Density is the measure of how many atoms are in a given space of a material. Basically, itâs how closely packed the atoms are in a material. To measure a materialâs density, you need to know how many atoms are in the material (the mass), and how much space it takes (volume).
Freebase(0.00 / 0 votes)Rate this definition: Wind rose. A wind rose is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location. Historically, wind roses were predecessors of the compass rose, as there was no differentiation between a cardinal direction and the wind which blew from such a direction.
What is Wind Direction ? Wind direction is the direction from which the wind is blowing; the direction from which the air is moving. It is not the direction the wind is blowing toward. Wind direction is measured with reference to 360 degrees on the compass (true North), and expressed to the nearest degree, going in a clockwise direction, or to any one of the 16 points on a compass (N, S, SE, WSE, etc...).