Wednesday, 30 January 2013

All the colors of sunlight

Although the Sun appears to us that the "yellow" when viewed with the naked eye, it actually emits light in all colors, and that scientists can "see" through special telescopes that are able to observe wavelengths beyond the visible range.

"The data in multiple colors," reveals a variety of strange things about our sun, which is constantly changing and tells how scientists solar material moves through the solar atmosphere.

There are two ways in which solar telescopes are able to gather the information about the light emitted by the sun. One is through the spectrometer that can simultaneously observe different wavelengths of light and generate graphs that give an integrated picture of the range of temperature of various substances in the sun.

In the meantime, other instruments can take photos and the Sun "to observe" light in a range that is not visible to the human eye. For example. AIA instrument at NASA's powerful dynamic Solar Observatory (Solar Dynamics Observatorsy - SDO) can look at the world in 10 different wavelengths - and each has chosen to highlight a particular part of the solar atmosphere.

This is a list of what can be "seen" by the SDO, in angstroms (1 angstrom = 0.1 nm):

4500: The sun's surface or photosphere
1700: The sun's surface or chromosphere
1600: The combination of the upper photosphere and the transition region, which is between the chromosphere and the upper layers of the solar atmosphere - the corona
304: The light from the chromosphere and transition areas
171: Corona when the calm, and the magnetic arches
193: "warmer" part of the corona
211: More warm and active magnetic parts corona
335: warmer and more active parts of the coronal magnetic
94: Corona during a "solar flare"
131: The hottest materials in flares



anis khan said...

very nice post. i got some important information from it.

Youless said...

How interesting it is! I have never known that the sunlight can be so colorful!

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