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| The arrangement of electromagnetic radiation according to wavelength. |
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| A small packet of light energy. |
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| The study of the properties of light that depend on wavelength. |
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| An uninterrupted band of light emitted by an incandescent solid,liquid,or gas under pressure. |
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| A continous spectrum produced when white light is passed through a cool gas under low pressure; The gas absorbs slected wavelengths of light, and the spectrum looks like it has dark lines superimposed. |
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| A series of bright lines of particular wavelengths produced by a hot gas under low pressure. |
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| The apparent change in frequency of electromagnetic or sound waves caused by the relative motions of the source and the observer. |
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| A telescope that uses a lens to bend and concentrate the light from distant objects. |
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| The property of a lens whereby light of different colors is focused at different places. |
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| A telescope that has a lens to bend and concentrate the light from distant objects. |
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| A telescope designed to make observations in radio wavelengths. |
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| The region of the sun that radiates energy to space; visible surface of the sun. |
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| The first layer of the solar atmosphere found directly above the photosphere. |
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| The outer weak layer of the solar atmosphere. |
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| Streams of protons and electrons ejected at high speed from the solar corona. |
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| A dark spot on the sun, which is cool by contrast to the surrounding photosphere. |
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| A concentration of gases above the solar surface that appears as a bright archlike structure. |
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| A sudden and tremendous eruption in the solar chromosphere. |
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| A bright display of ever-changing light caused by solar radiation interacting with the upper atmosphere in the region of the poles. |
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| The way in which the sun produces energy; Nuclear fusion occurs when less massive nuclei combine into more massive nuclei,releasing tremendous amounts of energy. |
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