by APOD Robot » Wed Sep 26, 2018 4:05 am
The Sun's Spectrum with its Missing Colors
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 does indeed appear brightest in yellow-green light. The dark patches in the
above 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 1870 on a solar spectrum and only
later found here on
Earth. Today, the majority of
spectral absorption lines have been identified - but
not all.
[url=https://apod.nasa.gov/apod/ap180926.html] [img]https://apod.nasa.gov/apod/calendar/S_180926.jpg[/img] [size=150]The Sun's Spectrum with its Missing Colors[/size][/url]
[b] Explanation: [/b] It is still not known why the Sun's light is missing some colors. Here are all the [url=https://science.nasa.gov/ems/09_visiblelight]visible[/url] colors of the [url=https://solarsystem.nasa.gov/solar-system/sun/overview/]Sun[/url], produced by passing the Sun's light through a [url=http://en.wikipedia.org/wiki/Prism_%28optics%29]prism[/url]-like device. [url=http://www.noao.edu/image_gallery/html/im0600.html]The spectrum[/url] was created at the [url=http://www.noao.edu/kpno/40th/mcpierce.html]McMath-Pierce[/url] [url=https://apod.nasa.gov/apod/ap120316.html]Solar Observatory[/url] and shows, first off, that although our [url=http://solar-center.stanford.edu/SID/activities/GreenSun.html]white[/url]-appearing [url=https://apod.nasa.gov/apod/sun.html]Sun[/url] emits light of nearly [url=https://www.windows2universe.org/sun/spectrum/multispectral_sun_overview.html]every color[/url], it does indeed appear brightest in yellow-green light. The dark patches in the [url=http://www.noao.edu/image_gallery/html/im0600.html]above spectrum[/url] arise from gas at or above the [url=https://apod.nasa.gov/apod/ap160919.html]Sun's surface[/url] absorbing sunlight emitted below. Since different types of gas [url=http://astronomy.swin.edu.au/cosmos/a/absorption+line]absorb different colors of light[/url], it is possible to determine what gasses compose the Sun. [url=http://en.wikipedia.org/wiki/Helium]Helium[/url], for example, was [url=https://www.smithsonianmag.com/history/how-scientists-discovered-helium-first-alien-element-1868-180970057/]first discovered[/url] in 1870 on a solar spectrum and only [url=http://www.youtube.com/watch?v=d-XbjFn3aqE]later found[/url] here on [url=http://antwrp.gsfc.nasa.gov/apod/image/0208/earthlights02_dmsp_big.jpg]Earth[/url]. Today, the majority of [url=https://www.khanacademy.org/partner-content/nasa/measuringuniverse/spectroscopy/a/absorptionemission-lines]spectral absorption lines[/url] have been identified - but [url=http://adsabs.harvard.edu/abs/2005ASPC..336...25A]not all[/url].
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