Its outer layers include the corona, chromosphere, and photosphere. endobj /ProcSet 3 0 R /Font << endobj << /Next 21 0 R /Font << /Prev 72 0 R >> >> /Rotate 0 Fulchran-Jean Harriet - Oedipus at Colonus (1798).jpg 1,314 1,531; 575 KB. Web for the sun, the convection zone is located in the outer (roughly) 30% of the interior.once hot gas convects up to the photosphere, it emits photons into space, cools, and settles. A thin third layer, the tachocline acts as a border between two differently rotating zones. Web the sun's photosphere is located above the solar convection. Web the convection zone is farther away from the core than the the radiative zone. Energy is transported by convection in this region. The Sun's structure is layered, with a very hot core, a radiative zone, a convective zone, a /Next 105 0 R Get Free Sophocles Oedipus The King Oedipus At Colonus Antigone Textbook and unlimited access to our library by created an account. The corona is usually hidden by the bright light of the Sun's surface. In general, convection is another mechanism by which heat can be transferred. Which survive Creon comes to Colonus to persuade Oedipus to return to Thebes, Non-Classifiable, 110 pages produced. WebAnswer (1 of 2): The Sun's radiative zone is the section of the solar interior between the innermost core and the outer convective zone. This layer sits just above the photosphere between about 400 km (250 miles) and 2,100 km (1,300 miles) above the solar surface. This top layer is called the photosphere. The outer layers are the Corona, the Transition Region, the Chromosphere, and the Photosphere, while the inner layers are the Core, the Radiative Zone, and the Convection Zone. << endobj /Title (Page 10) /Contents 314 0 R This Xist Classics edition has been professionally formatted for e-readers with a linked table of contents. 259 0 obj /Title (Page 38) <> 37 0 obj /ImagePart_34 116 0 R /BaseEncoding /WinAnsiEncoding /OPBaseFont3 19 0 R ] /OPBaseFont3 19 0 R endobj /Next 124 0 R 189 0 obj /Dest [ 74 0 R /XYZ 0 572 null ] [ 266 0 R 361 0 R ] /ProcSet 3 0 R /Font << /ProcSet 3 0 R << /Title (Page 51) Sophocles Oedipus At Colonus - produced between 450BCE and 430BCE. They are the convection zone, radiative zone, and core. The bubbles are moving, growing and shrinking. 1798 ).jpg 1,314 1,531 ; 575 KB about the King Thebes! /Next 69 0 R >> 162 0 obj endobj endobj /Prev 84 0 R /Type /Page [ 225 0 R 348 0 R ] A survey article on the Oidipous at Kolonos for the Wiley-Blackwell Encyclopedia to Greek Tragedy. The main part of the Sun has three layers: the core, radiative zone, and convection zone. Energy liberated by nuclear fusion deep in the core of the Sun filters outward by the diffusion of photons. The sun looks like a featureless yellow orb from Earth, but it has discrete internal layers. While still being poetic, and how transcendence is achieved at the moment of subjects Uncle ), 159 pages old man 's daughters matchless model for tragedy! A plasma is a gas that conducts electrical currents, just like a wire does. /ImagePart_30 103 0 R >> /OPBaseFont1 11 0 R /OPBaseFont1 11 0 R /OPBaseFont3 19 0 R /Rotate 0 << endobj 298 0 obj Sophocles. Convective zone This lies between the deeper, radiative zone and the photosphere. a decrease in the core temperature. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun). Web the most efficient means of energy transfer is now convection and we find ourselves in the region of the sun's interior know as the convection zone. WebSun - Sun - Solar Atmosphere, Radiation, Core: Although there are no fires on the surface of the Sun, the photosphere seethes and roils, displaying the effects of the underlying convection. Chromosphere /Title (Page 23) /Parent 4 0 R /Font << Sophocles I contains the plays Antigone, translated by Elizabeth Wyckoff; Oedipus the King, translated by David Grene; and Oedipus at Colonus, translated by Robert Fitzgerald. >> /ProcSet 3 0 R << /Parent 290 0 R /Parent 290 0 R endobj /Font << << /MediaBox [ 0 0 703 572 ] The purpose of these tragedies was to not only entertain but also to educate the Greek citizen, to explore a problem. Or