What is mechanical engineering?

Mechanical engineering is a broad topic that is the width of the necessity, design and manufacture everything from small parts and devices (eg sensors and micro-inkjet nozzles) to large systems (eg, space vehicles and machine tools). The role of mechanical engineer is a product from an idea to take to the market. To achieve this, a broad range of skills are required. The machine builder must acquire special skills and knowledge. He / she has the strength and the thermal environment to understand that a product, its parts or its subsystems deal; them for functionality, aesthetics, and the ability to withstand the forces and the thermal environment, they are subject design; and to determine the best way to manufacture them and ensure that they operate without failure. Maybe this is a skill that the machine builder's exclusive domain is the ability to analyze and design objects and systems with motion.

Since these capabilities for almost all that is necessary are, mechanical engineering is perhaps the broadest and most diverse of the engineering disciplines. Mechanical engineers play a central role in such industries as automotive (from the chassis of the vehicle, its every subsystem engine, transmission, sensors), aerospace (aircraft, aircraft engines, control systems for aircraft and space vehicles), Biotechnology (implants, prostheses, fluid control systems for the pharmaceutical industry), computers and electronics (drives, printers, cooling systems, semiconductor tools), micro-electromechanical systems or MEMS (sensors, actuators, micro power generation), energy conversion (gas turbines, wind turbines, solar energy, fuel cells), environmental control (HVAC, air conditioning, refrigeration, compressors); automation (robots, data and image capture, recognition, control), manufacturing (machining, machine tools, prototyping, microfabrication).





To put it simply, mechanical engineering is concerned with everything that moves, including the human body, a very complex machine. Mechanical engineers study materials, solid and fluid mechanics, thermodynamics, heat transfer, control, instrumentation, design and production of mechanical systems to understand. Specialized mechanical engineering topics include biomechanics, cartilage tissue engineering, energy conversion, laser-assisted materials processing, combustion, MEMS, microfluidic systems, fracture mechanics, nano mechanics, mechanisms, micro power generation, tribology (friction and wear) and vibration. The American Society of Mechanical Engineers (ASME) currently lists 36 technical departments, from Advanced Energy Systems and Aerospace Engineering from solid waste engineering and textile technology.

The width of the mechanical engineering discipline allows students a variety of career possibilities beyond some of the above mentioned industries. Regardless of the way they imagine for themselves after graduation, their training, they are mixed with the creative thinking that they remove to an exciting product or system, the analytical tools, their design goals, the ability, all the difficulties have made to achieve design makes available, and the team work for the design, manufacture and marketing of a system. These valuable skills could also pursue a career in medicine, law, consulting, management, banking, finance and so on.

For those interested in applied scientific and mathematical aspects of the discipline, graduate studies in engineering can lead to a career in research and teaching.

What is Electrical Engineering?

Electrical engineering is a field of engineering that deals generally with the analysis and application of electricity, electronics and electromagnetism. The field was first an identifiable occupation in the late nineteenth century after commercialization of the electric telegraph and power supply. It now covers a number of sub-themes including energy, electronics, control engineering, signal processing and telecommunications.

Electrical Engineering Electrical Engineering can. If a distinction is made, usually outside the United States, the electrical engineering as the problems with large electrical systems such as powertrain and engine control them, while electrical engineering is concerned with the study of small electronic systems deal including computers and integrated circuits. Alternatively, electrical engineers are usually transferred with the help of electricity and energy, while electronics engineers concerned concerned with using electricity, information is processed. In recent times become blurred the distinction by the growth of power electronics.

History

Main article: History of Electrical Engineering
The discoveries of Michael Faraday were the basis of the electric motor technology.

Electricity is a subject of scientific interest since at least the early 17th Century. The first electrical engineer was probably William Gilbert who designed the versorium: a device that detected the presence of statically charged objects. He was also the first to draw a clear distinction between magnetism and static electricity and credited with establishing the term electricity. In 1775, Alessandro Volta invented Electrophorus scientific experiments, a device that generates a static electric charge, and by 1800 Volta developed the voltaic pile, a forerunner of the electric battery .

