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Abbreviations/Acronyms: R

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R
resistance; roentgen; Rankine
RA
reduced aperture
Ra
arithmetic average
RACE
research into advanced communications in Europe
rad
radian
radar
radio detection and ranging
RAE
resistive anode encoder
RAI
random access integration
RAM
random access memory
RAS
remote active spectrometer
RBDE
radar bright display equipment
RBOC
regional Bell operating company
RBS
Rutherford backscattering spectrometry
RBV
return beam vidicon
Rc
Rockwell hardness
RC
reaction chamber; resistance × capacitance
RCVR
receiver
rd
rad
RDA
radar data acquisition
RDS
rapid display system
RED
radian energy distribution
REE
rare earth element
REM
rapid eye movement
RF
rangefinder; radio frequency; representative fraction
RFE
radio frequency excitation
RFI
radio frequency interference
RFID
radio frequency identification
RFOG
resonant fiber optic gyroscope
RFT
rich field telescope
RGB
red, green, blue
RGM
Raman gain module
RHCP
right-hand circular polarization
RHEED
reflection high-energy electron diffraction
RHEF
Raman holographic edge filter
RIA
Robotic Industries Association
RIBE
reactive ion-beam etching
RIMS
resonance ionization mass spectrometry
RIN
relative intensity noise
RIP
refractive index profile
RIR
resonant internal reflection
RISC
reduced instruction set computing
RIT
rod in tube
RL
return loss
RLG
ring-laser gyroscope
RMS
Royal Microscopical Society
rms
root mean square
RNF
refracted near field
ROADM
reconfigurable optical add/drop multiplexer
ROC
receiver operating curve
ROI
region of interest

Photonics DictionaryAbbreviations/AcronymsR

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