas on the screen

Light pen

     LIGHT PEN

v A small, photosensitive device connected to a computer and moved by hand over an output display in order to manipulate information in the computer.

Joystick

    JOYSTICK

v An upright lever used to control an airplane

v An lever used to control the movement of images on the screen in a computer or video game.

Trackball

    trackball

A trackball is a computer cursor control device used in many notebook and laptop computers.

Mouse

             MOUSE

v A mouse is an input device that’s look like a little bit like a mouse..

v It enables us to re-position the cursor on the screen where ever we want.

v It also has buttons on its top which communicate certain commands to the computer while pressed.

¢

Speakers

   SPEAKERS

v Speakers are popular output devices used with computer systems. They receive audio input from the computer's sound card and produce audio output in the form of sound waves.

Plotter

        PLOTTER

vA plotter is a computer hardware device similar to a printer that uses a pen, pencil, marker or other writing tool to make a design. Often these printers are used in schematics, CAD, and other print jobs.

There are two types of plotter :

vFlatbed plotter

v Drum plotter

Printer

        PRINTER

v It is a device that must be connected to a computer which allows a user to print items on paper, such as letters and pictures. It can also work with digital cameras to print directly without the use of a computer.

Monitor

        MONITOR
v The monitor displays the video and graphics information generated by the computer through the video card. Monitors are very similar to televisions but usually display information at a much higher resolution.

Scanner

       Scanners 
 v A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display. 

Types of input

TYPES OF INPUT
DATA

vUnprocessed text

vNumbers

vImages

vAudio

vvideo

INSTRUCTIONS

vPrograms

vCommands

vUser responses

input devices

INPUT  DEVICES 
Input devices are components or peripheral devices that feeds data or instructions into a computer

required business development manager

ndustry:	Advertising/PR
Functional Area:	Sales & Business Development
Total Position:	1
Job Type:	Full Time/Permanent (First Shift (Day))
Job Location:	Lahore, Pakistan
Gender:	Doesn't Matter
Age:	25 - 40 Year
Minimum Education:	Master's Degree
Degree Title:	MBA
Career Level:	Experienced (Non-Manager)
Minimum Experience:	2 Years
Salary Range:	PKR. 35,000 - 50,000/Month
Apply By:	Feb 8, 2014
Job Posting Date:	Jan 23, 2014

ob Description:

Client Services Management. Creative / Willing to work in tough schedules. Business Development for existing and new clients. apply through rozee.com

definition of output device

  OUTPUT

vAny information that has been processed and comes from a computer or computer device is considered output. When someone is viewing output, they're seeing it on an output device such as a computer monitor or a hard copy print out.

Store manager required

Industry:	Importers/ Distributors/Exporters
Functional Area:	Retail
Total Position:	1
Job Type:	Full Time/Permanent (First Shift (Day))
Job Location:	Madinah, Saudi Arabia
Gender:	No Preference
Minimum Education:	Certificate
Career Level:	Manager
Minimum Experience:	1 Year
Apply By:	Apr 22, 2014
Job Posting Date:	Jan 22, 2014 Job Description: Job no: 642016 Location: Madinah Oberoi Madinah M•A•C (Make-up Art Cosmetics) M•A•C (Make-up Art Cosmetics), a leading brand of professional cosmetics, was created in Canada. M.A.C's popularity has grown through a tradition of word-of-mouth endorsement from makeup artists, models, photographers and journalists around the world. The dedication to our pro roots can be seen in the extensive range of colours, formulas, finishes and tools. Our artists uphold the professional roots and are able to offer advice and tips to ensure customers can recreate fashionable looks at home. The Role: Your role will be to maximize store contribution by proactively driving sales, reducing stock loss and managing controllable costs. Motivating and developing your team members will be integral to your role whilst ensuring the store complies with all company regulations and procedures. About Us: M.H. Alshaya Co. is a leading international franchise operator for over 70 of the world's most recognized retail brands, including Starbucks, H&M, Mothercare, Debenhams, American Eagle Outfitters, P.F. Chang's, The Cheesecake Factory, Victoria's Secret, Boots, Pottery Barn, Office Depot and KidZania. The company operates over 2,500 stores across 8 divisions: Fashion & Footwear, Health & Beauty, Food Service, Optics, Pharmacy, Home Furnishings, Office Supplies and Leisure & Entertainment. Alshaya's stores can currently be found in 19 markets across the Middle East and North Africa, Russia, Turkey and Europe and the company employs more than 36,000 people from over 110 nationalities.   Skills Required:   Qualifications & Requirements: • Proven store management experience. • Retail fashion or Health & Beauty management experience. • Excellent English skills. • Good numerical, analytic, interpersonal and networking skills. • The ability to develop and motivate a team. apply through rozee.com

