Definitions for chromosphereˈkroʊ məˌsfɪər

This page provides all possible meanings and translations of the word chromosphere

Random House Webster's College Dictionary

chro•mo•sphereˈkroʊ məˌsfɪər(n.)

  1. a gaseous envelope surrounding the sun from which hydrogen and other gases erupt.

    Category: Astronomy

  2. a gaseous envelope surrounding a star.

    Category: Astronomy

Origin of chromosphere:

1865–70

chro`mo•spher′ic-ˈsfɛr ɪk, -ˈsfɪər-(adj.)

Princeton's WordNet

  1. chromosphere(noun)

    a gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun

Wiktionary

  1. chromosphere(Noun)

    The faint pink extension of a star's atmospheric envelope between the corona and the photosphere

Webster Dictionary

  1. Chromosphere(noun)

    an atmosphere of rare matter, composed principally of incandescent hydrogen gas, surrounding the sun and enveloping the photosphere. Portions of the chromosphere are here and there thrown up into enormous tongues of flame

Freebase

  1. Chromosphere

    The chromosphere is the second of the three main layers in the Sun's atmosphere and is roughly 2,000 kilometers deep. It sits just above the photosphere and just below the solar transition region. The density of the chromosphere is very small, it being only 10−4 times that of the photosphere, the layer just below it, and 10−8 times that of the atmosphere of Earth. This makes the chromosphere normally invisible and it can only be seen during a total eclipse, where its reddish color is revealed. The color hues are anywhere between pink and red. However, without special equipment, the chromosphere cannot normally be seen due to the overwhelming brightness of the photosphere. The density of the chromosphere decreases with distance from the center of the sun. This decreases logarithmically from 1017 particles per cubic centimeter, or approximately 2×10^−4 kg/m³ to under 1.6×10^−11 kg/m³ at the outer boundary. The temperature begins to decrease from the inner boundary of about 6,000 K to a minimum of approximately 3,800 K, before increasing to upwards of 35,000 K at the outer boundary with the transition layer of the corona. Figure 1 shows the trends which density and temperature follow through the chromosphere.

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