However, it was not until the 19th Century that research began to delve into the topic. Notable developments in this century include the work of Georg Ohm, which quantifies in 1827, the ratio between the electric current and potential difference in a conductor, Michael Faraday, the discoverer of electromagnetic induction in 1831, and James Clerk Maxwell, who in 1873 published a unified theory of electricity and magnetism in his treatise Electricity and Magnetism.
Thomas Edison built the world's first large-scale electrical supply network.

In these years, the study of electricity largely as a branch of physics. Only at the end of the 19th Century that the universities that offer degree courses started in electrical engineering. The Technical University of Darmstadt, founded the first chair and the first faculty of electrical engineering worldwide in 1882. In the same year, under Professor Charles Cross, began the Massachusetts Institute of Technology offers the first option in a Department of Electrical Engineering Physics . In 1883 Darmstadt University of Technology and Cornell University introduced the world's first degrees in electrical engineering and in 1885 the University College London founded the first Department of Electrical Engineering in the United Kingdom. The University of Missouri later became the first faculty of electrical engineering in the United States in 1886 .

Nikola Tesla Long-distance electrical transmission networks possible.

During this period, the work increased dramatically in the field of electrical engineering. In 1882, Edison switched on the world's first large-scale electrical supply network that provided 110 volts direct current to fifty-nine customers in Lower Manhattan is available. In 1884 Sir Charles Parsons invented the steam turbine, which now generates about 80 percent of electric energy in the world with a variety of heat sources. In 1887 Nikola Tesla filed a number of known patents related to a competing form of power distribution as alternating current. In the following years a bitter rivalry between Tesla and Edison, as the "war of currents', and took over the preferred method of distribution. AC eventually replaced DC for generation and power distribution to the enormous range and improving the safety and efficiency of power distribution.

The efforts of the two has a lot to work on electrical engineering-Tesla induction motors and polyphase systems influenced the field for years to come, while Edison proved to work telegraphy and his development of the stock ticker lucrative for his company, which ultimately was General Electric. But by the end of the 19th Century, other key figures in the progress of electrical engineering is beginning to emerge.

Modern developments

During the development of radio, contributed many scientists and inventors, radio engineering and electronics. In his classic UHF experiments of 1888, Heinrich Hertz transmitted (via a spark gap transmitter) and detected radio waves using electrical equipment. In 1895 Nikola Tesla was able to detect signals from the transmissions of his New York lab at West Point (a distance of 80.4 km / 49.95 miles). In 1897, Karl Ferdinand Braun introduced the cathode ray tube as part of an oscilloscope, a crucial enabling technology for electronic television. John Fleming invented the first radio tube, the diode, in 1904. Two years later, Robert von Lieben and Lee De Forest independently developed the amplifier tube, called the triode. In 1895, Guglielmo Marconi promoted the art of Hertz's wireless methods. Early on he radio signals over a distance of one and a half miles. In December 1901 he sent radio waves, which were not affected by the curvature of the earth. Marconi later transmitted the wireless signals across the Atlantic between Poldhu, Cornwall, and St. John's, Newfoundland, a distance of 2,100 miles (3400 km). In 1920 Albert Hull developed the magnetron which would eventually lead to the development of the microwave in 1946, Percy Spencer of the oven. In 1934 the British military on track radar (which also uses the magnetron) under the direction of making Dr. Wimperis began, culminating in the operation of the first radar station at Bawdsey in August 1936 .

In 1941 Konrad Zuse presented the Z3, the world's first fully functional, programmable computer. In 1946, ENIAC (Electronic Numerical Integrator and Computer) by John Eckert and John Mauchly Presper followed in the early computing era. The computing power of machines allowed engineers to develop entirely new technologies and achieve new goals, including the Apollo missions of NASA and the moon landing.

The invention of the transistor in 1947, opened by William B. Shockley, John Bardeen and Walter Brattain the door for more compact devices and led to the development of the integrated circuit in 1958 by Jack Kilby and independently in 1959 by Robert Noyce . Beginning in 1968, Ted Hoff invented and a team at Intel's first commercial microprocessor, which announced the personal computer. The Intel 4004 was released a 4-bit processor in 1971, but in 1973 the Intel 8080, an 8-bit processor, made the first personal computer, the Altair 8800, possible.

