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.)
If the interior of the building is kept at 70Â°F and 35% relative humidity, we can use the psychrometric chart to determine the dew point. On the bottom of the chart, find 70Â°F. Follow the vertical line up from 70Â°F at the base until you intersect a curved line corresponding to 35% relative humidity.