What does it mean to be 'quantized'? My teacher often says about Quantum Physics. I just don't get what that means. My teacher explained that quantized means everything can be or can not be (I didn't listen carefully) cut indefinitely. If everything can be cut indefinitely, then how about electron? It can not be cut since scientists haven't found what electron is made of, so please explain to me what quantized really means in a easy and understandable way. thanks a lot.