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The 21-centimeter line is one of the most important wavelengths in radio astronomy. It is produced mainly in?
Wiki User
∙ 10y ago
It is produced by the flip of the electron in a 'cold' hydrogen atom from
one spin direction to the other spin direction.
The frequency that corresponds to the wavelngth of 21.1 cm is 1420.4 MHz,
so this emission is monitored and measured with high-frequency radio / low-
frequency 'microwave' hardware.
Wiki User
∙ 10y ago
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What electromagnetic waves are produced by stars and galaxies?
Since all such emissions are "black body radiation" (or pretty close), the correct answer is "light". All wavelengths... from the longest radio waves, to very energetic gamma radiation.
What relationship do you see between a star's color and its temperature?
The visible spectrum, as it goes from red to blue, refects higher energies and shorter wavelengths, that are produced by progressively higher temperatures. So, bluish stars are hotter than reddish stars.
Can Light Be Produced Without Heat?
Light and heat are the same stuff; electromagnetic energy. The difference is in the wavelength of the energy; heat has longer wavelengths than light. (It's all one broad spectrum from radio to heat to light to x-rays to gamma rays to cosmic rays; all electromagnetic energy.
Where is the sun's energy produced?
The Sun's energy is produced in the Sun's core.
When different isotopes of hydrogen fuse in the sun nuclei of what are produced?
Helium is produced
What color light is produced if all wavelengths are absorbed?
That would be black.
The bright-line spectrum produced by the excited atoms of an element contains wavelengths that are?
in the visible light range
Why is Astronomy inportant?
Well, there are really 2 types of astronomy; hobbyists who like to look at stuff in space from their back yards or observing sites and academic astronomers who study space. Recreational astronomy is important because it is fun and many asteroids and comets have been discovered that way. Academic astronomy has produced many great discoveries in physics which have helped improve technology, as well as it's often nice to explore beyond out planet for new things and get away from all our futile earthly problems.
How was the light bulb important?
It produced electricity It produced electricity
What is one molecule produced by the mitochondria and why is it important to the mitochondria?
the molecule that is produced is atp
Plants are exposed to red blue and yellow wavelengths of light and the amount of oxygen produced during photosynthesis What can you sugest for a control group?
Plants exposed to white light?
Which two types of energy is produce when a light is turn on?
Only one type is produced: Electromagnetic radiation, distributed through the bands of wavelengths that we call light and heat.
What is vibrational spectoscopy?
Vibrational spectroscopy (in Chemistry) refers to a set of popular analytical techniques (i.e. Infrared and Raman spectroscopy) used to determine the identity and purity of chemicals in a sample. Basically, a specific range of wavelengths of light is shined at the compound, the bonds between atoms in the compound absorb the light at different wavelengths (and vibrate), and based on the identity of the compound a unique spectrum (graph showing which wavelengths were absorbed and how strongly) is produced.
What type of molecule produced at the rough endoplasmic reticulum?
Several types of molecules are produced. Important product is proteins produced by ribosomes on it
What is an important blood buffer produced from carbon dioxide?
I need to know the important blood buffer produced from carbon dioxide.
How important is silver to Arizona?
It is important historically and is still produced as a by-product of Copper production.
Why was pampas important?
It produced many products, such as beef.
