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f the normal spectrum, or the one we would measure if the gas that spectrum is produced in were at rest relative to us, is the middle one in the diagram above, then which are the red-shifted and blue-shifted spectra and what is their relative velocities with us?

f the normal spectrum, or the one we would measure if the gas that spectrum is produced in were at rest relative to us, is the middle one in the diagram above, then which are the red-shifted and blue-shifted spectra and what is their relative velocities with us?

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If the normal spectrum, or the one we would measure if the gas that spectrum is produced in were at rest relative to us, is the middle one in the diagram above, then which are the red-shifted and blue-shifted spectra and what is their relative velocities with us?
The image displays three horizontal strips representing spectral lines. Each strip features a gradient of colors from violet on the left to red on the right, depicting the visible light spectrum. ### First Strip: - Begins with a deep violet color that transitions smoothly to blue, then to green, yellow, orange, and finally red. - Distinct black vertical lines appear intermittently, breaking the continuity of the colors. ### Second Strip: - Similar to the first, it progresses from violet through blue, green, yellow, and orange to red. - The black lines in this strip appear in different positions compared to the first strip, indicating variations in absorption or emission lines. ### Third Strip: - Also follows the violet to red spectrum. - The pattern and placement of black lines here are yet again distinct, emphasizing different spectral characteristics. ### Explanation: These strips are likely depictions of absorption or emission spectra, possibly from different substances or conditions. The black lines reflect specific wavelengths where light is absorbed or emitted, characteristic of particular elements or compounds. This type of spectral analysis helps in identifying chemical compositions in various scientific fields, such as astronomy and chemistry.
Transcribed Image Text:The image displays three horizontal strips representing spectral lines. Each strip features a gradient of colors from violet on the left to red on the right, depicting the visible light spectrum. ### First Strip: - Begins with a deep violet color that transitions smoothly to blue, then to green, yellow, orange, and finally red. - Distinct black vertical lines appear intermittently, breaking the continuity of the colors. ### Second Strip: - Similar to the first, it progresses from violet through blue, green, yellow, and orange to red. - The black lines in this strip appear in different positions compared to the first strip, indicating variations in absorption or emission lines. ### Third Strip: - Also follows the violet to red spectrum. - The pattern and placement of black lines here are yet again distinct, emphasizing different spectral characteristics. ### Explanation: These strips are likely depictions of absorption or emission spectra, possibly from different substances or conditions. The black lines reflect specific wavelengths where light is absorbed or emitted, characteristic of particular elements or compounds. This type of spectral analysis helps in identifying chemical compositions in various scientific fields, such as astronomy and chemistry.
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Due to the relative motion of the object, there is a shift in the apparent frequency. If the motion is towards us, the spectra is blue-shifted and if the motion is away from us, the spectra is red-shifted.

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