17.05.2026
Making a simple rain gauge to measure rainfall amounts
Required: A metal container that was used as a coffee pot. Its upper opening is used to mount a conical funnel used in the household. Another opening is made on the body of the container and is adapted as a door for the possibility of placing a measuring cup in which rainwater will accumulate. If the diameter of the funnel opening is known, the area of the circle of the funnel that is the "entrance" to the rainwater can be calculated. The collected rainwater liquid can be read from the measuring cup. With a simple mathematical procedure, see an example in the photo, a calculation of accumulated rainwater was made from the last rainfall on 16.05.2026.
Како за споредба: Метеостаницата измерила 15mm т.е 15 l квадратен метар, а пресметката со импровизираниот дождомер 13,5 mm т.е 13,5 l на квадратем нетар.
For comparison: The weather station measured 15mm, i.e. 15 l per square meter, and the calculation with the improvised rain gauge was 13.5 mm, i.e. 13.5 l per square meter.
Determining the pH factor of rainwater with indicator paper
Одредување на pH фактор на дождовницата со индикаторска хартија
Determination of rainwater conductivity with a conductometer, expressed in microsiemens per centimeter(μS/cm): 429 μS/cm.