Yes, visibility can be measured by eyes. What kind of instrument can measure visibility?
These sites will help you.
http://schoolscience.rice.edu/duker/winstruments.html
http://www.weathershack.com/education/weather-measurement-tools.html
(Broken Link Removed)
research which instruments are needed to measure which feature of the weather
Temperature , Precipitation , Cloud cover , Cloud type , Wind direction , Wind speed , Visibility.
The example i have got is
visibility - eyes and instruments
Does the question mean you have to put either eyes instruments or both?
1 answer