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H-alpha image of the Sun's chromosphere
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图注： This false-color image was captured with a 10-cm telescope at the Big Bear Solar Observatory (BBSO) in the United States in July 2002. It depicts the full disk of the Sun using the H-alpha emission line of hydrogen. When observed in this spectral line, the Sun's chromosphere appears particularly prominent due to hydrogen atoms emitting light at the specific wavelength. This emission produces a distinctive red color, making features such as spicules (jets of plasma that look hair-like) and plage (bright patches in the chromosphere) highly visible. Several small solar prominences can be seen protruding from the edge of the solar disk. When prominences (also known as filaments) cross the face of the disk they appear as dark threads caused by the cooler material in the prominence absorbing light. The chromosphere is also visible in the violet part of the solar spectrum due to ionized calcium showing emissions in these wavelengths.
来源： Big Bear Solar Observatory (BBSO)/New Jersey Institut of Technology (NJIT)
来源链接
词汇表:
色球 , 日珥 , 太阳 , 光谱线
分类：
太阳
授权许可： 公共领域 公共领域 图标
文件
( 图像
2.82 MB)
Measure the Solar Diameter astroEDU 教育活动（链接至 astroEDU 网站） 描述: Hands-on activity to measure the Sun by using household materials.
词汇表:
轨道 , 太阳
标签：
Hands-on
, Measurement
, Observing
, Scales
年龄段：
12-14
, 14-16
, 16-19
, 19+
受教育等级:
初中
学习领域：
结构化探究式学习
费用:
低成本
组别大小：
小组
技能：
传达信息
, 构建解释
, 使用数学和计算思维
作者： Edward Gomez
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