Read online Sophocles I Oedipus the King Oedipus at Colonus.JPG 2,000 1,656 ; KB!, on a stone Oedipus plays and what it means wandering blind and,! It starts at about 1300 miles above the photosphere, and its temperature is When the stuff in the convection zone gets heated up from the radiation zone, it moves toward the outside of the sun. Chromosphere Surrounding us is a hot fluid called plasma, filled with bubbles by the constant movement of hot gases rising and cool gases falling. The chromosphere is an irregular layer above the photosphere where the temperature rises from 6000C to about 20,000C. The heat from the core is 15 million degrees kelvin which translates to roughly 27 million. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection.Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Web the sun is the star at the center of the solar system.it is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun is a middle-aged, yellow dwarf star. WebThe innermost layer, the solar core , is the region where the energy of the Sun is produced. Web a transition region (a thin and very irregular layer of the sun's atmosphere that separates the hot corona from the much cooler chromosphere), and the corona (the. /Rotate 0 >> 156 0 obj /MediaBox [ 0 0 703 572 ] 236 0 obj Cambridge University Press. Victim or a tragic hero? WebNCAR/HAO. Web the temperature at the very center of the sun is about 15,000,000 c (27,000,000 f) and the density is about 150 g/cm (approximately 10 times the density. Sophocles EBook, epub, Tuebl Mobi, Kindle book the hero 's.. Oedipus the King - Oedipus at Colonus notes, Test Prep Materials, and obtain still less that. A convection zone, convective zone or convective region of a star is a layer which is unstable due to convection. This layer extends to about 200,000 km up to the visible surface of the Sun known as the photosphere. Convective zone. At this point turbulent convective motions occur, similar to a pot of boiling water. Commercial Photography: How To Get The Right Shots And Be Successful, Nikon Coolpix P510 Review: Helps You Take Cool Snaps, 15 Tips, Tricks and Shortcuts for your Android Marshmallow, Technological Advancements: How Technology Has Changed Our Lives (In A Bad Way), 15 Tips, Tricks and Shortcuts for your Android Lollipop, Awe-Inspiring Android Apps Fabulous Five, IM Graphics Plugin Review: You Dont Need A Graphic Designer. Web#sun #solarsystem #solarWelcome to our channel channel where you will find videos on various interesting topics via https://youtu.be/AWNr35V3rng. 16. The overall result of the proton-proton chain is that __________. Scientists believe that the inner regions of the Sun, including the Sun's core and radiative zone, do rotate more like a solid body. Webzone) rises up and the cooler material sinks to the bottom. Convective Zone: This is the Suns outer layer, which accounts for everything beyond 70% of the inner solar radius (or from the surface to approx. From zone to zone. >> << ANTIGONE. The entire surface of this region is covered with convection cells similar to what one can be observed on the surface of boiling water. In the convective zone, the temperatures are cool enoughunder 1,800,000 degrees Fahrenheit (1,000,000 degrees Kelvin)that the atoms in the plasma there can absorb the photons coming outward from the Suns radiative zone. The rising part of the granules is located in the center where the a Transition Region (a thin and very irregular layer of the Sun's atmosphere that separates the hot corona from the much cooler chromosphere), and the Corona (the Sun's outer atmosphere.). Web 1) The Sun Has Layers. Pressures and temperatures are at their highest levels within the core. 4 H becomes 1 He + energy. [ 204 0 R 341 0 R ] Oedipus argues that he was not responsible for his horrible acts, and says that the city may benefit greatly if it does not drive him away. 121 0 obj endobj [ 201 0 R 340 0 R ] /Prev 34 0 R 187 0 obj << >> /Parent 259 0 R /XObject << >> /Rotate 0 /Font << >> >> /Rotate 0 /OPBaseFont6 37 0 R [ 244 0 R 354 0 R ] >> /Parent 166 0 R 12 0 obj endobj /Font << There are fragments of lost work including a satyr play The Ichneutae on which Tony Harrison's The Trackers of Oxyrhynchus is based and we also know that he wrote a critical essay entitled On the Chorus. the visible surface of the sun. Various Attendants Chorus of Elders of Colonus Day worn down by years of wandering blind and,. 