Education:

Main article: Education and Training Electrical and Electronics Engineers

Electrical engineers typically possess an academic degree with an emphasis on electrical engineering. The length of study for such a level is completed usually four or five years and the final will be designated as Bachelor of Engineering, Bachelor of Science, Bachelor of Technology or Bachelor of Applied Science in function of the university. The degree usually includes units for physics, mathematics, computer science, project management and special topics in electrical engineering. Initially such topics cover most, if not all, of the disciplines of electrical engineering. Students then select one or more sub-disciplines towards the end of study to specialize.

Some electrical engineers also the possibility of further study as a Master of Engineering / Master of Science (M. Eng. / M.Sc.), A Master of Engineering Management, a Doctor of Philosophy (Ph.D.) in pursuing engineering, an Engineering Doctorate (Eng.D.), or an engineering degree. The Master and Engineer's degree may consist of either research, study or a mixture of both. The Doctor of Philosophy and Engineering Doctorate degrees consist of a significant research component and are often seen as the entry point into the science. In the United Kingdom and several other European countries, the Master of Engineering is often considered an undergraduate degree of slightly longer duration than the Bachelor of Engineering.

Source:wikipedia.org

How Do You Produce Electricity From Solar Energy

The answer to the question of how do you produce electricity from solar energy is fairly easy to understand once you have a slight knowledge of the subject.

Before you are able to produce electricity through solar energy, there needs to be some form of solar cell or panel.

The solar panels are made of a semi-conductive material, the most common material is silicon.

The semi-conductive material contains electrons which are quite happy just sitting there.

When photons (contained within the suns rays) hit the solar cells, the electrons absorb this solar energy, transforming them into conduction electrons.

If the energy of these photons is great enough, then the electrons are able to become free, and carry an electric charge through a circuit to the destination.

Any electrons that do not receive enough energy simply warm up, which heats your cell or panel, resulting in lowering the efficiency of the cell.

The lowering in efficiency is down to two main factors and they are; that the cell is not working to its full potential (e.g. some electrons may be lost), the second factor is when the electrons release heat, the panel also becomes warm, interfering with other aspects of the solar cells.

The more solar cells contained in a solar panel, or solar array, means the more output you will receive.

Quality cells are also a major factor in efficiency. If you purchase more expensive natural energy technologies, you are more likely to have a more efficient cell.

Another factor which affects solar panel efficiency is location. Obviously nearer the equator, you will receive a slightly better output with a given cell, but solar cells should always be facing the direction of the sun, and have no objects blocking the suns rays.

So there we have a basic understand of how you produce solar electricity from using energy within the suns rays.

Source :http://www.clean-energy-ideas.com/

What is Solar Thermal Energy?

Solar thermal is a form of energy in the sun to heat, which can produce are used in many ways. People have been using solar thermal energy for thousands of years for a variety of tasks, and modern technology has expanded the applications for solar thermal energy. This should not be using solar energy, which used the light from the sun to be mixed to produce electrical energy.

Some of the applications for solar thermal systems are very old. For example, the solar drying is a technique, the heat from the sun in food preservation. In this application, foods are placed on rocks, and the warmth of the sun is used to dry them. Evaporation ponds, as they are used to concentrate salt also use solar energy and desalination plants can also apply this energy.



This form of energy can also be used for cooking, sometimes in very creative ways. Solar ovens use solar thermal and solar thermal energy can be used to heat water to generate steam for cooking. Pasteurization can be achieved with the use of concentrated heat from the sun. Another use of this type of energy is used in the distillation of liquids, and of course in hot water heating. Water heated by solar thermal energy can be used for bathing, cleaning and cooking. It can also be used for home heating, hot water can be distributed as under a floor, to warm them.


Solar thermal can also be used for cooling, although it sounds paradoxical to use heat to cool, things. In this application it is in a process as evaporative cooling, which can keep the cooling of buildings known uses. All of these applications for the warmth of the sun can for beginners and advanced, for people in the communities around the world, including the communities in developing countries.

