Ukuguqulwa okukhanyayo kwefilimu ye-POisifinyezo:
Ngokusebenzisa ifilimu ye-PO yokuguqulwa kokukhanya, izitshalo zingathola ukukhanya okwengeziwe okuwusizo kwe-infrared, okungasizi nje ukukhula kwezitshalo nokwandisa izinga lokushisa ku-greenhouse.