APOD251207 太阳与其消失的颜色
太阳与其消失的颜色
图像提供: Nigel Sharp (NSF[1]), FTS[2], NSO[3], KPNO[4], AURA[5], NSF[6]
英文原文:Explanation: It is still not known why the Sun's light is missing some colors. Here are all the visible colors of the Sun , produced by passing the Sun's light through a prism -like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white -appearing Sun emits light of nearly every color , it appears brightest in yellow-green light. The dark patches in the featured spectrum arise from gas at or above the Sun's surface absorbing sunlight emitted below. Since different types of gas absorb different colors of light , it is possible to determine what gasses compose the Sun. Helium , for example, was first discovered in 1868 on a solar spectrum and only later found here on Earth . Today, the majority of spectral absorption lines have been identified - but not all . 说明: 目前仍不清楚[7]为何太阳光会缺少某些颜色。 这里展示了是太阳光所有可见光[8]的光谱[9],这些颜色是将太阳光穿过类似棱镜[10]的设备所产生。 该光谱[11]是由麦克马斯-皮尔斯McMath-Pierce[12] 太阳天文台[13]所观测取得,首先显示出,尽管我们的白色[14]外观的太阳[15]几乎发出每一种颜色[16]的光,但它在黄绿色光中最为明亮。 特征光谱[17]中的暗斑是由于太阳表面或上方的气体吸收了下方发出的阳光所造成。 由于不同类型的气体吸收不同颜色的光[18],因此可以用于确定太阳的组成气体。 例如,氦气[19]是在1868年[20]首次在太阳光谱中被发现[21],后来才在地球[22]上找到[23]。 如今,大多数光谱吸收线[24]已被识别,但仍有部分无法辨识[25]。
明日的图片: flying over Earth[26]
Authors & editors: Robert Nemiroff[27] (MTU[28]) & Jerry Bonnell[29] (UMCP[30])
NASA Official: Amber Straughn Specific rights apply[31].
NASA Web Privacy[32], Accessibility[33], Notices[34];
A service of: ASD[35] at NASA[36] / GSFC[37],
NASA Science Activation[38]
& Michigan Tech. U.[39]
太空天文实验室(成功大学物理系)
<br/> 编辑:<a href="mailto:hantzong.su@gmail.com" style="color:gray;" target="_blank">苏汉宗</a>
编辑:陈炳志[40]
[2]https://noirlab.edu/public/images/noao-02592/
[4]https://noirlab.edu/public/programs/kitt-peak-national-observatory/
[5]https://www.aura-astronomy.org/
[7]https://dogwithblog.in/wp-content/uploads/2014/08/head-tilt-flappy-ears.jpg
[8]https://science.nasa.gov/ems/09_visiblelight
[9]https://science.nasa.gov/sun/
[10]http://en.wikipedia.org/wiki/Prism_%28optics%29
[11]https://noirlab.edu/public/images/noao-sun/
[12]https://noirlab.edu/public/programs/kitt-peak-national-observatory/mcmath-pierce-solar-telescope/
[13]http://apod.nasa.gov/apod/ap120316.html
[14]http://solar-center.stanford.edu/SID/activities/GreenSun.html
[15]http://apod.nasa.gov/apod/sun.html
[16]https://www.color-meanings.com/list-of-colors-names-hex-codes/
[17]https://noirlab.edu/public/images/noao-sun/
[18]http://astronomy.swin.edu.au/cosmos/a/absorption+line
[19]http://en.wikipedia.org/wiki/Helium
[20]https://ui.adsabs.harvard.edu/abs/2021JAHH...24..629N/abstract
[22]http://www.youtube.com/watch?v=d-XbjFn3aqE
[23]http://antwrp.gsfc.nasa.gov/apod/image/0208/earthlights02_dmsp_big.jpg
[24]https://astronomy.swin.edu.au/cosmos/a/absorption+line
[25]https://ui.adsabs.harvard.edu/abs/2005ASPC..336...25A/abstract
[26]http://apod.nasa.gov/apod/ap251208.html
[27]http://www.phy.mtu.edu/faculty/Nemiroff.html
[29]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[31]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[32]https://www.nasa.gov/about/highlights/HP_Privacy.html
[33]https://www.nasa.gov/general/accessibility/
[34]https://www.nasa.gov/privacy/
[35]https://astrophysics.gsfc.nasa.gov/
[37]https://www.nasa.gov/centers/goddard/
[38]https://science.nasa.gov/learners
[40]mailto:alfred@ncku.edu.tw
http://apod.nasa.gov/apod/ap251207.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap251207.html