Newton rejected this idea, mainly on the ground that both men apparently could only envision light as a longitudinal wave, like sound and other mechanical waves in fluids.
32.
In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string.
33.
The sine longitudinal waves are sensed by the probe, and the deflection of the probe is detected by laser light focused on to a Position Sensitive Photo Diode ( PSPD ).
34.
For longitudinal waves such as sound waves in fluids, the direction of oscillation is by definition along the direction of travel, so the issue of polarization is not normally even mentioned.
35.
By contrast, a longitudinal wave is one in which the amplitude vector is parallel to "'k "', such as for acoustic waves in a gas or fluid.
36.
A longitudinal wave is associated with compression and decompression in the direction of travel, and is the same process in gases and liquids, with an analogous compression-type wave in solids.
37.
By acronym, " longitudinal waves " and " transverse waves " were occasionally abbreviated by some authors as " L-waves " and " T-waves " respectively for their own convenience.
38.
The work of Burridge initiated the exploration for intersonic crack growth ( when the crack tip velocity V is between the shear in wave speed C ^ 8 and the longitudinal wave speed C ^ 1.
39.
Similar laws were not developed for pipes and wind instruments at the same time since Mersenne's laws predate the conception of wind instrument pitch being dependent on longitudinal waves rather than " percussion ".
40.
Here " c " can be either the longitudinal wave velocity or the shear wave velocity, and for each resulting set of resonances the corresponding Lamb wave modes are alternately symmetrical and antisymmetric.
