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In laser beam welding coalescence is produced by the heat obtained from the application of a concentrated coherent light beam impining upon the surface to be joined .
It consists of a man-made cylindrical ruby crystal, around the outside of the
crystal is placed flash tube containing inert gas xenon and the capacitor bank.
When subjected to electrical discharge from the capacitors, xenon transforms a high proportion of the electrical energy into white light. As the ruby is exposed to the intense light flashes, the chromium atom of the crystal are excited and pumped to a high energy level. The effect is enhanced because the parallel ends of ruby rod are mirrored so that the red light that is produced reflects back and forth along the length of the crystal. Finally the total energy bursts over a threshold and escapes from the small hole in the mirror at one end of the ruby crystal, as the laser beam.
factors affecting engine performance
How to draw schiography in a perspective view of an object
COMPARISON OF PETROL ENGINES AND DIESEL ENGINES 1. In petrol engine, a mixture of air and petrol is drawn into the cylinder and compressed, whereas in case of diesel eng
True or False, In a PLC system, there is a physical connection between field input devices and output devices.
what is the equation relating the real exchange rate to the nominal exchange rate and domestic and foreign price levels
Providing fire resistant: If the building does not provide everyone with alternative exit routes then it may be acceptable for people to pass the fire if they are separated f
INSTALLATION OF PROPELLER The method of installation will depend on the type of propeller, and all instructions detailed in the appropriate AMM should be carefully followed; th
Integrated circuits: Integrated circuits, or IC's, have changed the entire electronics industry. Before IC's were developed, all electronic circuits consisted of individual (d
HEAT TREATMENT PROCESS
OIL PUMPS The oil pumps fitted in a recirculatory system are normally gear-type or Gerotor type pumps. The pumps are usually mounted in a pack containing one pressure pump and
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