Question

What does it means to say a physical quantity is quantized.The quantum of charge is elementry charge,is there any quantum of mass found?

Answer 1

Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge. Thus, an object's charge can be exactly 0 e, or exactly 1 e, −1 e, 2 e, etc., but not, say, 12 e, or −3.8 e, etc.