]> accretion adaption Usually a mailing address adjustment aeronomy afterglow age air airglow dayglow nightglow air pollution almanac amplitude analysis angular diameter apparent diameter angular radius apparent radius angular separation angular distance anisotropy annual equation anomaly antinode arc array processor An article in a Journal. astronomical geodesy Using astronomical objects to determine locations on the Earth atlas chart atmosphere atmospheric density atmospheric radiation sky radiation atmospheric tide atomic time aurora auroral arc auroral jet One who writes a publication, ie something published. auto-correlation autocorrelation autumnal equinox axial ratio axis azimuth bearing background background noise basin Besselian epoch biology birth rate blinking Not an a physical instance of a book, but the set of books of a given title and author. bridge brightness brightness distribution bubble calendar capture catalog catalogues UK catastrophe theory center civil time classification cloud clumping clustering coating collapse collision color equation color index color vision comparison component computer computer application computer model computer program computer simulation computing constant continent continental drift contour map contraction contrast coordinated Universal Time UTC core corpuscular emission correction correlation cosmic year counting count coupling Thing made or built by a Person This holds information about the act of a creation. The Creation class is about the created thing. cross-correlation cross correlation crust crustal dynamics cycle dark adaption retinal adaption darkness data analysis database data base data center data processing data reduction data retrieval data storage decay oscillation deconvolution defect deformation design destruction detection determination diagram diameter diamond ring effect differential equation diffuse radiation discoloration discovery disintegration disk disruption distance distortion distribution function distribution in space diurnal phenomena diurnal variation D layer D region dust storm earthquake Earth sciences Earthshine edge effect e-folding time ejection E layer E region encounter engineering enrichment a very large division of geologic time usually longer than an era epoch equation equator equatorial zone equator position equilibrium equinox equinox correction ergosphere erosion error error analysis evolution exosphere expansion explosion extraterrestrial intelligence extraterrestrial life fast Fourier transform FFT fibrill filter fine analysis a highly constrained adjustment of the parameters of a theory to make it work. flow fluctuation forecasts formation Fourier analysis harmonic analysis Fourier component Fourier transform fragment fragmentation frequency frequency analysis frequency distribution frequency shift frequency standard function funneling gas geodesy the scientific discipline that deals with the measurement and representation of the Earth, including its gravity field, in a three-dimensional time varying space. geoid The geoid is that equipotential surface which would coincide exactly with the mean ocean surface of the Earth, if the oceans were to be extended through the continents. geology geomagnetic field geomagnetism geophysics terrestrial physics glaciology glass glitch grading function illumination function granulation graph graticule greenhouse effect Gregorian calendar grid halation halo HD curve Plots of film density (log of opacity) versus the log of exposure are called characteristic curves, Hurter–Driffield curves, height elevation heliocentric Julian Date HJD H.J.D. high-state history historical background horizon identification illumination image processing image reconstruction inertial coordinate system inhomogenity instability interaction interior invention A concept with an inventor or a group of inventors, possibly the human race, as in fire. A product of the imagination ionosphere isotropy Julian calendar Julian Date JD J.D. Julian epoch latitude latitude determination latitude variation life light pollution light year line identification line of sight gas lithosphere location Location is meant here to be more general than position. It includes indirect references to position, like an address or PO Box, or location in memory. Position is a direct spation location like (x,y,z) or l,b. location behind location between location in front longitude loop low-state lunar laser ranging magnetic anomaly magnetic disturbance magnetic storm magnetospheric substorm major axis mantle map mascon mass exchange exchange of mass mass flow mass-ratio mass ratio mathematical analysis mathematical model mathematics Maunder minimum maximum maximum entropy method mean equinox mean solar time measurement mechanical property Location in Memory. Usually a hex number. merger meridian mesopause mesosphere meteorology metonic cycle microprocessor microturbulence mineral deposit mineralogy minimum minor axis model modulation Monte Carlo technique morphology mottle nadir nautical almanac neighborhood night vision noctilucent cloud noise nomenclature non-thermal particle nonthermal particle northern hemisphere numerical analysis numerical integration numerical method numerical simulation oceanography ocean tide on-line system on line system orientation origin outdated belief outgassing ozone layer paleomagnetism parallel computer particle escape particle propagation period period change period variation period determination peripheral perturbation perturbation theory petrology phase angle phase defect phase difference phase effect phase error phase function phase rotator phase shift phase-shift phase wave pitch angle planetarium plasmapause pointing accuracy pointing error polar axis polar cap polar diagram polar motion polar orbit polar region polar tide pollution position precision prediction principle belief profile progenitor precursors propagation Purkinje effect The Purkinje effect (sometimes called the Purkinje shift, or dark adaptation) is the tendency for the peak sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels. quadrature RAID array rapid oscillation ratio ray reasoning process reduction method regression of node relaxation time research reseaux residual intensity ring sampling scale height scientific field search for extraterrestrial life SETI season seasonal phenomena seismology selection effect selective absorption selenology semimajor axis semi-major axis semiminor axis semi-minor axis separation set shell sidereal time S.T. signal analysis signal detection signal processing signal-to-noise ratio SNR signal to noise ratio simulation sky gas solstice southern hemisphere space debris debris space exploration space geodesy space law space motion space pollution space probe probe spherical coordinate angular coordinate SPH simulation smoothed-particle hydrodynamics SPH stability standard candle standard epoch statistical relation statistics stratopause stratosphere structure summer solstice sunlight support system surface property survey symbol system syzygy tail taxonomy temperature zone terrestrial radiation testing theory thermal history thermosphere thickness tide time time standard topography torus trajectory transition region tropical year Tropic of Cancer Tropic of Capricorn tropopause troposphere turbidity turbulence Earth atmosphere turbulence star atmosphere twilight two-color diagram two color diagram unit Universal Time U.T. UT unsharp masking upper atmosphere URL UT1 variability ventilation vernal equinox virtual observatory vision visual acuity volcano window winter solstice year zenith zenith distance zenith hourly rate zero point Inventions inventedBy someone What you would label the forward arrow between fromItem and toItem Page in Journal or Book where it starts. terrestrial atmosphere Earth atmosphere