An element of the squad's success has been the consistent ability to identify, locate, and secure valuable testimony from previously unknown or hostile witnesses. The cold case concept A source book should be developed on hostile witnesses as well.
Polarization (also polarisation) is a property of waves that can oscillate with more than one orientation. Electromagnetic waves such as light exhibit polarization, as do some other types of wave, such as gravitational waves.Sound waves in a gas or liquid do not exhibit polarization, since the oscillation is always in the direction the wave travels.n this case, the transverse polarization is associated with the direction of the shear stress and displacement in directions perpendicular to the propagation direction, while the longitudinal polarization describes compression of the solid and vibration along the direction of propagation.
Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium.There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves.The animations below demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.echanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium.