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What is the best way to determine a galaxy's redshift?
Take a spectrum of the galaxy, and measure the difference in wavelength of spectral lines from the wavelengths of those same lines as measured in the laboratory
What colors produce magenta light?
Magenta light is produced by mixing red and blue light. It is a non-spectral color, meaning it is not found in the visible spectrum of light as a single wavelength.
Spectral lines produced from the radiant energy emitted from excited atoms are thought to be due to the movements of electrons?
That’s correct. Spectral lines are produced when electrons in atoms move between energy levels. When an electron drops to a lower energy level, it emits a photon of a specific energy corresponding to a specific wavelength of light, creating spectral lines in the emitted light spectrum.
Does the velocity of a star toward or away from earth determine measuring the shift of its spectral lines?
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
How do you calculate red shift?
The spectrum of light emitted from heated hydrogen has dark lines, caused by the absorption of a very narrow wavelength band of light. These dark lines always take the same location relative to each other. If all the lines in an object's spectrum are shifted by the same amount, towards the red end of the visible spectrum, then the light is "red shifted." The amount of the shift is often described with a number 'z', where z equals the shift in wavelength divided by the wavelength as originally emitted by the object.
When the wavelength of the spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object's motion relative to Earth?
If the wavelength decreases, the spectral line moves towards the blue end of the visible light spectrum. This phenomenon is known as blue shift, indicating that the object is moving towards Earth.
When the wavelength of spectral lines emitted from an object decreases which end of the visible light spectrum does it move toward and what is the objects motion relative to earth?
When the wavelength of spectral lines emitted from an object decreases, it moves towards the violet end of the visible light spectrum. This is known as a blueshift, indicating that the object emitting the light is moving towards Earth.
When the wavelength of spectral emitted from an objectincreases which end of the visiblelight spectrum does ti move toward and what is the objects motion relative to earth?
When the wavelength of spectral light emitted from an object increases, it moves towards the red end of the visible light spectrum, also known as the redshift. This indicates that the object is moving away from Earth.
When the wavelength of a spectral line emitted from an object decreaseswhich end of the visible light spectrum does it move towardand what is the objects motion relative to earth?
When the wavelength decreases, that's known as a "blue shift", becausethe color of any visible light shifts toward the blue end of the spectrum.That phenomenon is associated with a light source that's moving TOWARDthe observer.
A spectral line that appears at a wavelength of 321 nm in the laboratory appears at a wavelength of 328 nm in the spectrum of a distant obect we say that the object's spectrum is?
A spectral line that appears at a wavelength of 321 nm in the laboratory appears at a wavelength of 328 nm in the spectrum of a distant object. We say that the object's spectrum is red shifted.
Why the distances between the lines for the hydrogen spectrum decreases with the decrease in wavelength?
The distances between lines in the hydrogen spectrum decrease with decreasing wavelength because the energy levels in hydrogen are quantized, meaning they can only exist at certain discrete values. As the wavelength decreases, the energy difference between adjacent levels also decreases, resulting in lines being closer together in the spectrum.
As the wavelength of a wave increases on the electromagnetic spectrum what happens to the energy of the wave?
As a wavelength increases in size, its frequency and energy (E) decrease.
What is a radio wave's relative wavelength and frequency compared to other waves in the Electro-Magnetic Spectrum?
Radio waves are the lowest frequency (and therefore longest wavelength) waves in the electromagnetic spectrum.
How are frequency and wavelength related for the spesific region of the spectrum?
In the electromagnetic spectrum, frequency and wavelength are inversely related. As frequency increases, wavelength decreases, and vice versa. This means that in a specific region of the spectrum, if one parameter increases, the other must decrease to maintain the constant speed of light.
What is the name of a color determined by its position in the spectrum?
The name of a color determined by its position in the spectrum is called a spectral color. These colors are typically seen in a rainbow and are produced by a single wavelength of light.
What is the second longest wavelength in the absorption spectrum of hydrogen?
The second longest wavelength in the absorption spectrum of hydrogen corresponds to the transition from the n=2 to n=4 energy levels. This transition produces a spectral line known as the H-alpha line, which falls in the red part of the visible spectrum at a wavelength of 656.3 nm.
What 2 properties of EM waves change from one end of the EM spectrum to the other?
Two properties of electromagnetic waves that change across the spectrum are wavelength and frequency. As you move from one end of the spectrum to the other, the wavelength decreases and the frequency increases.
