title: Mechanical resonance spectra in human cancellous bone.
abstract: The dynamic mechanical response of fresh human cancellous bone at low audio frequencies contains two resonance spectra. The spectral frequencies in each series have the ratios 1:4:9:16 ... n(2). The frequencies are in quantitative agreement with the concept of momentum wave modes of calcium and phosphorus atoms in the lamellae, with no variable parameters.
mesh_terms: D000328:Adult; D001842:Bone and Bones; D002118:Calcium; D004548:Elasticity; D005269:Femur; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D010758:Phosphorus; D013314:Stress, Mechanical; D014159:Transducers; D014783:Viscosity
chemical_list: D010758:Phosphorus; D002118:Calcium