CD-ROM

CD-ROM is a Compact Disc that contains information accessible by a computer. While the Compact Disc format was formerly designed for music storage and playback, the format was later adapted to hold any form of binary data. CD-ROMs are commonly used to distribute computer software, including games and multimedia applications, though any data can be stored (up to the capacity limit of a disc). Some CDs seize both computer data and audio with the latter capable of being played on a CD player, whilst data (such as software or digital video) is only usable on a computer. These are called Enhanced CDs.

Although many people use lowercase letters in this acronym, proper appearance is in all capital letters with a hyphen between CD and ROM. It was also suggested by some, specially soon after the technology was first released, that CD-ROM was an acronym for "Compact Disc read-only-media", or that it was a more 'correct' definition. This was not the purpose of the original team who developed the CD-ROM, and common acceptance of the 'memory' definition is now almost universal. This is probably in no small part due to the prevalent use of other 'ROM' acronyms such as Flash-ROMs and EEPROMs where 'memory' is the correct term.

Water

Water is a tasteless, odorless, and nearly colorless substance in its pure form that is essential to all known forms of life and is known also as the most worldwide solvent. Water is a plentiful essence on Earth. It exists in many places and forms: mostly in the oceans and polar ice caps, but also as clouds, rain water, rivers, freshwater aquifers, and
sea ice. On the planet, water is always moving through the cycle linking vanishing, rainfall, and runoff to the sea.
Water that humans consume is called potable water. This natural resource is becoming scarcer in certain places as human population in those places increases, and its availability is a major social and economic concern.

A surprising substance
Changing appearances
Drinking water for more details on this topic, see Category: Forms of water.
Water takes many different shapes on earth: water vapor and clouds in the sky, waves and icebergs in the sea, glaciers in the mountain, aquifers in the ground, to name but a few. Through evaporation, precipitation, and runoff, water is constantly flowing from one form to another, in what is called the water cycle.
Because of the value of precipitation to agriculture, and to mankind in general, we give different names to its various forms: while rain is common in most countries, other phenomena are quite surprising when seen for the first time: hail, snow, fog or dew for example. When properly lit, water drops in the air can refract sunlight to create rainbows.
Similarly, water runoffs have played main roles in human history: rivers and irrigation brought the water needed for agriculture. Rivers and the seas offered prospect for travel and commerce. Through erosion, runoffs played a major part in shaping our environment provided that river valleys and deltas which provide rich soil and level ground for the enterprise of population centers.
Water also infiltrates the ground and goes into aquifers. This groundwater later flows back to the surface in springs or more outstandingly in hot springs and geysers. Groundwater is also extracted unnaturally in wells.

Lens

A lens is a device for either concentrating or diverging light, normally formed from a piece of shaped glass. Analogous devices used with other types of electromagnetic radiation are also called lenses: for instance, a microwave lens can be made from paraffin wax.The earliest records of lenses date to Ancient Greece, with Aristophanes' play The Clouds (424 BC) mentioning a burning-glass (a convex lens used to focus the sun's rays to produce fire). The writings of Pliny the Elder also show that burning-glasses were recognized to the Roman Empire, and mentions what is possibly the first use of a corrective lens: Nero was known to watch the gladiatorial games throughout a concave-shaped emerald (presumably to correct for myopia). Seneca the Younger (3 BC--65) described the magnifying effect of a glass globe filled with water.Widespread use of lenses did not happen until the invention of spectacles, probably in Italy in the 1280s.

Chair

A chair is a portion of furniture for sitting, consisting of a seat, a back, and sometimes arm rests, commonly for use by one person. Chairs also often have legs to support the seat raised above the floor. Without back and arm rests it is called a stool. A chair for more than one person is a couch, sofa, settee, loveseat or bench. A take apart footrest for a chair is known as an ottoman, hassock or poof. A chair mounted in a vehicle or in a theatre is simply called a seat. Chairs as furniture are usually not attached to the floor and so can be moved.
The back often does not extend all the way to the seat to allow for ventilation. Likewise, the back and sometimes the seat are made of porous materials or have holes drilled in them for ornamentation and ventilation.

The back may expand above the height of the head. There may be separate headrests. Headrests for seats in vehicles are important for preventing whiplash injuries to the neck when the vehicle is concerned in a rear-end collision.


Design and ergonomics

This unusual rocking chair is made of rough wood to give it an old-fashioned look. Chair design considers intended usage, ergonomics, as well as non-ergonomic functional requirements such as size, stack ability, fold ability, weight, durability, stain resistance and artistic design. Intended usage determines the desired seating position. "Task chairs", or any chair intended for people to work at a desk or table, including dining chairs, can only recline very slightly; otherwise the occupant is too far away from the desk or table. Dental chairs are essentially reclined. Easy chairs for watching television or movies are anywhere in between depending on the height of the screen.

