So we built a rough prototype of a spectrometer, and you can shine light through different substances that produce different spectrums, so that can help you identify what's in the water.
Niisiis tegime valmis lihtsa spektromeetri prototüübi. Sellega saab lasta valgust  läbi erinevate ainete, mis tekitavad erinevaid spektreid, ja sellega saab teha kindlaks, mis seal vees sees leidub.