0
In a spectral line from a rotating body such as a star, some of the matter emitting the line is moving toward you and has a part of its line shifted slightly to the bluer end of the spectrum, some is moving away and has a slight shift toward the red end, and the rest is moving more or less across your line of sight and the shift is normal.
The thickness of spectral lines is determined by the broadening mechanisms affecting the atoms or molecules emitting the light. Natural broadening occurs due to the inherent uncertainty in energy levels according to the Heisenberg Uncertainty Principle. Doppler broadening arises from variations in velocities of atoms or molecules. Pressure broadening is caused by collisions with other particles, which can also affect the line width.
A spectrum with lines it it is made by the heating of one or more elements or molecules. The brighter lines are produced by those elements or molecules that are more abundant in the mixture.
Add your answer:
Earn +20 pts
How might the difference in the brightness of spectral lines be explained?
The brightness of spectral lines can be explained by the number of atoms emitting photons in a particular energy level transition. Stronger lines indicate more atoms in that transition state, while weaker lines indicate fewer atoms. Additionally, factors like temperature, pressure, and density of the emitting source can also affect the brightness of spectral lines.
Suppose you want to know the chemical composition of a distant star Which piece of information is most useful to you?
The star's absorption spectrum would be most useful in determining its chemical composition. By studying the specific wavelengths of light that are absorbed by elements in the star's atmosphere, scientists can identify the presence of different elements and molecules.
Why does hydrogen atom contain many lines?
The hydrogen atom contains many spectral lines because it can undergo different energy state transitions, leading to the emission or absorption of light at specific wavelengths. These transitions occur when an electron moves between quantized energy levels, resulting in the emission of photons at specific frequencies. Each transition corresponds to a different spectral line in the electromagnetic spectrum.
What is it called when you give to others some of what you have?
Sharing.
Are some metals more malleable than others?
Yes, some metals are more malleable than others. Malleability is the property of a material to be shaped and deformed under compression without breaking. Metals such as gold and aluminum are highly malleable, while others like cast iron are less malleable.
Does Every element and compound in nature have a unique set of spectral lines?
Elements have several spectral lines and although some lines may be the same between different elements most lines are not and the whole spectrum for each element is indeed unique.
Why are some contours thicker than others?
Contour lines represent elevation on a topographic map. Thicker contour lines are known as index contours and typically represent a significant change in elevation, such as a peak or ridge. They help the reader quickly identify major landforms on the map.
What are the dark lines in a stellar spectrum are called?
Fraunhofer realised that some of these dark lines were at the same position in effect called the Zeeman effect can also cause splitting of the spectral lines.
How might the difference in the brightness of spectral lines be explained?
The brightness of spectral lines can be explained by the number of atoms emitting photons in a particular energy level transition. Stronger lines indicate more atoms in that transition state, while weaker lines indicate fewer atoms. Additionally, factors like temperature, pressure, and density of the emitting source can also affect the brightness of spectral lines.
Why do people have monobrows?
Some people just have eyebrows that tend to grow more thickly in the center than others do, just as some have thicker hair on their head than others do.
How can I see an line spectrum from a cloud of gas?
If there is a star shining through the gas then some of the starlight will be absorbed by the gas to deliver spectral lines of the "stuff" making up the gas.
Why are some power cords thicker than others?
It has to do with current requirements of whatever you plug into it. Things that heat up require a thicker cord to transport the current. A thinner cord may overheat.
Is a hoop earring thicker than a lip ring?
It depends how large it is, some of them are and others aren't Hoped I helped.<3
What are some star characteristics that can be identified by spectral analysis?
Some star characteristics that can be identified by spectral analysis include temperature, composition, mass, luminosity, and age. By analyzing the lines present in a star's spectrum, astronomers can determine these key properties and gain insights into the star's physical characteristics and evolutionary stage.
How thick were castle walls?
Some were thicker than others. It also depended on how protected you want your castle to be. Also if you had enough money.
Why do some fiber work better than others to keep you warm?
Some fibers work better than other to keep you warm because they are thicker.
Are some pennies thicker than others?
Yes, some pennies may be thicker due to variations in the manufacturing process. Over time, the composition of pennies may also change, affecting their thickness.
