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2578 "R"

() R
R,
Racah's method
gear rack
rack-and-pinion
rack and pinion focuser
to rack out
synthetic aperture radar
radar antenna
radar astronomy
radar beam
radar cross section
radar cross-section
radar data
radar depth
radar distance
radar echo
radar (echo) work
standard radar equation
radar equipment
radar experiment
radar investigation
radar measurements
radar method
radar observations
radar observations of solar system
radar pulse
radar receiver
radar reflection
radar reflector
radar results
radar set
radar signal
radar station
radar study
radar system
radar target
radar technique
Venus radar work
Radcliffe observatory
radial acceleration
radial current
radial girder
radial knife-edges
radial magnetic field
radial motion
radial optical thickness
radial oscillation
radial quantum number
radial truss
radial velocimeter
radial velocity
radial velocity relative to the Sun
radial velocity spectrometer
radian
radiance
meteor radiant
radiant emittance
radiant energy
radiant energy density
radiant flux
radiant intensity
radiant of shower
radiant power
delineation of meteor radiants
power radiated by source
radiated energy
radiating components
radiating element
radiating region
radiating surface
synchrotron radiation
radiation absorption
radiation belt
radiation capacity
radiation coefficient
radiation counter
radiation damping
radiation density
radiation effect
radiation energy
stellar radiation field
radiation flux
radiation frequency
noise radiation from antenna
noise radiation from atmosphere
noise radiation from radiometer
radiation from the earth
radiation from the whole Sun
radiation hazard
thermal radiation in infrared
radiation intensity
Planck's radiation law
radiationless quantum jump
radiationless transfer
radiationless transition
radiationless transition probability
radiation level
solar radiation pressure
radiation receiver
radiation resistance
radiation scattering
radiation sickness
radiation temperature
radiation theory
outer radiation zone
radiation zones
radiative envelope
radiative equilibrium
radiative excitation
radiative flow of energy
radiative flux
radiative process
radiative recombination
radiative transfer
selective radiator
hydroxyl radical
inorganic radicals
radii
radioactive decay
radioactive disintegration
radioactive element
radioactive heating
radio angular diameter
radio astronomer
Instituto di Radioastronomia
radio-astronomical
radio astronomical explorations
radio(astronomical) instruments
radio astronomical method
radio(-astronomical) observations
radio(-astronomical) observatory
radio(-astronomical) research
radio astronomical station
radio(astronomical) studies
radio (astronomical) work
Institut de radio astronomie millimetrique
instrumentation for radio astronomy
radio astronomy allocation
radio-astronomy frequencies
Nuffield Radio Astronomy Laboratory
radio astronomy method
Mullard Radio Astronomy Observatory
radio-astronomy radiometer
radio astronomy receiver
radio astronomy technique
Dominion radio astrophysical observatory
National Center for Radio Astrophysics
map of radio brightness
radio brightness distribution
radio-brightness temperature
radio brightness temperature distribution
type V (radio) burst
solar radio burst
radio components
radio condensation
radio continuum
radio corona
radio cosmology
radio data
radio detection
brightness distribution of radio disk
radio disk temperature
radio disturbance
radio Doppler effect
radio echo
radio echo apparatus
radio echo duration
radio echoing power
radio-echo measurements
radio-echo meteor
radio-echo method
radio echo studies
radio echo technique
radio eclipse
ratio of optical to radio emission
radio emission characteristics
radio emission diameter
radio emission from flares
radio emission from galaxies
radio emission from space
radio emission from stars
radio emission from the Milky Way
radio emission from the Sun
radio (emission) intensity
peak radio emission intensity
radio emission of the halo
radio emissive components
radio emissivity
radio emitter
radio emitting area
radio emitting region
distribution of radio energy
radio evidence
radio fade-out
radio features
radio flare event
radio flashes
radio flux
astronomical radio frequencies
radio frequency
radio-frequency albedo
radio-frequency amplifier
radio(-frequency) band
radio-frequency discharge tube
radio(-frequency) disk
radio-frequency emission
radio(-frequency) energy
radio(-frequency) flux density
radio(-frequency) isophotes
radio-frequency line
galactic radio-frequency noise
radio-frequency power
radio-frequency radiation
radio-frequency range
radio-frequency rays
tuned radio-frequency receiver
radio-frequency region
radio-frequency spectrum
radio galaxy
radio heliograph
radioheliograph
radio image
radio impulse
radio interference
radio interferometer
radio interferometer observations
radio interferometer record
