- #1
johann1301
- 217
- 1
When i look up the mass of an electron, wikepedia says: 9.10938291(40)×10−31 kg
Fine, but what does the (40) stand for? Is there 40 more or total decimals, or is there uncertainty in weather the 40 belongs there or not?
or some other reason maybe??
:)
Fine, but what does the (40) stand for? Is there 40 more or total decimals, or is there uncertainty in weather the 40 belongs there or not?
or some other reason maybe??
:)