## amplitudes

Noun

- plural form of
*amplitude*

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- The number (i) expressing the ratio of the two
**amplitudes**is a function of the following quantities: - (T) the volume of the disturbing particle; (r) the distance of the point under consideration from it; (A) the wave-length; (b) the velocity of propagation of light; (D) and (D') the original and altered densities: of which the first three depend only upon space, the fourth on space and time, while the fifth and sixth introduce the consideration of mass. - If this be overlooked, a wrong impression may be derived as to the absolute
**amplitudes**of the changes. - Are the
**amplitudes**of the component harmonic waves of periods 24, 12, 8 and 6 hours; al, a2, a 3, a 4, are the corresponding phase angles. - The third line gives the range of the regular diurnal inequality, the next four lines the
**amplitudes**of the first four Fourier waves into which the regular diurnal inequality has been analysed. - These mean values, ranges and
**amplitudes**are all measured in volts per metre (in the open).

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