Dalton ○◂｜appendage｜___｜20260628155835-01-•

dalton (unified atomic mass unit)	…
Unit of	mass
Symbol	Da, u
Named after	John Dalton
Equal to	• 1.660 539 068 92 (52) × 10 ${}^{-27}$ kg • 1 m ${}_u$ • 931.494 103 72 (29) MeV/ c ${}^2$

(echo:: @ ᯤ)