Finally, heat can be used from the sun to generate electricity. This requires some extensive support technology, but an advantage is that since the heat can be stored, a solar thermal system can work to fulfill 24 hours a day to power. These facilities are usually in areas located get much sun, so that the maximum amount to be used in thermal solar energy. Towers and reflective arrays of different kinds can be used, to collect the sun's heat and concentrate it for the purpose of generating electricity.

An Environmental Engineer Qualities

An environmental engineer is working very closely with industry and businesses to ensure they are in compliance with all environmental regulations and laws. In addition to fair working conditions, compliance with environmental engineer is also working with the company, less costly methods of production that are more effective and to develop within the rules. This function is very important for companies such as the cost of production is important to overall sales for the company.

An environmental engineer spends a considerable amount of time to keep up-do-date with the latest changes to environmental regulations and codes. He or she must remain familiar with current trends in the companies and solutions that other industries use within requirements, while decreasing production costs. Participation in seminars, workshops and training is important for an environmental engineer. The engineer will also need to communicate effectively the information to management teams in the various sectors and provide support to include new, environmentally friendly method for increasing production and decreasing costs.

Environmental engineers are often required to write reports on the status of the various types of environmental hazards or potential environmental hazards. According to reports, the engineer often retained to oversee the clean up or decontamination of the area on the basis of this report. The environmental engineer is also to monitor the cleanup to be sure it is done in accordance with all regulations. clean up risk assessments of sites, potential hazards, the development of new production or new areas are all closed due to environmental factors engineers.

Common activities include:
* Perform various ground, air or water tests, the risk of contamination or the extent of contamination, determine that occurred.
* Writing reports and proposals from data on the various environmental problems in a given area collected developed.
* Development of site clean-up, monitoring their implementation and compliance with environmental regulations.
* Meet with customers, cost-effective and environmentally friendly processing methods or to formulate methods of disposal.
* to coordinate meetings with government agencies to services in times of environmental accidents or disasters.
* Travel to various construction and industrial sites as requested.

Engineering Geology

Engineering Geology:

Engineering Geology is the application of geological sciences, engineering practice for the purpose of ensuring that the geologic factors that identified the location, design, construction, operation and maintenance of technical work and adequately addressed. Engineering geologists investigate and grateful geological and geotechnical recommendations, analysis and design of human development. The realm of the geologist is mainly in the field of earth-structure interaction, or examine how the earth or earth processes, effects of human made structures and human activities.

Engineering geological investigations can in the planning, environmental, civil or structural engineering design, value engineering and construction of public and private construction projects are carried out and during the post-construction phases of projects and forensic medicine. Works completed include, by engineering geologists, geological hazards, geotechnical, material properties, landslide and slope stability, erosion, flooding, drainage and seismic investigations, etc. Engineering geologic studies by a geologist or geologists who formed, trained and implemented has gained experience to the recognition and interpretation of natural processes in context, understanding how these processes influence of man-made structures (and vice versa), and knowledge about methods to mitigate that for hazards resulting from adverse natural or man-made conditions. The main objective of the geologist is to protect life and property against damage caused by geological conditions.

Engineering geology practice is also closely related to the practice of engineering geology, geotechnical engineering, soils, environmental geology and economic geology together. If it describes a difference in the content of the disciplines, it is mainly the training or experience of the practitioner.

History:

Although the science of geology has existed since the 18th Century, at least in its modern form, the science and practice of engineering geology as a recognized discipline not begin until the late 19th and early 20 Century. The first book, entitled Engineering Geology was published in 1880 by William Penning. In the early 20th Charles Berkey century, an American geologist trained, was the first American geologists, a number of projects for water supply in New York City worked, and later worked on the Hoover Dam and a variety of other technical projects. The first U.S. engineering geology textbook was written in 1914 by Ries and Watson. In 1925, Karl Terzaghi, an Austrian-trained engineer and geologist, the first text in soil mechanics (in German) published. Terzaghi is known as the father of soil mechanics, but also had a strong interest in geology, soil mechanics, Terzaghi considered a sub-discipline of engineering geology are. In 1929, Terzaghi, together with Redlich and Kampe published their engineering geology text (in German).

