0 a piece of equipment used to measure how much water there is in the air -- wilgotnościomierz, higrometr
Any sort of thin sized paper should be suitable for making hygrometers.
Humidity in vials was measured daily using a hand-held digital hygrometer.
The conditions inside the cabinet were monitored digitally by means of thermometer and hygrometer which were calibrated before the study.
The relative humidity was monitored throughout the experiment using hair hygrometers and was consistently 100% (high) and 68% (low).
In the field an egg-whisk wet and dry bulb hygrometer was used, where it could be inserted.
The weighing hygrometer has one great disadvantage : it becomes misleading if it is exposed to dust.
Very few humidity records were taken, as the only available whirling hygrometer was broken by an assistant early in the period.
A calibration curve may be obtained by plotting the weights of the paper hygrometer after exposure to air of various humidities.
