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from article Musical acoustics
Students in the Curtis Symphony Orchestra playing a range of string and wind instruments. (Credit: Allentownpa.gov/Curtis Institute of Music)
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from article Musical acoustics
Holographic interferograms of a snare drum. (a) 874 Hz. (b) 1064 Hz. (c) 1176 Hz. (d) 1271 Hz. (e) 1408 Hz. (f) 1670 Hz.
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from article Musical acoustics
Combination tones due to two tones of varying separation shown on a musical staff. As the difference tone rises, the cubic difference tone falls, so that they cross at f2 = 3/2 f1 (a perfect fifth).
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from article Optical coherence tomography
Typical optical coherence tomography system, based on a broadband source and fiber-optic Michelson interferometer.
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from article Optical coherence tomography
Optical coherence tomography images of healthy hamster skin in vivo. (a) Conventional magnitude image. Various layers of skin can be seen in cross section. (b) Result after Doppler processing of the same signal used to create the magnitude image.…
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from article Sphaeractinoidea
Sphaeractinoid Actinostromaria rhodaclada, Cretaceous, Jura Mountains: (a) tangential and (b) longitudinal section, ×6. (From A. Steiner, 1932)
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from article Cable television system
Cable television systems with (a) coaxial feeder cables and (b) optical-fiber feeder cables.
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from article Arthropoda
The insects are the largest group within the phylum Arthropoda. Some of the most visually appealing insects are the butterflies (order Lepidoptera). (Credit: Shutterstock)
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from article Arthropoda
Crustaceans constitute some of the most notable arthropods. The Chesapeake blue crab (Callinectes sapidus) is native to the western Atlantic Ocean and Gulf of Mexico. (Credit: Sandy Franz/Getty Images)
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from article Arthropoda
Body segmentation is a fundamental characteristic of the arthropods. The Madagascan fire millipede (Aphistogoniulus corallipes) has numerous leg-bearing segments. (Copyright © McGraw-Hill Education)