The need for geologists in civil engineering won worldwide attention in 1928 with the failure of the St. Francis Dam in California and the loss of 426 lives. More technical failures that occurred the following years also prompted the demand for engineering geologists working on large engineering projects.

In 1951 one of the earliest definitions of "engineering geologist" or "Professional Engineering Geologist" was the head of the Department of Engineering Geology of the Geological Society of America provided.

Practice:

One of the main tasks of the engineering geologist is the interpretation of landforms and soil processes in order could affect the possible geological and related man-made hazards, the civil structures and human development to identify. Almost all engineering geologists are first trained and educated in geology, especially during their undergraduate education. This background in geology provides the geologist with an understanding of how the Earth works, which is crucial in mitigating associated risks of the earth. The majority of engineering geologists and accounts, where they won special education and training in soil mechanics, rock mechanics, geotechnical, groundwater, hydrology and planning. These two aspects of the engineering geologist of Education offers a unique ability to understand and mitigate the potential problems associated with the soil-structure interaction.

Scope of the studies:

Engineering geological investigations are carried out:

* For residential, commercial and industrial developments;
* For government and military installations;
* For public works, such as a power plant, wind turbines, transmission line, wastewater treatment plant, pipeline (aqueduct, sewer, outfall), tunnel, trenchless construction, canal, dam, dam, building, rail, transit, highway, bridge - seismic retrofit, airport and parking;
* For mining and quarrying excavations, Mine Tailing dam, mine reclamation and my tunnel;
* To restore wetlands and habitat programs;
* For Coastal Engineering, sand replenishment, bluff or sea cliff stability, harbor, pier and port development;
* For offshore estuary, offshore and subsea pipelines, subsea cables, and
* For other types of facilities.

Source:From Wikipedia, the free encyclopedia

Simple LED Flashlight Explained

A commercially available, inexpensive mini-LED flashlight can typically from a white LED, a couple of button cells and a switch mechanism exist. Such a sample has been diagnosed here. The studied sample can be easily copied and built by anyone under ordinary technical skills.

LEDs were invented before, only the incandescent light-emitting devices that could be used easily and cheaply in flashlights. Although even now like torches are in use, but light bulbs, as we all know, pretty inefficient power consumption require frequent battery replacement and thus ultimately like torches are expensive to maintain and run.

With the advent of modern improved high-efficiency white LEDs, producing dazzling lights with negligible power become possible now, and burning torches slowly obsolete. LED flashlights are in fact so efficient that it can take batteries almost forever, so that they produce amazing light effects devices.

White LEDs built in lenses and can therefore no additional reflectors, which adds to their efficiency in the creation of sharp light pattern, however, the introduction of external parabolic mirror amplifies the light many folds and is, therefore, LED flashlights, the near eye-blinding Date produce illumination by ordinary power inputs.

In this article we will try to understand the electrical and mechanical details of a commercially available LED flashlight. Let us learn the rather simple structure of such a sample.
Simple internal configurations

A glowing LED is actually very simple because it does not contain much in the way of technical or electronic skills.

simply by connecting an LED's anode and cathode terminals to a power source, the LED lights are bright.

However, this is a criterion that must be strictly followed with LEDs, that the supply voltage must never much of its voltage drop, which may be different for different LEDs (colors.)
Mini LED flashlight cicuit, chart, picture

For example, the forward voltage of white LEDs around 3.6 volts, exceed the applied voltage should not be 4 volts (ideally), but have said that higher input voltages must be included only if the LED according to a calculated resistance is connected in series.

The next picture shows a mini LED flashlight, small prices (you can buy only 7 of them for a dollar) on the market, making it also a "use and throw" type of device. It basically operated from a single white LEDs from three tiny button cells in series.

Mini LED flashlight, LED flashlight mini image, image, mini LED torch, mini flashlight image, image

Because each cell produces a voltage of 1.5 volts, three of them stacked into a beautiful 4.5 volts, just perfect for the supply of a single white LEDs give very bright (the picture shows that simple.)

The dissected view of the burner, the following steps, which are easily copied and can even be built by an electronic beginners:

The electrical part of this LED flashlight consists essentially of an LED and arranged three button cells in series, ie the negative of the upper cell contacts the positive of the second cell and the negative of the second cell, the positive of the third cell affected, so that the positive of the first and the negative of the third cell free, so it leads to the LED over.

