![]() The rise of temperature with the height in the solar atmosphere is surprisingly unusual phenomena. Temperature of this layer varies in the range of ~6000 - 20,000 K. The name "Chromosphere" is taken from multi-color appearance (chromo is the Greek word for color) seen during the solar eclipses. The Chromosphere is understood to be a region of thickness of ~1000 km, just above the photosphere. The temperature of the photosphere is ~5700 K. Such shape is termed as granules based on the underlying physical process, known as granulation. Although photopshere appear to have a perfectly smooth surface, however, high resolution observations of the solar photosphere (as shown in the figure above) are grainy. However during the solar eclipses, the chrompshere and corona can be seen. It is so illuminated that the visibility of the other layers of the solar atmosphere is usually restrained. The photosphere is the visible solar disk (photos -> light).
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