Surface of the sun

pho·to·sphere (f

-sfîr

)

The visible outer layer of a star, especially of the sun.

photo·spheric (-sfîr

k, -sf

k) adj.

photosphere [ˈfəʊtəʊˌsfɪə]

(Astronomy) the visible surface of the sun, several hundred kilometres thick

photospheric [ˌfəʊtəʊˈsfɛrɪk] adj

photosphere (f

-sfîr

)

The lowest visible layer of a star, lying beneath the chromosphere and the corona. Stars are made entirely of gas and thus have no surface per se, but the gas beneath the photosphere is opaque, so the photosphere acts as their effective visible surface; it is also the boundary from which the Sun's diameter is measured. The Sun's photosphere is a very thin layer made up of numerous granules (transient convective cells) where hot gases rise and give off light and heat. The photosphere of the Sun has a temperature of around 6,000°K and is the region in which sunspot activity is located.

ThesaurusLegend: Synonyms Related Words Antonyms

Noun

photosphere - the intensely luminous surface of a star (especially the sun)

surface - the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface"

Sun - the star that is the source of light and heat for the planets in the solar system; "the sun contains 99.85% of the mass in the solar system"; "the Earth revolves around the Sun"

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astronomy chromosphere Chromospheric convection zone dapple eclipse facula Faculae fleck granulation granule layer macula maculation patch speckle spot sun sunspot	So unless you''re planning on reading your booklet on the surface of the sun, you''ll never have to worry about the cover melting on you. The Finishing Touch - Plastic Binding Covers by Jeff McRitchie / Business community s Northern Lights are naturally occurring phenomena which happen as a result of gas produced by solar activity on the surface of the sun. FAQ?s on Iceland?s Northern Lights by Darshi Chohan / Travel, recreation and leisure community s sunspots became less common over the last few years, large coronal holes lingered in the surface of the Sun near its equator. Quiet Sun bombards earth with fierce solar streams by Asian News International	surf zone surface surface acoustic wave surface action group surface analgesia surface area surface assimilation surface chemistry surface code surface combatant Surface condensation surface condenser surface fire surface friction drag surface gage surface gauge Surface grub surface lift Surface loading surface mail surface mine surface noise Surface of elasticity Surface of flotation surface of revolution Surface of the sun surface plate Surface printing surface runoff surface search radar surface ship surface smuggling event surface soil surface structure surface tension surface warfare surface wave surface zero surface-active surface-active agent surface-air surface-assimilative surface-effect ship surface-mine surface-to-air surface-to-air guided missile surface-to-air missile surface-to-air missile envelope surface-to-air missile installation surface-to-air missile site surface-to-air missile system	Surface Movement Radar Surface Movement Report Surface Mucous Gel Layer surface navigation Surface Navy Association Surface Network Embedded Analysis and Tactical Trainer surface noise surface noise Surface normal Surface normals Surface Nuclear Burst Surface Nuclear Magnetic Resonance Surface Ocean Lower Atmosphere Study surface of center surface of denture foundation surface of denture foundation surface of denture foundation surface of discontinuity Surface of elasticity Surface of flotation surface of Joachimsthal surface of Liouville surface of Monge surface of negative curvature surface of positive curvature surface of revolution surface of revolution surface of section Surface of the sun surface of translation surface of Voss surface of zero curvature surface oil-film technique Surface Operation Research and Evaluation Vehicle Surface Operator Surface Orientation Surface Orientation surface osteocyte surface osteocyte surface osteocyte Surface Overflow Rate surface passivation surface patch Surface Periodic Poling in Lithium Niobate Surface Permanent Magnet surface phase Surface Phenomena Surface Photometry Interactive Reduction and Analysis Library Surface photovoltage Surface Photovoltage Spectroscopy Surface physics Surface Picture surface pipe Surface planer Surface planer Surface Planing Wet Submersible Surface Plasma Source

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