The cathode of the LED is fixed to the negative of the cell assembly is connected, while the anode to the positive voltage source through a strip of brass, positioned so that it is like a leaf switch "plot twist, the LED OFF switch in response to the sliding door ( with the fingers) of an external mechanism.

The concept for innovative applications:

LEDs on a Frisbee, ImageLED Car Roof Light diagram ImageAs already discussed to wire LEDs fairly simple, a number of interesting extensions small light may be using a few or many LEDs and a battery or assessed according to a voltage source.

For example, as can be joined together as shown to make a nice little top light for your car interior in the figure six LEDs. The positive of the circuit can be connected through the switch door, so that the LEDs light up immediately after opening one of the doors. By adding a capacitor, it can be the lights in order for a few more seconds, even after the doors closed and the switches are turned off.

Another application that would definitely impress your friends is attaching a couple of LEDs to a normal Frisbee. You can by drilling a few holes at regular Frisbee and setting LEDs in them, which would then be supplied by button cells, as illustrated in the accompanying diagrams with power.

source:brighthub.com

Hoover Dam-Bypass Bridge

A new bypass bride is built on the Colorado River near Hoover Dam. This project was completed in 8 years at a cost of $ 240,000,000. The 1,900-foot engineering marvel 890 meters above the Colorado River sits to drastically cut travel time along the main route between Las Vegas and Phoenix are recognized as drivers no longer have their way over the dam's winding two-lane road made up at a snail's pace.





"I know that the Hoover Dam is one of the wonders of the world," U.S. Transportation Secretary Ray LaHood said at a dedication ceremony on Thursday. "I do not know who is this name, but I hope that the bridge is another wonder of the world."

LaHood and his delegation of government officials, including Arizona Governor Jan Brewer, and U.S. Senate Majority Leader Harry Reid of Nevada rang, the span linking the silver and the Grand Canyon State as a key example of it worked to update nationwide infrastructure of the country.

source:menscrunch.com

Bandra Worli Sea Link - India's Civil Marvel

If we change from western suburbs to the islands of Mumbai, the only way out was to this day Mahim causeway. But today with the opening of the Bandra Worli Sea Link project of Sonia Gandhi's life of commuters would be much easier. Formerly with the unavailability of a different route, the distance of 8 km took almost 40 minutes, but with the opening of this Indian miracle of technology, the distance would be covered in just under for 10 minutes.

Talking about the engineering side of this project, the two cable-stayed bridges, a 600-meter channel in Bandra and the other twin-tower supports 350-meter at Worli channel of its kind in India. This eight-lane bridge has a cable-stayed bridge tower, nearly 43 stories high. The Cable Stay comprises 2250 km of high-strength galvanized steel wire that support these 20,000 tons of bulky structure. Several teams of engineers from Canada, China, Egypt, Switzerland, United Kingdom, Singapore, Thailand, Hong Kong, Serbia, Indonesia and the Philippines have been working on the project.

Bandra-Worli Sea-Link

It is built with the cost of more than 1,650 crore and it took 10 years to built it. The construction was marred by litigation by environmentalists and fishermen. But eventually it was built with a lot of changes. But it is believed that nearly 100 crore per day in terms of time and save fuel.

Some other facts about Bandra Worli Sea Link

1.The bridge lighting at a cost of about Rs 9-crore done (Rs 90 million) of Bajaj Electricals
2. Bandra-Worli sea is likely to consume 1,000 KW of electricity per day and this would be supplied by Reliance Power and the Brihanmumbai Electric Supply and Transport.
3. It is built as a BOT that is, operate and transfer built. A toll gate is installed and each commuter has to pay out of use of the sea

Here's a video we got hold on youtube. Thanks to our visitors - Sanjana that this link sent to us.

What Does a Electrical Engineer Do?

The electrical engineer has many potential job functions, but most work on designing products that are powered by electricity or produce energy. Sometimes, an electrical engineer his time to a single electrical product will devote. While there are millions of potential products, electrical engineer at work can have some medical examples, cell phones, handheld gaming systems and airline navigation systems.

