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In each case , it 's the extra half wavelength that decides when waves cancel each other out . Here 's another generalization that comes out of Schlatter 's work : Any design with an odd number of rows and an odd number of columns with an odd number of horizontal mirrors ca n't be drawn as a single loop . The administration also sees the issue as a threat to relations with Turkey , a secular democracy with a majority Muslim population and a key strategic ally . Some sona designs correspond to light-ray patterns created with the addition of horizontal mirrors between the dots . The steps today , including eliminating the phrase " testing the waters , " put Giuliani on the same level legally as McCain and Romney , the other top-tier GOP candidates who have formed regular exploratory committees and filed statements of candidacy . " Once they reach this level of morbid obesity , the vast majority go on to be obese adults , " he said . " So in the States and Australia , it never crossed my mind that I 'm a Christian and I 'm not a Muslim , but here it hits me every day . For $ 95 extra , the Madison Avenue office last year began offering acupuncture by a trained hygienist , for relaxation during dental procedures .