Photosphere definition7/29/2023 The edge of the atmosphere is also measured in degrees. The temperature of the photosphere is 5,780 degrees as compared to the temperature of the inside of the sun. It is the most visible surface of the sun. It consists of super-granules and large scale flows as well as patterns of waves and oscillations. The features of the photosphere are mentioned below:-īy the Doppler effect, we can measure the material of the flow in the photosphere. "Photosphere is the visible surface of the sun, several hundred kilometres thick or a sphere of light or radiance or the luminous visible surface of the sun, being a shallow layer of strongly ionized gases." - Collins Dictionary "Photosphere is a sphere of light or radiance or the luminous surface layer of the sun or a star." - Merriam-Webster Some of the standard definitions are given below: It is because of the absorption of the strong light by the hydrogen ions. The density of the ionized gas is the same as air at the earth's surface. This cannot get out without any absorption and remission. In this layer, photons that are generated are deeper. The temperature in the photosphere ranges from 4,100 ☌ or 7,400 ☏ at the top to 9,700 ☌ or 17,500 ☏. The sun has so many gases composed of ionized atoms. But it is in the plasma state, that is a gas. But the sun has no surface because it is too hot to be a matter in it. The sun is so distant from the earth as the edge of the photosphere appears sharp to the naked eye. It is the part from where the sun's light reaches directly to the Earth. Because of the distance between the earth and the sun, the light of the sun reaches the earth in eight minutes. This is the layer of the sun from which most of the light of the sun comes out. At this layer, the energy of the sun is released in the form of light. The thickness of the photosphere is 500 kilometres. It is flowing at a velocity of 7 km/second. Granules are cells of plasma that are 1000 km in diameter with hot rising plasma in the centre and the cooler plasma laying in the narrow spaces between them. It is composed of convection cells which are called granules. It is the deepest region of the luminous object. The term photosphere derived from the ancient Greek roots, photos means "light" and sphaira means "sphere" which refers to being a spherical surface. The lowest layer of the sun is the photosphere. So, the photosphere acts as their effective visible surface. In the universe, the stars have no gases but the gas beneath the photosphere is opaque. It is located under the chromosphere and the corona. The lowest visible layer of a star is the photosphere. The photosphere is the external layer of the Sun which is known as the luminous envelope or the visible layer of the sun from which light as well as heat radiate. Out of these, we talk about the main photosphere which is the outer layer of the earth. The inner layer of the sun is the core, radiative zone and convection zone while the photosphere, the chromosphere, the transition region and the corona are the outer layers of the sun. The atmosphere of the sun is composed of different layers and gases. This topic is very much essential in the fields of Astronomy, Geography, and Earth Science. We will learn what is the photosphere, its definition, its features and other related aspects as well. In this article, we will cover one of these layers i.e. Different ranges of temperature can be observed in these layers which have their own significance. It has a different structure consisting of Internal and external structure. Hydrogen and Helium are the two most elements of its composition. The Sun is considered as the centre of our solar system which also consists of planets, satellites, etc.
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