Electronics Engineering

Since mid 60's

Light Amplification by Stimulated Emission of Radiation

Just plug it in to your PC and Vista will pick it up, if not, there mis something wrong with your installation

In short, Light Amplification by Stimulated Emission of Radiation. Now, to explain. In a laser, there is something called a MEDIUM. This is where the photons are made. In all substances, there are atoms. In the atoms, there are electrons. The electrons are on orbits around the nucleus of an atom. There are more than one orbiting each atom. The electrons are EXCITED by getting hit by photons. The electrons absorb the energy from the photons they are hit by. To be on a certain orbit, the electron needs to have a certain amount of energy. When an electron is hit by a photon, it GAINS ENERGY so is jumps up to another orbit, because it has too much energy to stay on it's normal orbit. The electrons, though, ALWAYS have to go back to their original orbit (a law of physics) and in doing so, it needs to release energy in the form of a photon. Mirrors focus the light and it then comes out of the gun. There are more factors, but they are complicated and I cannot explain them for now. The main thing is the Excitation of the electrons then the release of the photons.

They move electrical signals through predetermined logic gates to execute an assembly instruction billions of times a second(at around the year 2000 and still today 2008 just improvents in architecture and the way the signals move are the usual reason they are more powerful now)

Refer to what is an assembly instruction and/or what are logic gates if still in confusion.

Clamping circuits use diodes and capacitors. First, the first circuit must be set up, then a?æsine wave should be input into it. The input and output should be observed and adjusted as necessary; then, the process should be repeated for the other circuits.

Temperature is only sometimes directly proportional to frequency. Temperature however is not always directly proportional to frequency in all cases.

Genaraly a device is a machine designed for a purpose.

A linear motor or linear induction motor is essentially a multi-phase alternating current (AC) electric motor that has had its stator "unrolled" so that instead of producing a torque (rotation) it produces a linear force along its length. The most common mode of operation is as a Lorentz-type actuator, in which the applied force is linearly proportional to the current and the magnetic field (F = qv × B). Many designs have been put forward for linear motors, falling into two major categories, low-acceleration and high-acceleration linear motors. Low-acceleration linear motors are suitable for maglev trains and other ground-based transportation applications. High-acceleration linear motors are normally quite short, and are designed to accelerate an object up to a very high speed and then release the object, like roller coasters. They are usually used for studies of hypervelocity collisions, as weapons, or as mass drivers for spacecraft propulsion. The high-acceleration motors are usually of the linear induction design (LIM) with an active three-phase winding on one side of the air-gap and a passive conductor plate on the other side. The low-acceleration, high speed and high power motors are usually of the linear synchronous design (LSM), with an active winding on one side of the air-gap and an array of alternate-pole magnets on the other side. These magnets can be permanent magnets or energized magnets. The Transrapid Shanghai motor is an LSM.

Doppler RADAR measures the speed of objects using the Doppler effect (discovered by the Austrian mathematician and physicist Christian Andreas Doppler in 1842 at the Prague Polytechnic) in addition to the position measured by ordinary RADAR.

The earliest version of Doppler RADAR was introduced by the U.S. Navy during WW2 on night fighters.

Doppler RADARs are used now in aviation, sounding satellites, meteorology, police speed guns, radiology and healthcare (fall detection and risk assessment, nursing or clinic purpose), and bistatic radar (surface-to-air missile).

Stoves have made it easier to cook. They have also made it safer to cook. Cooking on an open fire is dangerous for families.

A french fry in USA and a potato chip in UK.

less current flowing through them

If ther is a resistive load we got curent and voltage in phase. If the load is inductive curent lags behind the voltage. IN THIS CASE THER IS BOTH LOAD THAT MEANS CURENT WILL LAG BEHIND THE VOLTAGE

chemical property

Avalanche voltage is the voltage value that causes a reverse-biased semiconductor junction to break down and conduct. Sometimes this is undesirable. A rectifier diode in a power supply that avalanches has failed. It can also be desirable. A Zener diode used as a regulator works by avalaching at a specific voltage, thus limiting the circuit voltage at that level.

Application of semiconductors

It is free in India It's an open frequency

source :http://www.wpc.dot.gov.in/

10 dB gain means a voltage ratio of 3.16227766 to 1.

A weather radar is a type of radar used to locate precipitation, calculate its motion, estimate its type (rain, snow, hail, etc.), and forecast its future position and intensity.

Nano means a very tiny things that size approximately 1 to 100 Nanometers and devices means that can caries or hold other things.so nanodevices are 1 to 100 nm in size and which can helps to caries or transfer the materials or information one place/cell to other.

There were many types of actuators that are used in robotics, some of which are hydraulic actuator, ultra-piezoelectric, pneumatic actuator and piezoelectric. The actuator is an electromechanical device that converts energy.

• The p-type dopant elements are: boron, aluminum, gallium, and indium.
• The n-type dopant elements are: nitrogen, phosphorus, arsenic, and antimony.

Load Shedding is the action taken to reduce the load on something. It mainly refers to the electricity supply in order to avoid too much load on a generating plant.