The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 79
nose and nasal passages . Smaller particles are caught by the trachea ; the smallest particles and chemical molecules are removed by the bronchial walls and wandering scavenger cells ( phagocytes ) . Most of the conditioning of air is ...
nose and nasal passages . Smaller particles are caught by the trachea ; the smallest particles and chemical molecules are removed by the bronchial walls and wandering scavenger cells ( phagocytes ) . Most of the conditioning of air is ...
Page 581
... particles are displaced , a proportional force acts on the particles to restore them to their original position . If a material has the property of elasticity and the particles in a cer- tain region are set in vibratory motion , an ...
... particles are displaced , a proportional force acts on the particles to restore them to their original position . If a material has the property of elasticity and the particles in a cer- tain region are set in vibratory motion , an ...
Page 583
... particles in the same phase - i.e . , points that have completed identical fractions of their periodic motion . Usually , in transverse waves ( see wave , transverse ) , wavelength is measured from crest to crest or trough to trough ...
... particles in the same phase - i.e . , points that have completed identical fractions of their periodic motion . Usually , in transverse waves ( see wave , transverse ) , wavelength is measured from crest to crest or trough to trough ...
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