Questions

RADAR - RAdio Detection And Ranging.

A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. 

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.

Chinook

The legendary Indian cricketer Sunil Gavaskar has achieved a number of milestones in his cricket career and till this day, can now add another feather to his illustrious cap as a stadium in the United States of America will be named after him and he remains an inspiration for aspiring batsmen across India. The stadium, which is being built in Louisville, Kentucky, will be named as Sunil Gavaskar Field. It is a first for any Indian cricketer.