Required admin officer

Industry:	N.G.O./Social Services
Functional Area:	Administration
Total Position:	1
Job Type:	Contract
Job Location:	Lahore, Pakistan
Gender:	Doesn't Matter
Minimum Education:	Master's Degree
Career Level:	Officer
Minimum Experience:	3 Years (3 years (02 years of experience in INGO on similar position))
Apply By:	Jan 26, 2014
Job Posting Date:	Jan 21, 2014

Job Description:

Be Responsible for ensuring admin support to the program.. Ensure support to the program by developing links with the line departments and facilities the program activities by increasing communication between them.. Arrange for travel and stay of project staff Oversee the development, maintenance, repair of project offices and buildings Develop and oversee the maintenance of an efficient filing system for the administration. Over see the systems for and record keeping of incoming and outgoing correspondence for Sc field office level. Any other responsibilities assigned by management.

Skills Required:

• Good interpersonal, communication skills. • Good skills on computer operation, especially on Microsoft Excel,word, outlook • Commitment to Save the Children values

Apply through rozee.com

Required site supervisor

Site supervisor required for different window &door projects ,young energetic,min intermediate.

Aluminium fabrication, experience will be preferred

Maximum age 35 years

walk in interview

Mon 20& Tuesday 21 January 2014

(11am to2pm)

cell#03028258500

For sale

A running medical store is for sale
chowk mayo hospital
860sqft
contact;Sheikh irfan 0300-4883793

keyboard

The keyboard may look like a typewriter keypad to which some special keys have been added. The keys normally available on the keyboards are numeric,alphabetic,Function and additional special-purpose keys.Figure 1.2 shows the complete layout of an extended keyboard on a personal computer. It has some additional keys between the main keypad and the numeric keys, and status lights in the upper-right corner.This standard keyboard is also called QWERTY ,which describes the beginning keys in the top row of alphabetic letter.

Restaurant for sale

Reputed restaurant for sale at M.M Alam road, gulberg.
no brokers, only serious buyers are encouraged.
Phone;0300-8591791.0322-8882000

A part of Jonathan Swift's poem

TIS AND OLD MAXIM IN THE SCHOOLS
THAT FLATTERY'S THE FOOD OF FOOLS;
YET NOW AND THEN YOUR MEN OF WIT
WILL CONDESCEND TO TAKE A BIT.

A unique Sentence

Conscience is the only mirror that does not flatter.

Flattery

1: Flattery is  telling others exactly what they think of themselves.
2: Flattery makes friends and truth makes enemies.
3: Flattery is like chewing gum enjoy it briefly, but do not swallow it.