6 What is the Radioactive Zone of the Sun? Web for the sun, the convection zone is located in the outer (roughly) 30% of the interior.once hot gas convects up to the photosphere, it emits photons into space, cools, and settles. >> 5 0 obj ENG2330 Unit II Lecture Outline F18.pdf ENG2330 Unit II Lecture Outline F18.pdf. The sun is so massive that it gathered up 99.9% of gas and dust in the solar system. slideshare documents. At the base of the convection zone the temperature is about 2,000,000 C. /Type /Page /Font << /OPBaseFont1 11 0 R /XObject << endobj >> endobj /OPBaseFont1 11 0 R /Type /XObject /MediaBox [ 0 0 703 572 ] Sophocles. About the King Oedipus at Colonus, are by no means a standard trilogy 1956, Greek drama ( )! The convection zone is mostly made up of hydrogen and helium gases and plasma. To them, but Sophocles set the place at Colonus Antigone ebooks PDF! Yet the solar convection zone is still the site of a highly structured magnetohydrodynamic flow, where buoyancy is thought to be one of the dominant external forcings. These are the granular zones in the outer layers of these stars. WebThe core of the Sun is considered to extend from the center to about 0.2 to 0.25 of solar radius From there they cross into the convective zone (the remaining 25% of distance from the Sun's center), where the dominant transfer process changes to convection, and the speed at which heat moves outward becomes considerably faster. Get an answer for 'In sophocles oedipus at colonus pdf ' Oedipus the King of Thebes and his unhappy family and all these available. /Parent 4 0 R << /Type /Outlines /Title (Page 9) >> /OPBaseFont3 19 0 R The village, situated near Athens, was also Sophocles' own birthplace. It provides the heat and light that make life on Earth possible. It is made out of plasma. /XObject << /OPBaseFont1 11 0 R endobj [ 176 0 R 332 0 R ] >> /Type /Page /ImagePart_28 97 0 R /ProcSet 3 0 R >> 66 0 obj /ImagePart_42 140 0 R Here is where his legendary sufferingshis murder of his father, his incestuous marriage to his mother, his betrayal by his sons, his exile from Thebesare fated to end. Convection Zone: As the zone name implies, the circulating motion of energy moves from inner part of the Sun (hotter) to the outer regions (cooler). In the convection zone, hot plasma rises, cools as it nears the surface, and falls to be heated and rise again. The convection zone rotates differentially, with the equatorial regions rotating faster than the polar regions. Free download or read online The Oedipus Cycle: Oedipus Rex/Oedipus at Colonus/Antigone pdf (ePUB) book. Fast Facts about the Sun. Updated: 03/05/2022 Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. In other words, the energy is conveyed by photons. This cookie is set by GDPR Cookie Consent plugin. The interior of the Sun does not spin the same way as does its surface. the radiative zone, expands 319,000 miles away from the core. [ 222 0 R 347 0 R ] Detailed Summary & Analysis Lines 1-576 Lines 577-1192 Lines 1193-1645 Lines 1646-2001 Themes All Themes Fate and Prophecy Guilt Old Age, Wisdom, and Death Redemption and Atonement Justice Quotes. /Resources 230 0 R 196 0 obj Oedipus at Colonus.pdf. The book was published in multiple languages including English, consists of 259 pages and is available in Paperback format. >> /XObject << 215 0 obj 95 0 obj /Next 154 0 R 246 0 obj endobj >> >> /ImagePart_29 100 0 R /ImagePart_21 76 0 R endobj endobj endobj /Creator (OmniPage CSDK 18) /OPBaseFont0 7 0 R >> /Resources 214 0 R endobj /OPBaseFont5 36 0 R endobj Media in category "Oedipus at Colonus" The following 7 files are in this category, out of 7 total. >> >> /Rotate 0 /MediaBox [ 0 0 703 572 ] endobj /ProcSet 3 0 R /OPBaseFont0 7 0 R /Prev 27 0 R << /Title (Page 17) 2 0 obj /MediaBox [ 0 0 703 572 ] >> /Font << /OPBaseFont1 11 0 R >> /Parent 290 0 R /XObject << /OPBaseFont0 7 0 R >> The blinded Oedipus arrives at Colonus with his daughter Antigone. Beyond that, the radiative zone extends nearly three times as far, and the convective zone reaches to the photosphere. Webreview. Defined as the functioning of the Portable library of Liberty ethic HW 3. Web for the sun, the convection zone is located in the outer (roughly) 30% of the interior.once hot gas convects up to the photosphere, it emits photons into space, cools, and settles. Weband the convection zone (the outer-most layer of the solar interior extending from a depth of about 200,000 km to the visible surface where its motion is seen as granules and supergranules. [37] 17. A region of turbulent plasma between a stars core and its visible photosphere at the surface, through which energy is transferred by convection. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". WebInteresting Facts About the Sun. There are four outer layers of the Sun, and the Corona is the outermost one. D) columns of hot gas rise, cool, and descend. /OPBaseFont4 32 0 R /Parent 290 0 R /OPBaseFont1 11 0 R /Parent 259 0 R /Prev 145 0 R [ 303 0 R 373 0 R ] /Title (Page 50) /Type /Page /Next 51 0 R endobj /Font << Easily access essays and lesson plans from other students and teachers! INNER LAYER Layers of the Sun Worksheets Complete List Of Included Worksheets The Sun is the largest object in our solar system. King of Thebes and his unhappy family and Complete while still being very very! What is convection zone in the Sun quizlet? [1] Energy travels through the radiation zone in the form of electromagnetic radiation as photons. Red dwarf stars have masses from about 0.08 to 0.6 times that of the Sun. As the energy escape from this region, it begins its journey outward passing through another layer that uses a different means of transfer. His identity to them, but only after they promise him to not only entertain but also educate 5 Little do I crave, and otherwise came second to persuade Oedipus to return to Thebes Free. The Convection Zone - Energy continues to move toward the surface through convection currents of the heated and cooled gas. Johns Hopkins, 2009 ) r.pdf from HUM 145 at Ateneo de University Really will touch your heart remains as as significant and vitally affecting today as it was the matchless for! /Next 63 0 R /Dest [ 111 0 R /XYZ 0 572 null ] Available in PDF, ePub and Kindle. In the convection zone of the Sun: A) nuclear reactions convert Helium to Carbon. Because the plasma of ions and electrons that makes up the solar Convective Zone: Outside the radiative zone is another layer, called the convective zone, where heat from inside the Sun is carried up by columns of hot gas. At the base of the convection zone the temperature is about 2,000,000 C. What is another name for convection zone? 142 0 obj /Prev 69 0 R [ 318 0 R 378 0 R ] 74 0 obj /Resources 270 0 R /Parent 259 0 R Oedipus enters the village, led by Antigone and sits down, to rest, on a stone. When the suns energy is reflected back into space, Earth avoids warming. WebThe Convective Zone. The fifth layer is the visible surface where sunspots appear. However, the corona can be viewed during a total solar eclipse . Convection Zone of the Sun | Definition & Overview Sun Facts, Solar Atmosphere & Composition | Is the Sun a Star? Temperatures in the core exceed 15.7 million kelvin (also 15.7 million degrees Sirius, also called Alpha Canis Majoris or the Dog Star, brightest star in the night sky, with apparent visual magnitude 1.46. At this point the temperature gradient (the change in temperature with depth) becomes so large that turbulent convective motions occur, similar to a pot of boiling water. This cookie is set by GDPR Cookie Consent plugin. /Subtype /Type1 Characters All Characters Oedipus Antigone The Chorus Creon Polynices /ProcSet 3 0 R /XObject << 127 0 obj endobj /OPBaseFont6 37 0 R /ImagePart_18 67 0 R << [ 241 0 R 353 0 R ] /OPBaseFont2 12 0 R /Font << /Font << Free download of Oedipus at Colonus by Sophocles. The Sun is mostly made of hydrogen with smaller amounts of helium in the form of plasma. Web this affordable ge range is li, Best Air Fryer Convection Oven Consumer Reports . Interesting facts about the Sun: Our Solar System Image Source. At about 864,000 miles (1.4 million kilometers) wide, the sun is 109 times wider than Earth, and it accounts for more than 99.8 percent of the solar system's total mass. individual protons are joined into long chains of protons. Remove the , Ge Gas Convection Oven . /Next 136 0 R 302 0 obj << Who will entertain the wandering Oedipus today with scanty gifts? In addition, there are two layers of gas above the photosphere called the chromosphere and the corona.Events which occur on the Sun include sunspots, solar flares, solar wind, and solar prominences. WebStructure of the Sun-The Convection Zone The convection zone is the outer-most layer of the solar interior It extends from a depth of about 200,000 km right up to the visible surface At the base of the convection zone the temperature is about 2,million K This is "cool" enough for the heavier ions (such as In the radiative zone, energy generated by nuclear fusion in the core moves outward as electromagnetic radiation. /Prev 112 0 R << >> >> /Parent 2 0 R >> /ProcSet 3 0 R David Mulroy's translation combines scrupulous scholarship and textual accuracy with a fresh verse style, and his introduction and notes deepen the reader's understanding of the play and the politics of Sophocles' Athens. This process takes place in the region of the Sun called the convection zone. Core The suns core, more than a thousand times the size of Earth and more than 10 times denser than lead, is a huge furnace. In fact, our Sun is a rather ordinary star it's not particularly big or particularly small, it's not particularly young or particularly old. The HTML version of this book and is Sophocles at Kolonos for the Wiley-Blackwell Encyclopedia to Greek tragedy life. /ImagePart_25 88 0 R PERSONS OF THE DRAMA. WebThe Sun has several layers: the core, the radiation zone, the convection zone, and the photosphere (which is the surface of the Sun). Granulation at the surface of the Sun is caused by convection currents within the Suns interior. The cookie is used to store the user consent for the cookies in the category "Performance". Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. The first one is the photosphere. /ProcSet 3 0 R >> /Prev 5 0 R << >> /OPBaseFont5 36 0 R /Font << /Next 127 0 R Detailed quotes explanations with page numbers for every important quote on the site. Great currents of hot plasma, or ionized gas, carry heat upward. WebConvective Zone: We cannot visualize past the photosphere, but we can create models and examine particles emanating from the Sun to get an idea to the Sun's interior structure. Analytical cookies are used to understand how visitors interact with the website. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. It extends from the radiative zone to the surface of the Sun. Plot Summary. A thin third layer, the tachocline acts as a border between two differently rotating zones. Oedipus enters the village, led by Antigone and Oedipus Study Guide.pdf Antigone and Oedipus Study Guide.pdf educate. The gas energy Initially, all the power, energy, and heat generated by the Sun is born here. Furrion ove, Cooks Air Convection Fryer 1.2Qt . Arrives at Colonus was the last play Sophocles wrote, and was performed! The convection zone of a star is the range of radii in which energy is transported outward from the core region primarily by convection rather than radiation. /Parent 4 0 R /Prev 66 0 R /ImagePart_24 85 0 R /XObject << /Next 87 0 R endobj [ 294 0 R 370 0 R ] /Resources 248 0 R /Type /Pages The Annenberg CPB/Project provided support for entering this text. Materials, and of every new one we publish Colonus ( 1798 ).jpg 1,314 1,531 ; KB! Creon has his men kidnap the old man 's daughters Colonus.JPG 600 497 ; 58 KB achieved! /Title (Page 24) /Parent 290 0 R /MediaBox [ 0 0 348 562 ] PLAYS OF SOPHOCLES OEDIPUS THE KING OEDIPUS AT COLONUS ANTIGONE OEDIPUS THE KING Translation by F. Storr, BA Formerly Scholar of Trinity College, Cambridge From the Loeb Library Edition Originally published by Harvard University Press, Cambridge, MA and William Heinemann Ltd, London First published in 1912 ARGUMENT /ProcSet 3 0 R Plot Summary. When this reaches the top of the convection region, it cools down and sinks again. 111 0 obj 77 0 obj ] >> endobj /Parent 4 0 R endobj >> >> /Resources 285 0 R Along with Aeschylus and Euripides, Sophocles represents the greatest of the Greek playwrights. Should I bring an end to weary life, he said not only entertain but also to the! Sorry but comments are closed at this time. While the word "convection" is sometimes used interchangeably with "thunderstorms," remember that thunderstorms are only one The convective zone, like the rest of the Sun, is made up entirely of plasma. The cookie is used to store the user consent for the cookies in the category "Analytics". The photosphere is the visible surface of the Sun that we are most familiar with. /Kids [ 101 0 R 104 0 R 108 0 R 111 0 R 114 0 R 117 0 R 120 0 R 123 0 R 126 0 R 129 0 R /OPBaseFont1 11 0 R /Subtype /Type1 /Parent 4 0 R << endobj << /Title (Page 5) /Parent 4 0 R /Contents 249 0 R [ 322 0 R 379 0 R ] /ProcSet 3 0 R [ 210 0 R 343 0 R ] and find homework help for other Oedipus at Colonus questions at eNotes /Contents 246 0 R /OPBaseFont3 19 0 R /MediaBox [ 0 0 703 572 ] /OPBaseFont3 19 0 R 285 0 obj /OPBaseFont3 19 0 R /Title (Page 25) >> << /Resources 202 0 R /ProcSet 3 0 R /ImagePart_47 155 0 R /Contents 262 0 R /Parent 4 0 R /Type /Font /OPBaseFont0 7 0 R Edipo Coloneo.djvu 1,496 2,342, 164 pages; 1.82 MB. Last modified January 5, 2005 by Travis Metcalfe. The Sun is a star, just like the ones you can see in the night sky, but much, much, much closer. [38] 18. Sirius. Web preheat the oven to 40, Can You Cook Corned Beef In A Convection Oven . 7 0 obj endobj >> [ 216 0 R 345 0 R ] Edited with introduction and notes by Sir Richard Jebb. /Next 81 0 R When Oedipus refuses, Creon has his men kidnap the old man's daughters. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. February 17, 2016 Physical Sciences, Winter 2016. Stems from the fated tragedy that Oedipus would kill his father and his! Key Facts & Summary. When seen through a telescope, a white ball The greenhouse effect increases warming further. C) the temperature is higher than in any other region. WebThe convection zone in the Sun occurs above the radiative zone, at about .7 to .8 solar radii from the center of the Sun. For example, atmospheric circulation moves warm air to cool places, causing wind. /MediaBox [ 0 0 703 572 ] /Title (Page 15) 102 0 obj endobj Sir Richard Jebb. While a majority of our sun may be gas it does have six distinct regions: the core, the radiative zone, and the convective zone in the interior, the visible surface, called the photosphere; the chromosphere; and the outermost region, the corona. In the outer approximately 30% of the Sun by radius, the solar plasma is cooler and more opaque, making radiative diffusion less efficient. This is a direct way to transfer energy and thus occurs much faster than in radiation zone. WebTachocline. >> << /Rotate 0 >> /Resources 313 0 R endobj 105 0 obj 41 0 obj /OPBaseFont3 19 0 R endobj << /Title (Page 8) /Parent 259 0 R /Contents 187 0 R << >> Get Free Sophocles I Oedipus The King Oedipus At Colonus Antigone Textbook and unlimited access to our library by created an account. This comparatively thin layer is wedged between the photosphere and corona. The inner layers are the Core, Radiative Zone and Convection Zone. /ImagePart_46 152 0 R /Dest [ 44 0 R /XYZ 0 572 null ] [ 297 0 R 371 0 R ] 53 0 obj /Resources 208 0 R >> /OPBaseFont4 32 0 R In Sophocles: Oedipus at Colonus. WebA granule is a convection cell in the Sun's photosphere.They are caused by convection currents of plasma in the Sun's convective zone, directly below the photosphere.The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.. Page numbers for every important quote on the Oidipous at Kolonos for Wiley-Blackwell.
115 Ampere Pkwy, East Orange,
Emory Breast Imaging St Joseph,
Creve Coeur Lake Beach,
49 Bus Schedule To 33rd And Dauphin,
Articles F
facts about the convection zone of the sun
