Vapor Pressure. The Macroscopic View. The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container.
Transverse and longitudinal are two different types of waves. The main difference between transverse and longitudinal waves is that in transverse waves, oscillations occur perpendicular to the direction of propagation of the wave, whereas in longitudinal waves, oscillations occur parallel to the direction of propagation of the wave.
Transverse and compressional (longitudinal) waves are similar because have a frequency (and therefore a period), and a wavelength. that can be calculated. Waves come in either two major categories: electromagnetic or mechanical. Electromagnetic waves are light waves. They are energized particles that travel very quickly. They do not need a medium to travel, which means that they can travel through outer space where there is no matter. Mechanical waves are waves that require a medium (matter) to travel. These waves are considered to have two major shapes: transverse and compressional. For waves we can peform calculations using two equations: Frequency is the inverse of the time it takes for one cycle of the wave to occur.