When beginning a project, an electrical engineer usually starts out with the purpose of the product. He or she will then schedule the circuit wiring and electronic components. A prototype is to be generally on the extensive tests carried out to ensure that plans are designed as work, and that all components are built to work well together. An electrical engineer broke his test products to find out where they went wrong and how the design can be modified in order to avoid its repetition. He or she could for the examination of existing products that are not known or significant issues have easy to detect whether it can be improved.

Often work in teams with other engineers, an electrical engineer, proficient in the use of a wide range of engineering and design software and a variety of laboratory instruments. He or she must also be able to provide detailed guidance on the use and production of the final product. The engineer is often responsible for supervising the installation of the product to ensure it is properly installed and secure.,

In the United States, a bachelor's degree is the minimum training for entering this area is necessary, but many electrical engineers have master's or doctoral degrees. These degrees are usually in the areas of engineering, applied sciences, engineering, science or technology management. Either through professional degrees have certification before as an electrical engineer in the United States or Canada practiced accompanied werden.Der electrical engineer has many potential job functions, but most work on designing products that are powered by electricity or produce energy. Sometimes, an electrical engineer his time to a single electrical product will devote. While there are millions of potential products, electrical engineer at work can have some medical examples, cell phones, handheld gaming systems and airline navigation systems.

When beginning a project, an electrical engineer usually starts out with the purpose of the product. He or she will then schedule the circuit wiring and electronic components. A prototype is to be generally on the extensive tests carried out to ensure that plans are designed as work, and that all components are built to work well together. An electrical engineer broke his test products to find out where they went wrong and how the design can be modified in order to avoid its repetition. He or she could for the examination of existing products that are not known or significant issues have easy to detect whether it can be improved.

Often work in teams with other engineers, an electrical engineer, proficient in the use of a wide range of engineering and design software and a variety of laboratory instruments. He or she must also be able to provide detailed guidance on the use and production of the final product. The engineer is often responsible for supervising the installation of the product to ensure it is properly installed and secure.


In the United States, a bachelor's degree is the minimum training for entering this area is necessary, but many electrical engineers have master's or doctoral degrees. These degrees are usually in the areas of engineering, applied sciences, engineering, science or technology management. Either degree professional certification must be accompanied practiced before as an electrical engineer in the United States or Canada.

source:wisegeek.com

China builds world's longest bridge

26.4 long miles of Qingdao Haiwan Bridge would easily cross the English Channel and is nearly three miles longer than the previous record holder, the Lake Pontchartrain Causeway in the U.S. state of Louisiana.

The great structure connecting the center of the booming port city of Qingdao in east China's Shandong Province with the suburb Huangdao, spanning the vast blue waters of the Jiaozhou Bay.

Built in just four years at a price of £ 5500000000, shows the sheer scale of the bridge of the progress made by Chinese engineers in recent years made.


No longer dependent on Western know-how for such ambitious projects is the six-lane road bridge of more than 5,200 columns it was developed by the Shandong Gausu Group. When it opened to traffic later this year, the bridge is expected to carry more than 30,000 cars per day and the commute between the city of Qingdao and the sprawling suburbs of Huangdao of between 20 and 30 minutes cut.

At least 10,000 workers in two teams around the clock on the bridge which was built from opposite ends and connected to build the center in recent days, toiled.

A staggering 450,000 tons of steel was used in its construction - enough for nearly 65 Eiffel Towers - and 2.3 million cubic meters of concrete, the equivalent of filling 3800 Olympic swimming pools.

Chinese officials said that the bridge will be strong enough to withstand a magnitude 8 earthquake, typhoons and the effects of a 300,000 tons ship.

With its economy growing by 16 percent per year, Qingdao is one of the fastest growing and most prosperous cities in China. The main port of the Chinese Navy and home of Tsingtao Beer, China's most famous brew, host of the sailing competitions of the Olympic Games 2008 in Beijing.

Briefly occupied by Germany 1898-1914 Qingdao has mix of early 20th- Century European-style mansions and churches, beaches and saw reputation for fine seafood at one of China's most popular domestic tourist destinations in recent years. It is also considered a highly desirable place to live. A 2009 Chinese survey named as the most liveable city Qingdao China.

