| 11. | Stellar rotation is measured through Doppler shift or by tracking active surface features.
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| 12. | In reflection seismology, an array of seismometers image sub-surface features.
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| 13. | These photographs were extremely useful as they showed surface features in strong relief.
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| 14. | The book is hardcover with an austere black surface featuring embossed giant type.
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| 15. | EBL can create single surface features on the order of 3 5 nm.
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| 16. | Initial copies that surfaced featured press screeners later began to make the rounds.
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| 17. | Surface features are believed to have been caused by debris-covered glaciers.
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| 18. | Its surface features include large craters and high mountains.
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| 19. | 3M is not the first company seeking big bucks from replicating small surface features.
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| 20. | Its surface features include large craters and ridges.
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