debye theory v* in the text we derived the low-temperature debye heat capacity assuming that the longitudinal and transverse sound velocities are the same and also that the sound velocity is independent of the direc- tion the sound wave is propagating (a) suppose the transverse velocity is vt and the longitudinal velocity isv. how does this change the debye result? state any assumptions you make. (b) instead suppose the velocity is anisotropic. for example, suppose in the î, y and z direction, the sound velocity is vz, vy and vz respectively. how might this change the debye result?

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

ice to water 1 water to vapour 2 latent heat

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia