A sling psychrometer (which is a hygrometer) measures the moisture content of the atmosphere surrounding it. It is called a sling psychrometer because it is whirled around in the air until a constant value/reading is obtained from the wet-bulb thermometer.
A sling (for throwing stones).
The Richter Scale is used to determine the earthquake density. The scale is measured from low as 1 to high as 10.
sling
Richter
Mass
when was the sing psychrometer invente
At Hardwere Stores:)
4
It measures humidity
Leonardo da vici (the artist) built the first crude hygrometer in the 1400s and francesco folli invented a more practical hygrometer Leonardo da vinci
Relative humidity
A
There are a lot of places to buy a sling psychrometer. Any company which sells scientific equipment should have them, or one could buy it from Amazon or Bacharach.
it has changed a lot
One of the better ways would be to use a sling psychrometer.
There are two types - the wet-bulb sling psychrometer and the dry-bulb psychrometer. Look up the definitions of these instruments for more details.
psychrometera hygrometer would be useful!