EVOMOUSE

Easy and convenient

Setting up evoMouse is quick and simple and requires very little space. It connects via standard USB port or Bluetooth without installing software.

Multi-touch feature

In addition to common mouse operations, evoMouse recognizes multiple gestures when connected to supported devices.

Ergonomic

Because it allows natural movements and doesn’t require pushing around a physical object, evoMouse® may help reduce repetitive stress injuries.

*Picture shown evoMouse Plus (Bluetooth) model

                                                                                All the best:)

                                                                        Believed goal never fails:)

IES

What is IES?

Indian Engineering Services (IES/ES) constitute of engineers that work under the government of India to manage a large segment of public sector economy which constitutes of Railroads, Public works, Power, Telecommunications, etc.

A combined competitive examination is conducted by the Union Public Services Commission (UPSC) for recruitment to the Indian Engineering Services. The Examination constitutes of a written examination followed by an interview for personality test.

For detailed instructions about Application Procedure and Examination click on one of links in the left column.

The approximate number of vacancies, for the year 2011: 745

The recruitment of qualified candidates are made under the following categories:Category – I Electronics and Telecommunication Engineering

(i) Indian Railway Service of Signal Engineers

(ii) Indian Railway Stores Service

(iii) Indian Ordnance Factories Service

(iv) Indian Naval Armament Service

(v) Assistant Executive Engineer (in Ministry of Defence)

(vi) Engineer in Wireless Planning and Coordination Wing/Monitoring Organisation

(vii) Assistant Naval Stores officer (in Indian Navy)

(viii) Survey of India Service

CLICK TO DOWNLOAD IES SYLLABUS

Famous Digital Camera Samsung NX300

Pros

• Open source licenses
• Fast Autofocus
• Sharp images even from kit lens
• Great Wi-Fi connectivity
• Touch screen is very responsive

Cons

• Battery only charges in camera
• Less than stellar battery life

Performance
The NX300 is a real champ. The new hybrid autofocus system works quickly and the variety of lenses make this camera soar to the top of the charts.

Shooting Performance
The Samsung NX300 has a quicker autofocus than I expected--generally taking a fraction of a second to capture it. Choosing to include both contrast and phase detection autofocus was a good move for Samsung because it has clearly positioned itself to be a major contender amongst the Olympus and Sony mirror less cameras. Startup is also fast on the NX300. It takes about a second to turn on the camera and snap your first shot and the shutter lag is unnoticeable.
The NX300 comes with a hot shoe flash. It flips up for use or flips down when you want to store it on your camera, but not use it.
The battery in the NX300 is rechargeable BP 1130 rated for 160 minutes of video or 320 shots. Also, the more you use the Wi-Fi, the fewer shots you will be able to capture. That handy little feature can eat up a lot of power.
   
Lens Performance
The Samsung NX300 has a wide variety of lenses from which to choose. Although I can't say the 18-55mm is my all-time favorite kit lens ever, it does function very nicely with the camera. It is highly responsive and is useful in a multitude of photographic situations. But the best part is it produces some pretty sharp images for a kit lens.

Wi-Fi/GPS
I am happy to report that the Wi-Fi mode on the NX300 is easy and seamless. With no trouble at all, I accessed my Face book account and downloaded 2 images in less than 10 seconds. After that, I tried again with 7 more images. Again, each one took about 5 seconds to upload.
Video Quality
Video is captured as an MP4 file. The camera records Full HD 1080p at 60fps. It can also record 30fps or 24fps. Sound is captured with in-camera stereo sound. If you like better sound quality than you can get in-camera, the EM 10 microphone is available as an accessory for $130.
Image Quality
We were very impressed with our real world testing of the NX300. Colors were well represented and came out beautiful. Images are sharp with very little noise throughout ISO 3200. ISO 6400 started to show noticeable noise.
     
