The aim of wound bed preparation is to create an optimal wound-healing environment by producing a well vascularised, stable wound bed with minimal exudate. Bacterial load has a direct impact on wound healing. The management of the bacterial load by either local or systemic therapy is important in wound management.
Refraction of Sound Waves. Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves. So if the media (or its properties) are changed, the speed of the wave is changed.
So there you have it sound does travel faster in warm air BUT it may appear to travel farther in cold air. This is how that worksâ¦. â¦if the air close to the ground is colder than the air above it then sound waves travelling upwards will be bent downwards. This is called Refraction.