Konke kuqala ngenzwa. Ngokungafani ne-thermometer egcwele uketshezi kanye ne-bi-metal thermometer, ithemometha yedijithali idinga inzwa.
Lezi zinzwa zonke zikhiqiza i-voltage, i-current, noma inguquko yokumelana lapho kuba nokushintsha kwezinga lokushisa. Lawa amasignali 'analogi' ngokuphambene namasignali edijithali.Angasetshenziswa ukuthatha ukufundwa kwezinga lokushisa emlonyeni, kwi-rectum, noma emakhwapheni.
Amathemometha e-elekthronikhi asebenza ngendlela ehluke ngokuphelele kweyemishini esebenzisa imigqa yemercury noma izikhombi zokuphotha. Zisekelwe embonweni wokuthi ukumelana kocezu lwensimbi (indlela ugesi ogeleza kalula ngayo) kuyashintsha njengoba izinga lokushisa lishintsha. Njengoba izinsimbi ziya zishisa, ama-athomu adlidliza kakhulu ngaphakathi kuzo, kuba nzima ukuba ugesi ugeleze, futhi ukumelana kuyanda. Ngokufanayo, njengoba izinsimbi ziphola, ama-electron ahamba ngokukhululeka futhi ukumelana kwehla.
Okungezansi ukunemba okuphezulu kwethemometha yethu ethandwayo yereferensi yakho:
