No muslin over other thermometer. The difference in temperature is a function of difference in humidity. D. Wind Wind acts to mix the atmosphere. It transports components such as dust, chemicals moisture etc, from one place to another thereby redistributing concentratins. Wind vanes tell us direction 2.
Anemometers exist for measurement of wind speed.
The cup anemometer is the most widely used. Gustiness and Diurnal Wind Variations are the normal pattern of winds Speed varies much more horizontally than it does vertically. Usually the horizonatall speed is 10X more variable than the vertical speed.