Constants
Topics:
Values
Energy
Equivalents
Searchable
Bibliography
Background
Constants
Bibliography
Constants,
Units &
Uncertainty
home page
Correlation coefficient between two constants
proton rms charge radius
Numerical value
8.414 x 10
-16
m
Standard uncertainty
0.019 x 10
-16
m
Relative standard uncertainty
2.2 x 10
-3
Concise form
8.414(19) x 10
-16
m
Source: 2018 CODATA
recommended values
Definition of
uncertainty
Correlation coefficient with
any other constant
 
Select the
second
constant in the pair
(e.g,
electron mass
, misspellings okay)
Search
by name
Or
browse the complete constants list
Click
here
to re-select the
first
constant