Convert pica (em) to bohr
Selected category: length.
Definition and details for pica (em):
Typographers and printers use pica (pi or pc) unit of length. One pica is approximately 4.22 mm.
Definition and details for bohr:
Bohr or bohr radius (a0) is used in particle physics. One bohr is the mean distance between the proton and the electron in an unexcited hydrogen atom. This unit was named to honor the Danish physicist Niels Bohr (1885-1962), who explained the structure of atoms.