radio interferometer recording
radio investigations
radio link
radio link system
radio longitudes of Jupiter
radio luminosity
radio luminosity function
radio magnitude
radio map
radio map of the Galaxy
radio means
radio measurements
21-cm radiometer
radiometer calibration
radiometer excess noise temperature
radiometer output
radiometer receiver
radiometer sensitivity
radiometer stability
radiometer system
radiometer (system) noise
overall radiometer system noise
radio method
radiometric
radiometric magnitude
radiometric map
radiometric measurements
radio nebula
solar (radio) noise
radio noise
cosmic radio noise absorption
radio (noise) outburst
radio nonthermal brightness temperature
radio object
solar radio observations
Nancay radio observatory
radio occupation
Jovian radio outburst
radio performances
radio phenomenon
radio picture
radio picture of the Sun
radio plage
radio plage component
radio polarimeter
radio polarization
radio position
radio position measurement
radio power
radio pulse
radio radiation
radio range
radio range of frequencies
radio range of wavelengths
radio receiver
radio receiving apparatus
radio red shift
radio redshift
radio reflection
radio reflection method
radio reflector
radio region
radio results
radio scintillation
radio signal
radio size
radio sky
radio sky temperature
spectrum of radio source
radio source count
radio source density
radio source distribution
radio source galaxy
radio source observations
decameter (radio) sources
survey of radio sources
radio-source spectrum
radio source structure
radio spectral index
21-cm radio spectral line
radio spectrograph
radio-spectrograph
radio spectrometer
radio spectroscopy
solar radio spectrum
radio spot
weak radio star
radio star diameter
radio star distribution
radio-star interferometer
radio star interferometry
radio star investigations
radio-star luminosity
radio star position
radio star record
scintillation of radio stars
radio star statistics
radio star studies
radio star survey
radio star trace
radio star twinkling
radio star work
radio storm
radio Sun
radio techniques
steerable (radio) telescope
Parkes radio telescope
radio telescope antenna
radio telescope beam
radio telescope of great sensitivity
radio telescope receiver
radio temperature
ratio of radio to light emission
ratio of radio to optical power emitted
radio tracking
radio transmitter
radio universe
radio-wave emission
radio wave generation
solar radio wave intensity
cosmic radio(wave) intensity
radio wavelength band
radio wavelengths
radio-wave propagation
radio wave region
thermal radio waves
radio (wave) scattering
radio waves from space
radio waves from the Galaxy
radio wave spectrum
radio window
radio Zeeman effect
radium
terrestrial radius
radius vector
radome
variable-speed R. A. drive
raies ultimes
coronal rain
rainbow
raise rate
Raman active vibration
Raman bands
Raman effect
Raman inactive vibration
Raman line
Raman scattering
Raman spectrum
R.A. micrometer
Ramsauer effect
Ramsden disk
Ramsden eyepiece
Ramsden ocular
Ramsden's eyepiece
random distribution
randomly polarized
random motions
random noise
random polarization
random process
random sample
random velocities
free spectral range
range dispersion of signals
range measurement
range of brightness response
radio range of frequencies
range of luminosity
range of phase angles
range of sensitivity
range of variation
radio range of wavelengths
long range studies
rapid-acting developer
rapid development
rapid drying
rapid fixing bath
rare earth elements
raster scan
RAS thread
RATAN-600
zenithal hourly rate
rate of drive
rate of emission
rate of expansion
rate of fading
rate of flow of radiation
rate of frequency drift
rate of ionization
rate of occurrence
rate of recession
angular rate of rotation
cone-and-disk rater
Strehl ratio
intensity ratio in multiplets
intensity ratio in Zeeman components
ratio of minimum to maximum in record
ratio of minimum to maximum of interference fringes
ratio of optical to radio emission
ratio of radio to light emission
ratio of radio to optical power emitted
raw data
raw image
secondary cosmic ray
cosmic ray burst
cosmic ray counter
ray-crater
cosmic ray decrease
gamma ray detector
cosmic ray electrons
cosmic ray energy
cosmic ray event
total cosmic ray experiment
cosmic ray flare
cosmic ray flux
sudden cosmic ray increase
cosmic ray intensity
rayleigh
Rayleigh criterion
Rayleigh distribution
Rayleigh fading
Rayleigh-Jeans approximation
Rayleigh-Jeans formula
Rayleigh-Jeans law
Rayleigh numbers
Rayleigh-resolution
Rayleigh scattering
Rayleigh's phase function
ray of minimum deviation
cathode ray oscilloscope
cosmic ray particles
cosmic ray production
cosmic ray protons
hard X ray region
paraxial rays
infrared ray sensitive emulsion
cosmic ray spectrum
cosmic ray spike
cosmic ray storm
ray structure
ray system
gamma ray telescope
ray tracing
Ockham's razor
R-branch
R center
