AIR - new Flashcards
1
Q
what does the level of atmospheric pollution depend on
A
on meterolgical factors, the topography, air movement and climate
2
Q
how can we measure air pollution
A
a known volume of air is filtered through a white filter paper and measured by a photoelectric meter then you compare with the hygeinic standards
3
Q
maximal humidity
A
Amount of water vapour in the air for the particular temperature without complete saturation
4
Q
dew point
A
temperature at which air can exist saturated with water
5
Q
normal values for humidity in indoors
A
30-60%
6
Q
detection of IR
A
2 TYPES
1)photometric detection (photodiode)
2) thermal detection - bolometer
