By Joseph Kiprop on September 18 2017 in Environment. Uploaded By tb06158887. Outer layers of the Sun Photosphere - The photosphere is the deepest layer of the Sun that we can observe directly. 2012-01-28 09:59:32 2012-01-28 09:59:32 . This can disrupt radio, satellite, and electrical transmissions, and may cause power outages. We term the region where this happens the apparent surface, or the photosphere. School American Public University; Course Title POLS210 1; Type. This energy is what we see as sunlight. Photosphere: about 5800K, although sunspots are about 3800 K - that's why they are dark. eval(ez_write_tag([[250,250],'planetsforkids_org-medrectangle-4','ezslot_4',198,'0','0'])); The energy then reaches the sun’s surface, and spreads out through the atmosphere of the sun. This layer is where the sun's energy is released as light. Hydrogen atoms in this region get compressed, and they fuse together to produce helium in a process referred to as nuclear fusion. One of the magnetic field lines is looping, and it is "crossing itself". The temperature at this layer is approximately 3.5 million degrees fahrenheit (2 million degrees celsius). The temperature in the photosphere varies between about 6500 K at the bottom and 4000 K at the top (11,000 and 6700 degrees F, 6200 and 3700 degrees C). The darker boundaries of the granulation "cells" are places where the plasma has cooled and is sinking back down into the Sun's interior. How Hot Is the Sun? Shares. The top of the crust is the surface of the Earth. "I will address these questions in reverse order. Nonetheless, when we look at the Sun there is a depth past which the gas begins to get so dense that we can not see through it. These different gases all exhibited vortex behaviour as aligned with the same spot on the photosphere. Think of a piece of hot, glowing charcoal...where does the emitted ... above, the photosphere is opaque, but not totally opaque. Radiative Zone: Temperature falls from about 7 million to about 2 million K across this zone. More than 40,000 subscribers can't be wrong. Notes. This produces a dramatic drop in temperature and density. The temperature rises from the surface of the Sun inward towards the very hot center of the Sun where it reaches about 27,000,000 Fahrenheit (15,000,000 Celsius). This preview shows page 4 - 11 out of 17 pages. This is as expected, because normally heat passes outwardly from hot to cold. This causes granulation patterns on the suns School University of Virginia; Course Title ASTR 1220; Type . When we look at the center of the disk of the Sun we look straight in and see somewhat hotter and brighter regions. Temperature at photosphere is around 5800 K (deduct 273 from it get the celsius temperature). Why Are Places At Or Near The Equator Very Hot. As it cools off, losing both radiation and heat, matter is blown off in the form of solar wind. The sun has no crust. The exact place the photosphere begins is difficult to measure, because the Sun doesn't have a clear surface -- the Sun's particles just get less and less dense gradually until you're in space. We can actually spot the yellow aura of the sun's Photosphere here from earth. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that. The corona can get surprisingly hot, comparable to the body of the sun. In order to tackle the problem of the super-hot corona, the researchers focused their attention on the chromosphere. We’ve got a mystery on our hands. Sunspots are dark spots that can be seen on the photosphere. They measured the motion of various elements in the Sun’s atmosphere i.e.e iron, calcium, and helium through the Doppler effect. Although a great ally, we have to keep our distance, because things get pretty hot up there. Perhaps someone can explain to me why a Michelson Interferometer is the device required to 'see' visible light, from space? The photosphere of the Sun is like the crust of the Earth in some ways. The sun is in the centre of our solar system, and is a large sphere of gas that produces energy and light. The whole range of ionization of an atom can be found: for example, oxygen I (neutral) is found in the photosphere, oxygen II through VI (one to five electrons removed) in the chromosphere, and oxygen VII and VIII in the corona. The core of the Sun is considered to extend from the center to about 0.2 to 0.25 of solar radius. Photons flowing from below, trapped by the underlying layers, finally escape. photosphere (foh-tŏ-sfeer) The ‘visible’ surface of the Sun and source of the absorption spectrum that is characteristic of most stars. The "optical" surface of the Sun (known as the photosphere) is known to have a temperature of approximately 6,000 K. 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