   

                                          Conclusion
The Samsung NX300 really does earn the title of the flagship NX mirror less camera. It offers a classic leatherette skin draped over a sleek metal body. It is solid and sturdy--the best made NX of the entire lineup. Its image quality is clean and sharp, only giving way to serious pixel degradation at ISOs above 6400. 

The Wi-Fi functionality is simple to use and unable to be beat by any other camera except for Samsung's own Galaxy Camera. So far, no other camera company has been able to create an easier Wi-Fi experience. This is great news for those that desire great image quality and want to have their images available on the web with the blink of an eye.
In addition to a great camera, Samsung is now packaging the NX300 with Adobe Light room giving users $150 worth of free software ($80 value if you already own a previous version of Lightroom).
                                                                                                   By
                                                                                       A.ANANDAKUMAR

Gate old question set with answers
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Electromagnetism: Fields, Waves & Theory

Both electric and magnetic interactions are elements of a single phenomenon called electromagnetism. There are four fundamental forces: the strong force, the weak force, gravitation and the electromagnetic force. The study of electromagnetism deals with how electrically charged particles interact with each other and with magnetic fields.

Electromagnetic fields

An electromagnetic field is generated by electrically charged objects. The field influences the behavior of other charged objects and extends infinitely in space. Stationary electric charges produce an electric field, while moving charges (electric currents) produce a magnetic field. An electromagnetic field consists of a combination of an electric field and a magnetic field.

Electromagnetic radiation (waves)

Charged particles emit or absorb energy in a wavelike form known as electromagnetic radiation. This radiation consists of two components: an electric field and a magnetic field. These oscillate at right angles to each other and to the direction in which the wave is propagating.

EM radiation travels at the speed of light, in a vacuum. EM radiation is part of the electromagnetic field that is far enough away from its source (a moving electrical charge) that the charge doesn't absorb the radiation. EM radiation draws energy away from its source, and also has momentum. The basic unit of EM radiation is the photon, a discrete packet of light. Light is a form of EM radiation, and can behave as either a particle or a wave.

Electromagnetic theory

James Clerk Maxwell developed a unified theory of electromagnetism in 1873. There are four main electromagnetic interactions:The force of attraction or repulsion between electric charges is inversely proportional to the square of the distance between them.Magnetic poles come in pairs that attract and repel each other much as electric charges do.

An electric current in a wire produces a magnetic field whose direction depends on the direction of the current.

A moving electric field produces a magnetic field, and vice versa. Maxwell also developed a set of formulas, called Maxwell's equations, to describe these phenomena.

Wireless Hacking. Projects for Wi-Fi Enthusiasts

Introduction to Wi-Fi

              Welcome to the world of “wireless magic.” 802.11 (Wi-Fi) wireless LANs have exploded onto the scene with an excitement not seen since the introduction of the Internet itself. Getting rid of the wires means getting rid of the hassle.With Wi-Fi, you can roam through your favorite coffee shop, boardroom or living room, all the while maintaining the convenience of high-speed connectivity.With Wi-Fi, life is good!

Once you’ve gone through the experience of setting up a local Wi-Fi network, your first instinct is

likely to think that “bigger is better.” Expanding the coverage and increasing the network cloud enables

you to share Internet resources with others as a community service. As long as you’re not breaking the

law (or violating your ISP’s terms of service), you should listen to that creative instinct and start getting

together with your neighbors (or others in your community) and begin planning a community wireless

network! This book is all about the challenges, thrills, and adventures of such an effort, started in San

Diego, and known as “SoCalFreeNet.” By offering this roadmap to you, the reader, we hope to inspire

more such efforts in neighborhoods all around the world.

        In this chapter, we will cover some of the Wi-Fi basics you’ll need to understand in order to complete

the wireless hacks found throughout this book.We start with the history and basics of 802.11,

including a review of the differences between a, b and g. Next, we cover wireless architectures and FCC

rules. Finally, we include some discussion on the social benefits of community wireless networking.

Wireless Hacking. Projects for Wi-Fi Enthusiasts