R Coronae Borealis star
R Coronae (Borealis) variables
, Re
reactance amplifier
thermonuclear reaction
machine readable form
zero reading
reading device
reading micrometer
reading of circle
meridian mark readings
real
real brightness
real color
real focus
real image
real position
real size
real Sun
receding galaxies
nebula receding nebulae
receding star
received echo
received power
received radiation
received reflection
super heterodyne receiver
receiver band
receiver band pass
receiver bandwidth
receiver fluctuations
receiver gain
receiver gain fluctuations
receiver-gain variations
receiver input
spaced receiver method
receiver noise
receiver noise factor
receiver noise figure
receiver noise power
receiver noise (power) level
receiver (noise) temperature
excess receiver noise temperature
receiver output
receiver output fluctuations
receiver output meter
receiver sensitivity
receiver system
receiver tuning
receiver using Dicke switch
receiving antenna
receiving apparatus
receiving area
receiving beam
receiving equipment
receiving system
reception (sensitivity) pattern
speed of recession
recession of galaxies
recession velocity
reciprocal linear dispersion
principle of reciprocity
reciprocity curve
reciprocity failure
reciprocity law
photographic reciprocity law failure
dead reckoning position
recognizable
recognizable diffuse levels
recoil electron
radiative recombination
recombination coefficient
recombination continuum
recombination line
recombination spectrum
two-aerial interferometer record
tape recorder
recorder sensitivity
solar recording
recording camera
recording device
recording element
recording instrument
recording meter
recording microphotometer
recording paper
recording system
method of recording transits
record of radio waves
record of the Sun
recover
recovery
rectangular axes
rectangular components
rectangular coordinates
rectangular source
rectangular velocity components
phase-sensitive rectifier
rectifier photocell
twenty-seven-day recurrence
twenty-seven-day recurrence tendency
recurrent
recurrent disturbance
recurrent group
recurrent nova
recurrent outburst
recurring comet
towards the red
reddened star
interstellar reddening
reddening curve
reddening ratio
red-dot finder
red dwarf
red dwarf star
red end
red giant
red giant star
redistribution
redistribution in frequencies
red line
relativity red shift
radio redshift
red-shift effect
red-shift phenomenon
red star
red supergiant
reduce
reduced elongation
reduced mass
reduced radiation
reduced spot number
reduced term
focal reducer
noise reduction
image reduction and analysis facility
reduction from apparent place to mean place
reduction of observations
reduction of plates
reduction process
reduction screen
reduction to the Sun
reemission
reemit
reexposure
system of reference
reference circle
reference color
reference mark
reference position
reference star
southern reference star program(me)
southern reference stars
reference system
reference to...
refer to...
refigure
refiguring
reflect
reflectance
reflected echo
reflected image
reflected light
reflected pulse
reflected ray
reflected signal
reflected sunlight
reflected wave
effective reflecting area
reflecting membrane
reflecting mercury basin
reflecting nebula
reflecting power
reflecting prism
reflecting screen
reflecting sheet
reflecting slit jaw
diffusely reflecting sphere
reflecting surface
reflecting telescope
reflecting wire mesh
total reflection
reflection coefficient
reflection echelon
reflection factor
reflection grating
reflection index
reflection loss
radio reflection method
reflection nebula
total reflection prism
reflective coating
reflective power
silver reflectivity
tillable reflector
paraboloid (reflector) antenna
reflector concrete reflector
Baker reflector-corrector
reflector-corrector telescope
reflector framework
parabolic (reflector) radio telescope
arm of reflectors
reflector telescope
reflector(-type) antenna
single lens reflex camera
reflexion
reflex zenith tube
refocus
reform of calendar
refracting angle
refracting edge
refracting telescope
refraction
refraction anomalies
refraction correction
correction for average refraction effect
refraction effects
refraction in irregularities
apparent rotation by refraction of field
refraction of radio waves
refraction oscillations
refractive
refractive effects
refractive index
refractive power
refractivity
Yerkes refractor
refrigerated
soft X-ray region
region around the pole
region of correct exposure
region of origin
region of over-exposure
central region of the Galaxy
region of under-exposure
21-cm line emitting regions
registering apparatus
registering micrometer
photographic registration
photoelectric registration of star transit
linear regression
regression of nodes
regrind
regular doublet
regular doublet law
regular galaxy
regular multiplet
regular reflection
regular term
regular variables
temperature regulating system