RRL meaning in Medical ?

Answer:

What is Radio Research Laboratory mean?

The Radio Research Laboratory (RRL), located on the campus of Harvard University, was an 800-person secret research laboratory during World War II. Under the U.S. Office of Scientific Research and Development (OSRD), it was a spinoff of the Radiation Laboratory (Rad Lab) at MIT, and set up to develop electronic countermeasures to enemy radars and communications, as well as electronic counter-countermeasures (ECCM) to circumvent enemy ECM. The RRL was directed by Frederick E. Terman and operated between 1942 and 1946.

The RRL was engaged in both analysis and hardware development. They made significant contributions to the basic understanding of methods, theories, and circuits at very-high and ultra-high frequencies for radio systems, particularly in signals intelligence gear and statistical communications techniques. However, unlike the Rad Lab, the RRL never released significant details on its accomplishments; ECM and ECCM have always been closely guarded secrets by all nations.

The RRL conducted considerable work on chaff, light-weight aluminum strips dropped in clouds from aircraft to confuse enemy radars. Fred L. Whipple, an astronomer, made detailed analytical studies of this and devised a formula giving radar cross-section at a given wavelength per kilogram of chaff.

An example of RRL hardware development was Tuba (aka 'Project Tuba'), a giant ECM system generating continuous 80-kW signals in the range of 300-600 MHz to jam German Lichtenstein radars. The power tube (called Resnatron) for Tuba was developed at the RRL by David H. Shone and Lauritsen C. Marshall. Tuba used a horn antenna built of mesh wire 150 feet long and driven through 22- by 6- inch waveguides, possibly the largest ever built. Tuba was placed in operation in mid-1944 on the south coast of England. The radiated energy was such that it lit fluorescent bulbs a mile away and jammed radars throughout Europe.

The RRL staff did document some of the general theory that they developed. After the war, this was released in a two-volume publication Very High-Frequency Techniques, edited by Herbert J. Reich (McGraw-Hill, 1947).

reference

Full Form	Category
Rhizobium Research Laboratory	Academic & Science
Rainfall Runoff Library	Academic & Science
Rapid Research Letters	Academic & Science
Reconfigurable Robotics Lab	Academic & Science
Riverina Regional Library	Academic & Science
Review of Related Literature	Academic & Science
Rate of Rise of Leakage	Academic & Science
Merrill (wi)	Airport Code
Range Res.	Business
Regis Resources NL	Business
Regis Resources Ltd	Business
Relentless Resources Ltd	Business
Recommended Reading Library	Community
Ready Relevant Learning	Community
Rock & Roll Library	Community
Resource Requirements Language	Computing
Recommended Repair Level	Computing
Reteaua Romaneasca Live	Computing
Regis Resources Limited	General
Recommended Reading List	General
Remote Reference Layer	General
Rodeo Ralph Lauren	General
Resource requirement list	General
Radio Relay Link	General
by Ralph Lauren	General
Ralph and Ricki Lauren	General
Ralph and Ricky Lauren	General
Restricted Regions List	General
Register of Radiocommunications Licences	General
Rolls Royce Limited	General
Rear Reading Lamps	General
Running Red Lights	General
Rallye Region Limousin	General
Romanian Rally League	General
Runway Remaining Lights	Governmental
REWRAL	Indian Railway Station
Response Rate Limiting	Internet
Revenue Resource Limit	Medical
Righting Reflex Latency	Medical
Radio Research Laboratory	Medical
Resuscitation Research Laboratory	Medical
Reconfigurable Robotics Laboratory	Medical
Road Research Laboratory	Military and Defence
Rudder Reference Line	Space Science
Rocket Racing League	Sports