Wednesday, September 10, 2008

What causes tornadoes?

Thunderstorms develop in warm, moist air in advance of eastward-moving cold fronts. These thunderstorms often produce large hail, strong winds, and tornadoes. Tornadoes in the winter and early spring are often associated with strong, frontal systems that form in the Central States and move east. Occasionally, large outbreaks of tornadoes occur with this type of weather pattern. Several states may be affected by numerous severe thunderstorms and tornadoes.

During the spring in the Central Plains, thunderstorms frequently develop along a "dryline," which separates very warm, moist air to the east from hot, dry air to the west. Tornado-producing thunderstorms may form as the dryline moves east during the afternoon hours.

Along the front range of the Rocky Mountains, in the Texas panhandle, and in the southern High Plains, thunderstorms frequently form as air near the ground flows "upslope" toward higher terrain. If other favorable conditions exist, these thunderstorms can produce tornadoes.

Tornadoes occasionally accompany tropical storms and hurricanes that move over land. Tornadoes are most common to the right and ahead of the path of the storm center as it comes onshore.

Wednesday, September 03, 2008

Solar Spectrum

The total distribution of electromagnetic radiation emanating from the sun. The different regions of the solar spectrum are described by their wavelength range. The visible region extends from about 390 to 780 nanometers (a nanometer is one billionth of one meter). About 99 percent of solar radiation is contained in a wavelength region from 300 nm (ultraviolet) to 3,000 nm (near-infrared). The combined radiation in the wavelength region from 280 nm to 4,000 nm is called the broadband, or total, solar radiation.

Monday, August 25, 2008

Auto and White goods

This sector has several opportunities for investment due to the availability of raw materials at close proximity and a large consumer market for the product both in and around the State. These advantages include:-

Presence of large steel plants as a source of easy freight; World class industries (in and around the State) create an excellent vendor base to support the sector; Several industries like Usha Martin, Timken, Cummins, Tinplate, Indal, etc. produce a wide range of engineering products; Various industrial units involved in activities like mining and coking coal; A good combined market for the sector is provided by Jharkhand along with Bihar, Orissa, West Bengal and Chhattisgarh; Demand for white goods like refrigerators, washing machines, air conditioners, etc is high in the State and is rapidly increasing, etc.

Tuesday, August 19, 2008


Educational psychology is the study of how humans learn in educational settings, the efficiency of educational interventions, the psychology of teaching, and the social psychology of schools as organizations. Although the terms "educational psychology" and "school psychology" are often used interchangeably, researchers and theorists are likely to be recognized as educational psychologists, whereas practitioners in schools or school-related settings are identified as school psychologists.

Educational psychology is concerned with the processes of educational attainment in the general population and in sub-populations such as gifted children and those with specific disabilities.Educational psychology can in part be understood through its relationship with other disciplines. It is informed primarily by psychology, bearing a relationship to that discipline analogous to the relationship between medicine and biology. Educational psychology in turn informs a wide range of specialties within educational studies, including instructional design, educational technology, curriculum development, organizational learning, special education and classroom management. Educational psychology both draws from and contributes to cognitive science and the learning sciences. In universities, departments of educational psychology are usually housed within faculties of education, possibly accounting for the lack of representation of educational psychology content in introductory psychology textbooks.

Wednesday, August 13, 2008


Top Soil is the upper, outermost layer of soil, generally the top 2 to 8 inches. It has the most concentration of organic matter and microorganisms, and is where most of the Earth's biological soil activity occurs. Plants regularly concentrate their roots in, and obtain most of their nutrients from this layer. The actual depth of the topsoil layer can be purposeful as the depth from the surface to the first densely packed soil layer known as subsoil.

As one of the layers of soil on the Earth's surface, topsoil nowadays referred to as the A horizon. This layer is shaped from the deposition of eroded material as well as decaying organic matter. A variety of soil mixtures are sold commercially as topsoil, usually for use in civilizing gardens and lawns, or for ideal growing conditions in container gardens, by using potting soil, for example.

A most environmental concern known as topsoil corrosion occurs when the topsoil layer is blown or washed away. Without topsoil, little plant life is feasible. It takes approximately 100 years for one inch of topsoil to be deposited, if there is the correct ratio of organic material, inorganic material and moisture. This can be improved by using the terra preta system. However, there is 25 billion tons of topsoil absent each year.

Wednesday, August 06, 2008

Air parcel

An air parcel is fantasy volumes of air used by meteorologists to conceptualize the thermodynamic fluid motions of the atmosphere for make use of in weather forecasting. For mathematical simplicity, an air parcel is usually measured a rigid cube which has limited connecting with surrounding environmental air. The dimensions of this parcel are resolute by the atmospheric scale under study.

The significance of the concept of air parcels in meteorology fabrication in its ability to assist meteorologists in conceptualizing how areas of an atmosphere will feature rising and sinking motions, the magnitude of those motions, and the opportunity of ensuing clouds and precipitation. Many older numerical weather forecast models used the conceptual models of air parcels.

Wednesday, July 30, 2008

Lotus Temple

It is situated in Place of Kalkaji in South Delhi, near to Kalkaji Temple.The well-known place to visit Pilgrimage Centre, where people from all the faith approach for meditation and obtaining peace.

Shaped like a Lotus, the Lotus Temple is situated in Kalkaji in the south of Delhi. Made of marble, dolomite, sand and cement, the temple is the modern architectural wonder of India. A perfect place for meditation and obtaining peace and calm, the temple is visited by people from all walks of life. The Lotus Temple is a very new architectural marvel of the Bahai faith. The Bahai Faith is the youngest of the world's self-governing religions. Its founder, Bahadullah (1817-1892), is regard by Bahais as the most recent in the line of Messengers of God that stretches back beyond recorded time and that include Buddha, Moses, Abraham, Zoroaster, Christ and Muhammad.