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543 "L"

• laboratory
• laboratory astrophysics
• laboratory source
• laboratory spectrum
• lag
• Lagrange's equations
• Lagrangian point
• Lα line
• Lα- radiation
• Lα-
• Lambert law
• Lamb-Rutherford shift
• Lamb shift
• laminar stream
• lamp
• Lande formula
• Lande g-formula
• Lande g-Value
• Lande interval rule
• Lande's splitting factor
• landing
• landscape
• Lanphier shutter
• lanthanides
• lanthanum eyepiece
• lanthanum glass
• lap
• Laplace's operator
• La Plata observatory
• Laporte rule
• large-aperture telescope
• large-area photomultiplier
• large binocular telescope
• large diameter source
• large flare
• large flare event
• large microwave outbursts
• large observatory
• large outburst
• large outbursts of microwave radiation
• large radio telescope
• large reflector
• large-scale
• large-scale galactic motions
• large-scale motions
• large-scale structure
• large telescope
• large transit
• large zenith telescope
• Larmor frequency
• Larmor precession
• Las Campanas observatory
• laser
• laser collimator
• laser spark
• La Silla observatory
• last quarter
• last stage
• latent image
• lateral angle
• lateral refraction
• lateral support assembly
• late spectral types
• late stars
• late-type
• late-type stars
• latitude
• latitude difference
• latitude distribution
• latitude observations
• latitude of exposure
• latitude service
• latitude stars
• latitude station
• latitudinal
• lattice arrangement
• lattice vibrations
• Laue pattern
• launch
• launching
• launching vehicle
• lava bed
• lava crater
• lava flow
• lava pool
• law
• law of areas
• law of Bunsen and Roscoe
• law of darkening
• law of gravitation
• law of polarity
• law of refraction
• law of universal gravitation
• law of zones
• laws of planetary motion
• layer
• leader
• leader spot
• leading edge
• leading spot
• leading sunspot
• lead sulphide cell
• leap month
• leap year
• leap-year
• least squares fit
• least squares method
• least-squares solution
• legal day
• Legendre function
• length
• lengthening
• lengthening of the day
• length of exposure
• lens
• lens antenna
• lens astrograph
• lens auxiliary lens
• lens carrier
• lens cell
• lens curvature
• lens distortion
• lens distortion correction
• lens efficiency
• lens-mirror camera
• lens power
• lens shutter
• lens speed
• lens system
• level
• level adjustment
• level-crossing method
• level error
• level reading
• level surface
• level width
• lever
• liberation of gases
• libration
• libration effect
• libration in latitude
• libration in longitude
• libration point
• Lick observatory
• Lick refractor
• Lick system
• life
• life of developer
• lifetime
• life time
• Ligand field
• light
• light absorption
• light adaptation
• light beam
• light bridge
• light bucket
• light cell
• light curve
• light-curve
• light detector
• light distribution
• light-distribution
• light distribution in seeing image
• light efficiency
• light emission
• lightening
• lighter
• light filter
• light fog
• light gathering power
• light-gathering power
• light grasp
• light-grasp
• light image
• light intensity
• light interference
• light loss
• light minute
• light nebula
• lightning
• light path
• light-path
• light pollution
• light pollution rejection filter
• light pressure
• light propagation
• light pulse
• light quantum
• light ray
• light-ray
• light-reflecting power
• light ripples
• light scattering
• light-scattering
• light sensitive
• light sensitiveness
• light sensitivity
• light sensitization
• light shield
• light slide
• light source
• light-source
• light spectrum
• light-speed
• light time
• light wave
• light year
• light-year
• limb
• limb brightening
• limb corrections
• limb darkening
• limb effect
• limb error
• limb flare
• limb irregularities
• limb spectrum
• lime spar
• limit
• limitation
• limitation to receiver sensitivity
• limiting apparent magnitude
• limiting energy
• limiting error
• limiting frequency
• limiting magnitude
• limiting photographic magnitude
• limiting resolution
• limit of band series
• limit of detectability
• limit of line series
• limit of resolution
• limit to sensitivity
• line
• line absorption
• line absorption coefficient
• linear array
• linear dispersion
• linear electron density
• linear enlargement
• linear expression
• linear function
• linearly polarized
• linearly polarized radiation
• linear molecule
• linear oscillator
• linear polarization
• linear regression
• linear response
• linear scale
• linear size
• linear Stark effect
• linear target
• linear velocity
• line blanketing
• line-blanketing index
• line broadening
• line center
• line contour
• line emission
• line feed
• line fluorescence
• line formation
• line formation problem
• line intensity
• line merging
• line of apsides
• line of force
• line of Hα
• line of sight
• line-of-sight
• line-of-sight component
• line-of-sight motion
• line-of-sight speed
• line of sight velocity
• line-of-sight velocity
• line of syzygies
• line profile
• line radiation
• line ratio
• line receiver
• line scattering
• line shift
• line shifter
• line spectrum
• lines per inch
• line splitting
• line strength
• line target
• line to be washed out
• line width
• link
• liquid core
• liquid mirror
• liquid propellant
• literature
• Littrow condition
• Littrow spectrograph
• living matter
• ll-coupling
• Ll-coupling
• L long series of observations
• Lloyd's mirror
• ll-
• Ll-
• load
• loader
• loading
• load-resistance photocell
• lobe
• lobe pattern
• lobe switching
• lobe-switching principle
• lobe system
• lobe width
• local deformation
• local disturbance
• local electric field
• local errors
• local figuring
• local geomagnetic time
• local group
• local hydrogen
• localize
• localized disturbance
• localized source
• local level
• local magnetic field
• local mean solar time
• local oscillator
• local reference system
• local seeing
• local seeing effects
• local sidereal time
• local standard of rest
• local stars
• local star system
• local structure of neutral hydrogen
• local supercluster
• local system
• local system of hydrogen
• local temperature
• local thermodynamical equilibrium
• local thermodynamic equilibrium
• local time
• locate
• location
• Lommel-Seeliger law
• Lomonosov telescope
• long-base interferometer
• long baseline
• long-base-line interferometer
• long baseline observations
• long exposure photograph
• long-focus
• long-focus collimator
• long-focus lens
• long-focus objective
• long-focus refractor
• long-focus telescope
• longitude
• longitude distribution
• longitude of ascending node
• longitude of perihelion
• longitude of the ascending node
• longitude system
• longitudinal
• longitudinal magnetic field
• longitudinal motion of sunspots
• longitudinal plasma waves
• longitudinal vibrations
• long-lived feature
• long-lived spot
• long period comet
• long-period perturbation
• long-period variables
• long range studies
• longward
• long-wave end
• long-wave radiation
• loop
• loop prominence
• loop-type prominence
• Lorentz theory of pressure broadening
• Lorentz theory of Zeeman effect
• Lorentz transformation
• Lorentz unit
• Lorentz-Weisskopf broadening
• loss
• loss cone
• loss-less compression
• loss tangent
• lossy compression
• Lovell telescope
• low-coefficient glass
• low-dispersion spectrogram
• Lowell observatory
• low-energy component
• low-energy particles
• low-energy radiation
• lower atmosphere
• lower chromosphere
• lower conjunction
• lower corona
• lower culmination
• lower end of tube
• lower level
• lower transit
• low-expansion glass
• low-frequency channel
• low-frequency spectrograph
• low-latitude
• low-latitude prominence
• low-latitude station
• low-luminosity star
• low-noise amplifier
• low-noise radiometer
• low-noise receiver
• low pass filter
• low-power objective
• low-power telescope
• low-pressure light source
• low resolution
• low-resolution survey
• low-speed electrons
•