#psychrometer

Margaret Ingels

(1892–1971) Mechanical engineer

In 1920, Margaret Ingels became the first woman to earn a professional degree as a Mechanical Engineer. She worked for most of her career at Carrier-Lyle—the heating and air conditioning giant. Working in their labs, she helped develop the Anderson-Armspach dust determinator, which became the industry standard for air filtration, and she invented the sling psychrometer, which measures air humidity and is still widely used today.

The Difference Between a Psychrometer and a Hygrometer

[ad_1] This is something that confuses a lot of people and leaves them unsure of which to get when they are looking to buy one. In reality there is no difference between them, a psychrometer is actually a type of hygrometer. A hygrometer is a device that is used to measure the moisture content of the air, basically this means the relative humidity and the dew point. There are several different…

Meteorologists always carry sling psychrometers not just to measure the wet-bulb temperature, but to whack the ding-dongs who ask these silly questions. This isn't to say that we don't like meteors though...