There are several instruments that measure wind direction. Some instruments include something similar to a wind sock or wind vane, which are known as anemometers.
The first movement of air (wind) is always from high to low pressure. This is known as the Pressure Gradient Force (PGF). However, because the Earth is rotating, the Coriolis effect causes the wind to be deflected through 90 degrees. The resulting wind is known as the Geostrophic wind, and it blows parallel to isobars.
When air is moving horizontally, that is known as wind.
The trachea is also known as the windpipe.
winds do not have definite speed or direction are known as variable wind. they keep on changing their direction
March
march
The month of February is known as "Mud Month".
August is known as the dog days month.
Anytime there is sufficient wind
August
Ifyou mean what month the book was released, it was May 1936.
Hadley cell
There is a good introductory article on wind power in Home Power magazine issue 127 (October/November 2008) titled "Wind Power Curves". The quick summary is that the theoretical limit for energy capture (the Betz limit) is 59.6% of the energy in the wind. The wind energy available depends on the wind speed. If the average wind speed is known, the available energy can be calculated assuming some standard distribution (normally Rayleigh distribution) of wind speeds. Some sample figures (based on Rayleigh wind distribution and 35% turbine efficiency): 5mph average -> 0.25 kWh/month/sq.ft 10mph average -> 2.08 kWh/month/sq.ft The power figure is per square foot of swept area (the area covered by the turbine blades when rotating), so if you have 100 sq. feet swept area then 10mph average wind speed could generate 208kWh/month.
February.
health month
Locations known to have lots of wind.