Electrical World

Basic Principle of Interferometer Interferometer is a precise instrument for flow visualization. The variation of refractive index of the flowing gas with density is the basic principle used in thses system. The principle of interference of light waves is used. At a phase angle, the number of fringes are in relation to change in density with respect to the zero fringe condition. Description of Interferometer The arrangement consists of the following: Two windows to form a test section A light source Two Lenses L1 and L2 Two beam splitters B1 and B2 Two mirrors M1 and M2 A display Screen. Operation of Interferometer Light rays from a source are collimated with a lens L1. That is, the light rays become a parallel beam of rays when they come out of the lens L1. This collimated light rays are then split by a beam splitter B1. The two beams traverse at right angles to each other. That is the beam splitter B1 makes half of the light to go to mirrir M1. The rema...

WIRELESS MOUSE CONTROLLED DISH ANTENNA Objective of the project is to control the dish antenna position according to the mouse movement through zigbee transmission with help of microcontroller. Scope: In current process dish antenna is controlled manually by men or some wired remote. It’s difficult to change the position of the dish in a short time. So this project overcomes this problem. WIRELESS BUILDING HEALTH MONITOR Objective of the project is to monitor the health of the building through zigbee transmission with help of microcontroller. Scope: Nowadays there are so many buildings are become weak due to high temperature and increase of moist level. To avoid these kinds of problem we need to notice the building’s temperature and moisture status. In order to do that microcontroller is placed inside the wall of the building with sensors and zigbee. Through zigbee communication we can monitor the temperature, vibration and moist of the building from pc itself. ...