Ergonomic designs distribute the weight of the inhabitant to various parts of the body. A seat that is higher results in hanging feet and increased pressure on the underside of the knees. It may also result in no weight on the feet which means more weight elsewhere. A lower seat may shift too much weight to the "seat bones".

White throated Kingfisher

The White-throated Kingfisher, White-breasted Kingfisher or Smyrna Kingfisher, Halcyon smyrnensis, is a tree kingfisher which is generally spread in south Asia from Turkey east to the Philippines. This kingfisher is fundamentally occupant over much of its range, not together from seasonal movements.

The first of the alternative English names is to be favorite because the geographical name is too preventive for this widespread bird, and the easternmost race lacks a white breast.

This is a large kingfisher, 28 cm in length. The mature has a bright blue back, wings and tail. Its head, shoulders, flanks and lower belly are chestnut, and the throat and breast are white.

There are four races opposed mostly in plumage shades, but H. s. glairs of the Philippines have only the neck and throat white. The flight of the White-throated Kingfisher is quick and straight, the short rounded wings whirring. The large bill and legs are intense red.

In flight, large white patches are visible on the blue and black wings. Sexes are similar, but juveniles are a duller adaptation of the adult. The call of this noisy kingfisher is a chuckling chake-ake-ake-ake-ake.


White-throated Kingfisher is a common class of a variety of habitats with some trees, and its range is expanding. It perches noticeably on wires or other exposed perches within its territory, and is a frequent sight in south Asia. This species mostly hunts large insects, rodents, snakes, fish and frogs. It is alleged to eat tired migratory passerine birds like Chiffchaffs where the opportunity arises.

Street light

A street light or street lamp, also known as a light normal or lamp normal, is a raised light on the edge of a road, turned on or lit at a certain time every night. Modern lamps may also have light-sensitive photocells to turn them on at twilight and off at sunrise, or turn on automatically in dark weather. It is also not uncommon for street lights to be on posts which have wires strung between them.

History of street lighting
Today, street lighting is most usually achieved using high-intensity discharge lamps, often sodium vapor lamps. Such lamps supply the greatest amount of illumination for the least burning up of electricity.
Before the advent of high-intensity discharge lamps, street light circuits used radiant light bulbs. These were often operated as high-voltage series circuits. To avoid the problem of the entire street going dark if a single lamp burned out, each individual street-lamp was equipped with a film cutout; a small disk of insulating film that separated two contacts connected to the two wires leading to the lamp. If the lamp failed, the entire voltage of the street lighting circuit was imposed across the insulating film in the cutout, causing it to rupture. In this way, the failed lamp was bypassed and enlightenment restored to the rest of the street. The circuit usually contained an automatic device to regulate the electrical current flowing in the circuit, preventing the current from rising as additional lamps burned out and thus preserving the life of the remaining lamps. When the failed lamp was finally changed, a new piece of film was also installed, once again separating the electrical contacts in the cutout. This style of street lighting was identifiable by the large porcelain insulator that separated the lamp and reflector from the light's mounting arm; the insulator was necessary because the two contacts in the lamp's base may have routinely operated at a potential of several thousands of volts above ground/earth.
And before shining lamps, gas lighting was employed. The earliest lamps required that a lamplighter tour the town at dusk, lighting each of the lamps, but later designs employed ignition devices that would routinely strike the flame when the gas supply was activated.

Jet Airways

Jet Airways is an airline based in India, helping domestic and international routes. The airline operates over 250 flights to 44 destinations across the country, with the greater part of flights operated from Chhatrapati Shivaji International Airport, Mumbai. It at present controls about 40% of India's aviation bazaar.

Background

Jet Airways was recognized on 5 May 1993 with a fleet of 4 Boeing 737-300 aircraft, with 24 daily flights helping 12 destinations.

Operations

Its 44 destinations include most of the big cities in India. Its worldwide destinations include Kathmandu, Colombo, Singapore, Kuala Lumpur and London's Heathrow Airport. Jet Airways was the first personal airline of India to fly to international destinations. It was later joined by Air Sahara. The daily Delhi-London service started in October of that year.

Jet Airways and Air Sahara are the only personal airlines which survived the Indian business downturn of the 1990s. On January 19, 2006 Jet Airways announced that it is buying Air Sahara for $500 million. This is the major invasion in India's aviation history and the resulting airline will be the country's largest.

In 2006 Jet Airways will be expanding it's route network from Delhi via the north Indian city of Amritsar, as it is to begin Amritsar-London and/or Amritsar-Birmingham.