Best Answer: Coarse adjustment is used to focus the image on the microscope under low or medium power by using larger motions of the lens. Fine adjustment is used to focus the image on the microscope of only high power by using very tiny motions of the lens.
If you are interested in a simpler calculation that gives an approximation of dew point temperature if you know the observed temperature and relative humidity, the following formula was proposed in a 2005 article by Mark G. Lawrence in the Bulletin of the American Meteorological Society: Td = T - ((100 - RH)/5.)
This gas law formula will give you the air density for a given temperature and pressure. Absolute humidity is the density of water vapor in the air (kg/m3). To calculate absolute humidity, you must first use the dewpoint temperature and formula number (6) to calculate vapor pressure in millibars.Then convert the vapor pressure in millibars to Pa by multiplying by 100.f you want to do your own calculations or program a computer, this page contains various formulas used for calculating relative humidity, dewpoint temperature, and other quantities such as air density, absolute humidity, and the height of cumulus cloud bases, which are related to the moisture content of air.