Rest mass1.7 octillionths kg
55.8 nonillionthsGolden retrievers
335 nonillionthsBald eagles
145 octillionthsAAA batteries
Photo from Wikimedia Commons
Proton
The positively charged heart of every atom/Scientific Objects
A proton is made of two up quarks and one down quark bound together by the strong nuclear force. It has a positive electric charge exactly equal and opposite to the electron's, and it is stable (as far as we know) with a half-life of at least 10^34 years. Every element on the periodic table is defined by how many protons its nucleus contains.
Measurements
Rest mass energy150 trillionths J
150 sextillionthsLightning bolts
150 billionthsFinger snaps
938.3 MeV
Charge radius841 quintillionths m
2.3 quintillionthsCruise ship lengths
561 quintillionthsBathtub lengths
9.2 quintillionthsAmerican football fields
0.8414 fm
Compton wavelength1.3 quadrillionths m
1.9 quadrillionthsTennis rackets
1.5 quadrillionthsUmbrellas
Compton frequency227 sextillion Hz
45.4 sextillionDog pants
19.6 octillionEarth rotations
45.4 quadrillionMedical ultrasounds