Flattery

Gullberg greens

The last date is 31 january for plot booking in Gullberg greens Islamabad

stroke

Stroke by Drs.Like Wu, Xiaojuan Wang and Bo Cheng No matter the morbidity rate or impotence, cerebrovascular disorder is on the top of all nervous system diseases found in adults. A stroke is brain abnormalities which are caused by the pathological process of the blood vessels. This disease is normally presented in acute attack in the middle-aged people and/or elderly, which may cause consciousness disorder and limb paralysis. Stroke is a major disease that can cause death and physical disability; the main cause of death for patients is when they present high blood pressure results. According to a different property, the classification of strokes is a ischemic cerebral vascular disease and a hemorrhagic cerebrovascular disease. Ischemic cerebral vascular disease is more common, cerebral infarction occupies 59.2%-85%, cerebral hemorrhage is less than 20% in different countries, except Japan. Ischemic cerebral vascular disease: (1) Transient ischemic attack (TIA, small stroke) etiological factor is related to cerebral arteriosclerosis. This is a kind of functional disorder caused by the brain tissue transient, ischemia, and focal lesions. (2) Cerebral thrombosis is a blood clot formed from the cerebral blood vessel local lesions, which is caused by atherosclerosis, arthritis, trauma, blood disease and other physical factors. (3) Cerebral embolism may be caused by an embolus, from many kinds of diseases, or an obstruction of the blood vessels in the brain.  Although, heart disease is the most common cause, next in importance are embolus from fractures, or post-traumatic fat in the blood, eggs or bacterial infection, pneumothorax air into the blood, and/or phlebophlogosis. Hemorrhagic cerebrovascular disease (1) Cerebral hemorrhage is a cerebral vascular rupture with bleeding; this is not including the traumatic cerebral hemorrhage. Cerebral hemorrhages are commonly caused by hypertension, cerebral arteriosclerosis, tumors, etc. (2) Subarachnoid hemorrhage is caused by a vascular rupture on the surface of the brain and the base of the brain with bleeding; the blood flows straight into the cavum subarachnoidale. Common causes are an aneurysm, vascular malformations, hypertension, arteriosclerosis, blood diseases, etc. Pathology of Stroke The pathology of cerebral ischemia and ischemic infarction include two pathological and physiological processes: 1. Shortage of oxygen and glucose caused by secondary vascular occlusion. 2. Tissue capacity processes collapse, a series of endocrine and metabolic changes occur in the cells and the cells membrane decomposition. Above pathology changes may cause a variety of symptoms, such as: stroke syndrome: abrupt non-convulsive, focal neurological deficits.  The most serious type is when patients have hemiplegic paralysis, or even coma. Neurovascular Syndrome: Different arterial occlusion and patients physical quality is caused by different symptoms, but there are still some typical symptoms: such as three partial syndromes and lacunar syndrome in pars geniculate artery stroke, etc. Course and Prognosis of Stroke Generally, when the later rehabilitation training begins the prognosis worsens. If patient begins to have rehabilitation training 2 weeks after stroke, then he will have poor hope of motor and language function recovery. Movement and language disorders will be a permanent disability for them if they last 5-6 months. Advance in the Treatment of Stroke Generally it is thought that stroke is preventable by paying attention to blood pressure levels, blood glucose levels, blood lipid levels, diet and body mass index can effectively prevent a stroke from occurring. For patients who have one cerebrovascular occlusion, they should pay attention to cerebral vascular occlusion in different blood vessels, which can occur again. For patients who have had sequel already, it was thought that there was no effective treatment to recover any functions, but they still can have rehabilitation training to keep muscle away from atrophy. With the development of science and technology, new treatments for patients who are suffering from stroke disability is now available, this kind of new treatment belongs to the field of regenerative medicine. Wu Stem Cells Medical Center found that necrotic nerve cells cannot regenerate after they die, which is caused by extensive damage of ischemia and hypoxia, but reserve cells and the cells around the lesion can be activated and are useable, which is brought about by regulation of the neural stem cell transplantation.

computer virus

A computer virus is a type of malware that, when executed, replicatesby inserting copies of itself (possibly modified) into other computer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be "infected".^[1][2][3] Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user's screen, spamming their contacts, or logging their keystrokes. However, not all viruses carry a destructive payload or attempt to hide themselves—the defining characteristic of viruses is that they are self-replicating computer programs which install themselves without the user's consent

Water

        Water is very important for life. We need water to drink, to wash our hands, to cook, to water plants and many other things.   Liquid water is found in many places. You see liquid water coming out of the faucet, when it rains, and running in a river.
 Pure Water is a chemical compound with the chemical formula H 2O.Water is the most essential element to life on Earth.
 A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent ...e liquid water is free of salt, rocks,  ...

Administrative officer required

Functional Area:	Administration
Total Position:	1
Job Type:	Full Time/Permanent
Job Location:	Riyadh, Saudi Arabia
Nationality:	Saudi
Gender:	Male
Age:	22 - 32 Year
Minimum Education:	Intermediate/A-Level
Career Level:	Experienced (Non-Manager)
Minimum Experience:	5 Years
Apply By:	Apr 15, 2014
Job Posting Date:	Jan 15, 2014
View Jobs by other companies

Job Description:

We require an Administrative Officer for our Company with the following details: Nationality: Saudi national Experience: Not less than 5years Age: Not more than 32 Location: Riyadh Gender: Male apply through rozee.com