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Date: 2024-01-02
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Date: 20-7-2022
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Date: 2023-12-02
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frequency (n.)
A term derived from the study of the physics of sound, and used in ACOUSTIC PHONETICS, referring to the number of occurrences of a sound wave in a unit of time (usually a second); it is measured in hertz (Hz), a term which has replaced the older ‘cycles per second’. An increase in the frequency of a sound correlates with an auditory sensation of higher PITCH.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مكتبة أمّ البنين النسويّة تصدر العدد 212 من مجلّة رياض الزهراء (عليها السلام)
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