| 21. | Where can learn more about the spectral lines of substances?
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| 22. | His measurements concerning intensities of spectral lines brought Physical Laboratory in the international limelight.
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| 23. | These peaks and troughs are spectral lines and they indicate the presence of different elements.
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| 24. | The system shows variable brightness and spectral line profiles.
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| 25. | Mechanisms other than atom-photon interaction can produce spectral lines.
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| 26. | Spectral lines are the result of interaction between a orbitals ), the photon is absorbed.
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| 27. | Hendrik Kramers had earlier calculated the relative intensities of spectral lines in the large orbits.
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| 28. | This gas both widens the spectral line and increases the transmission rate of the filter.
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| 29. | Spectral line will talk a bit about discrete spectrum.
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| 30. | The witch of Agnesi approximates the spectral energy distribution of spectral lines, particularly X-ray lines.
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