Radar Guns - How it works

We might have wondered how the traffic police calculates the speed of our vechile... The answer to this question is the radar gun. Its other name is speed gun. Its main use is to track speed objects. It can track speed of moving objects only. We might have seen such guns in traffic police hands. They use them to find the speed of cars, automobiles and other trucks. Its not only used in regulating traffic but also used to track speed of balls and all moving objects in sports. There are radar guns for golf, hockey, Tennis, baseball, soccer and more... These radar guns come with display boards too... The basic principle behind the calculation of the speed of objects is the doppler effect. These radar guns sends out the radio signal which are then received as they bounces of the object. So when the signal bounces back its frequency changes and with the help of this frequency only the speed of the object is calculated. These radar guns may be hand held or vechile mounted. They are available for a variety of sports and their prices vary based on the range and quality. There are number of online shops that sell radar guns....

Smart Shoppers Expo 2010

View Larger Map Google Map YMCA Ground Chennai

Dinamalar, BSNL and Aachi Masala together jointly organizes the "Smart Shoppers expo 2010". It is being held in Chennai and Coimbatore. The expo in Chennai has already began. The duration of Smart Shoppers Expo is 5 days from January 14 to January 18, 2010. This is the place where we can buy all house hold things and lot more. There are about 200 stalls ... The expo will be open from(timings is) 11AM to 8.30PM. The venue of Smart Shoppers Expo 2010 is Royapettah, YMCA ground. Coimbatore Smart Shoppers Expo 2010 will be from 23rd to 26th of January 2010. The venue in coimbatore is Kodicia Arangam. The timings is same as before....