The red rim can be seen when this H-alpha burns at a high temperature during a total solar eclipse. It is the H-alpha emission which actually gives the chromosphere its reddish colour. Its image reveals two dominant features, a darkening toward the outermost regions, called limb darkening, and a fine rice-grain-like structure called granulation. The spectrum of chromosphere has emission lines, with H-alpha lines being the strongest of emission lines. The photosphere is the portion of the Sun seen in ordinary light. The spicules are long and thin finger-like gaseous spikes which rise through the chromosphere. One of the important features of the chromosphere is the presence of spicules on its edges. Above this lies the suns thin atmosphere, which is made up of the chromosphere. The term itself is derived from Ancient Greek roots,, / phos, photos meaning 'light' and / sphaira meaning 'sphere', in reference to it being a spherical surface that is perceived to emit light. The temperature of photosphere, for instance, decreases as it moves away from the Sun. Surrounding all of them is the suns surface layer, known as the photosphere. The surface of the Sun The photosphere is a star's outer shell from which light is radiated. Experimental results on limb darkening and specific intensities imply. The temperature rises as chromosphere moves farther away from the Sun unlike other objects of the solar system. A Search for Continuous Ultraviolet Opacity Sources in the Suns Photosphere. During the total eclipse, the moon hides the photosphere and makes way for the reddish chromosphere to be seen.Ĭhromosphere’s temperature ranges from 6,000 to 20,000 degree Celsius. The chromosphere, thus, can be only seen during a complete solar eclipse. It is normally not visible because its density is very low and due to the excessive brightness of the photosphere. It is about 2,000 to 3,000 kilometres deep, which is located immediately above the photosphere and just below the corona. Out of the three layers of the Sun’s atmosphere, chromosphere is the second one (with photosphere being the first layer and corona as the third).ĭescription: As the name suggests, chromosphere literally translates into ‘sphere of light’. It is actually the transition between corona and the photosphere. But a few thousand kilometres above it - a small distance when we consider the size of the Sun - the solar atmosphere. The vast amount of heat received by the earth from the sun, at the distance of 92 millions of miles, proves that the. Definition: Chromosphere is a reddish and glowing layer of gas above a star’s (or Sun's) photosphere.
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