Qingdao residents have celebrated the bridge as a long overdue miracle.

"I'm so glad the bridge is finished. The old road between Qingdao and Huangdao am is so crowded, and now my trip will be much easier. We are a tourist city with beautiful beaches, it is important to good transport links" said a commuter on sina.com, China's largest Internet portal.

But people from other parts of China have denounced the huge cost of the bridge, especially since it only cuts the distance between Qingdao and Huangdao of 19 miles.

"To spend billions to save 20 minutes is a waste of taxpayers' money. It's just a show to make the project look like the governor of Shandong well," complained one commentator from the province of Jilin in northeast China.

China is already home to seven of the world's 10 longest bridges, including the world's longest, 102 miles of Danyang-Kunshan railway bridge that runs over land and water in the vicinity of Shanghai.

And with Beijing billion pumped into promoting China's infrastructure, the bridge is not the world's longest sea bridge Qingdao Haiwan be for very long.

In December 2009, work began on a bridge 31 miles, Zhuhai in southern Guangdong province, China's manufacturing heartland, is related to the financial center of Hong Kong. The £ 6500000000 project is expected to be completed in 2016.

What is Aerospace Engineering?

What is air and space technology?
Past, Present and Future

This article briefly describes the developments in the field of aviation and space technology and its applications in the global scene today.

While air and space technology is usually available on aircraft, it is not only the aircraft that this branch of study deals with it. Apart from aircraft, it also deals with spacecraft and airborne weapons technologies and the technical aspects of each of them. The aviation industry has applications in a variety of areas from commercial to military.

Over the years, the aviation and space industry has gained importance. It has included a barrier after another and is still growing on track. Air and space technology is not an independent branch of science. In fact, it has introduced all the important basic concepts from other branches of engineering. Aerospace engineers are developing technologies for use in civil transport, defense systems and space exploration.


History of Aerospace Engineering:


This branch of engineering was unheard of until the Wright brothers, their historic flight in 1903. After this event, the most important developments took in the field of aviation technology that is basically it for everything related to aircraft. During World War II, many new airplanes and rockets for military purposes and this was further to increase its growth.

The study of space has also been included in aviation and space technology first-1958th This expanded the scope of aviation and space technology and gave it a greater chance of taking risks to bring innovative ideas into reality. The progress of this branch of technology is monitored by many large corporations such as Aerospace Airbus, Boeing, Honeywell, Embraer, etc.



Components of air and space technology :
Air and space technology is concerned with development and manufacture of aircraft and spacecraft structures, craft control systems, control and navigation systems, development of tools for communication and ultimately the production of air-and spacecraft. Each of these air and space technology is critical to the efficient functioning of the air-and spacecraft. Therefore, air and space technology was divided accordingly and knowledge for engineering students in each of these areas together with the necessary practical training imparted to concern them fit for the challenges in this area.


Future Aerospace Engineers :
Aerospace engineers have acquired great significance in recent days. They are employed to design and manufacture aircraft, space vehicles and missiles. Although there are few agencies in the world dealing with space research can be, there is a wide range of companies in innovative new designs for aircraft. An experienced aviation engineer can certainly good chances in each of these companies.

If you get the issue of missiles, there are many state-funded institutions on various military projects. The goal of these companies is to produce missiles and other similar technologies to improve a country's defensive capabilities. This military projects provide an excellent opportunity for qualified aerospace engineers show off their talents to the world.

source:suit101

Europe dream is becoming True.

Hello my friends,in todays I am so happy.. My Erasmus exams results revealed and I won the Game :).. I am going Germany this summer for 3 months for a Summer Internship.. Now I started to preparations.It is amazing.I will go to a german language course and I will buy a Microsoft Office 2010 Training set. But there is a problem I need a company related with Electrical&Electronics engineering..I just found some companies and Universities but I am looking for better ones.Can anyone help me from Germany? :)

And I will write some website which helps about internship companies..Maybe it helps you.. :)

work.iagora.com
www.internabroad.com/
www.studentsgoabroad.com
graduateland.com(this is incredible)
www.praktikumsanzeigen.info/