| 21. | In 1930 comes to air radio TGW, the Voice Guatemala, first station of long wave.
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| 22. | Early commercial and professional radio services relied exclusively on long wave, low frequencies and ground-wave propagation.
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| 23. | The long wave infrared cameras used in military applications such as giving fighter pilots night vision.
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| 24. | The day capped a week-long wave of violence.
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| 25. | His work has produced a new interest in the theory of long waves in economic development.
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| 26. | The long wave transmitter was modernized and the main antenna tower received a new cage aerial.
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| 27. | In general, shorter waves have an eastward group velocity and long waves a westward group velocity.
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| 28. | Green's law also corresponds to constancy of the mean horizontal wave energy flux for long waves:
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| 29. | Had a quick google but could not find any long wave images in the public domain.
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| 30. | Models, who have long waved the goddess flag, are being held to much less rigorous standards today.
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